Navy Nuclear-Powered Surface Ships: Background, Issues, and Options for Congress

Navy Nuclear-Powered Surface Ships:
Background, Issues, and Options for Congress
Updated October 3, 2008
Ronald O’Rourke
Specialist in Naval Affairs
Foreign Affairs, Defense, and Trade Division



Navy Nuclear-Powered Surface Ships:
Background, Issues, and Options for Congress
Summary
Some Members of Congress, particularly on the House Armed Services
Committee, have expressed interest in expanding the use of nuclear power to a wider
array of Navy surface ships, including the Navy’s planned CG(X) cruiser. Section
1012 of the FY2008 Defense Authorization Act (H.R. 4986/P.L. 110-181 of January

28, 2008) makes it U.S. policy to construct the major combatant ships of the Navy,


including the CG(X), with integrated nuclear power systems, unless the Secretary of
Defense submits a notification to Congress that the inclusion of an integrated nuclear
power system in a given class of ship is not in the national interest. The Navy has
studied nuclear power as a design option for the CG(X), but has not yet announced
whether it would prefer to build the CG(X) as a nuclear-powered ship.
A 2006 Navy study concluded the following, among other things:
!In constant FY2007 dollars, building a Navy surface combatant or
amphibious ship with nuclear power rather than conventional power
would add roughly $600 million to $800 million to its procurement
cost.
!The total life-cycle cost of a nuclear-powered medium-size surface
combatant would equal that of a conventionally powered medium-
size surface combatant if the cost of crude oil averages $70 per
barrel to $225 per barrel over the life of the ship.
!Nuclear-power should be considered for near-term applications for
medium-size surface combatants.
!Compared to conventionally powered ships, nuclear-powered ships
have advantages in terms of both time needed to surge to a distant
theater of operation for a contingency, and in terms of operational
presence (time on station) in the theater of operation.
In assessing whether the CG(X) or other future Navy surface ships should be
nuclear-powered, Congress may consider a number of issues, including cost,
operational effectiveness, ship construction, ship maintenance and repair, crew
training, ports calls and forward homeporting, and environmental impact.
This report will be updated as events warrant.



Contents
Introduction and Issue for Congress...................................1
Background ......................................................1
Nuclear and Conventional Power for Ships..........................1
Nuclear and Conventional Power in Brief.......................1
Nuclear Power for a Surface Combatant........................2
U.S. Navy Nuclear-Powered Ships................................3
Naval Nuclear Propulsion Program............................3
Current Navy Nuclear-Powered Ships..........................4
Earlier Navy Nuclear-Powered Cruisers........................4
Initial Fuel Core Included in Procurement Cost..................5
CG(X) Cruiser Program.........................................5
The Program in General.....................................5
Reactor Plant for a Nuclear-Powered CG(X)....................6
Construction Shipyards.........................................7
Nuclear-Capable Shipyards..................................7
Surface Combatant Shipyards................................7
Recent Navy Studies for Congress.................................8
2005 Naval Reactors Quick Look Analysis......................8
2006 Navy Alternative Propulsion Study.......................9
Potential Issues for Congress........................................10
Cost .......................................................10
Development and Design Cost...............................10
Procurement Cost.........................................11
Total Life-Cycle Cost......................................12
Operational Effectiveness......................................13
Operational Value of Increased Ship Mobility..................13
Potential Other Operational Advantages of Nuclear Power........13
Ship Construction............................................14
Shipyards ...............................................14
Nuclear-Propulsion Component Manufacturers.................17
Ship Maintenance and Repair...................................17
Crew Training...............................................17
Port Calls and Forward Homeporting.............................18
Environmental Impact.........................................18
Potential Options for Congress......................................19
Legislative Activity for FY2009.....................................19
FY2009 Defense Authorization Bill (H.R. 5658/S. 3001)..............19
House ..................................................19
Senate ..................................................20
Compromise .............................................21
FY2009 Defense Appropriations Act (H.R. 2638/P.L. 110-329)........22
House ..................................................22
Senate ..................................................22



Legislative Activity for FY2008.....................................22
FY2008 Defense Authorization Act (H.R. 4986/P.L. 110-181).........22
House ..................................................22
Senate ..................................................24
Conference ..............................................24
Appendix. Section 130 of P.L. 109-163...............................28
List of Tables
Table 1. Unrefueled Cruising Ranges and Transit Distances................3
Table 2. Earlier Navy Nuclear-Powered Cruisers.........................5



Navy Nuclear-Powered Surface Ships:
Background, Issues, and
Options for Congress
Introduction and Issue for Congress
Some Members of Congress, particularly on the House Armed Services
Committee, have expressed interest in expanding the use of nuclear power to a wider
array of Navy surface ships, starting with the Navy’s planned CG(X) cruiser. Section
1012 of the FY2008 Defense Authorization Act (H.R. 4986/P.L. 110-181 of January

28, 2008) makes it U.S. policy to construct the major combatant ships of the Navy,


including the CG(X), with integrated nuclear power systems, unless the Secretary of
Defense submits a notification to Congress that the inclusion of an integrated nuclear
power system in a given class of ship is not in the national interest. The Navy has
studied nuclear power as a design option for the CG(X), but has not yet announced
whether it would prefer to build the CG(X) as a nuclear-powered ship.
The issue for Congress is whether the CG(X) or other future Navy surface ships
should be nuclear-powered. Congress’s decisions on this issue could affect, among
other things, future Navy capabilities, Navy funding requirements, and the
shipbuilding industrial base.
Background
Nuclear and Conventional Power for Ships
Nuclear and Conventional Power in Brief. Most military ships and large
commercial ships are conventionally powered, meaning that they burn a petroleum-based
fuel, such as marine diesel, to generate power for propulsion and for operating shipboard
equipment. Conventionally powered ships are sometimes called fossil fuel ships.



Some military ships are nuclear-powered, meaning that they use an on-board
nuclear reactor to generate power for propulsion and shipboard equipment.1 Nuclear-
powered military ships are operated today by the United States, the United Kingdom,
France, Russia, and China. Some other countries, such as India, have expressed
interest in, or conducted research and development work on, nuclear-powered
military ships. A military ship’s use of nuclear power is not an indication of whether
it carries nuclear weapons — a nuclear-powered military ship can lack nuclear
weapons, and a conventionally powered military ship can be armed with nuclear
weapons.
Nuclear Power for a Surface Combatant. For a surface combatant like
a cruiser, using nuclear power rather than conventional power eliminates the need for
the ship to periodically refuel during extended operations at sea. Refueling a ship
during a long-distance transit can reduce its average transit speed. Refueling a ship
that is located in a theater of operations can temporarily reduce its ability to perform
its missions. A nuclear-powered surface combatant can steam at sustained high
speeds to a distant theater of operations, commence operations in the theater
immediately upon arrival, and continue operating in the theater over time, all without2
a need for refueling.
In contrast, a conventionally powered surface combatant might need to slow
down for at-sea refueling at least once during a high-speed, long-distance transit;
might need to refuel again upon arriving at the theater of operations; and might need
to refuel periodically while in the theater of operations, particularly if the ship’s
operations in theater require frequent or continuous movement. Table 1 shows the
unrefueled cruising ranges of the Navy’s existing conventionally powered cruisers
and destroyers at a speed of 20 knots, along with transit distances from major U.S.
Navy home ports to potential U.S. Navy operating areas. Navy surface combatants
have maximum sustained speeds of more than 30 knots. A speed of 20 knots is a
moderately fast long-distance transit speed for a Navy surface combatant. For a


1 U.S. Navy nuclear-powered ships use pressurized water reactors (PWRs) that are fueled
with highly enriched uranium. In a PWR, water flowing through the reactor is heated by the
nuclear fuel to a high temperature. The water is pressurized (maintained at a high pressure)
so that it does not boil as it heats up. A heat exchanger is then used to transfer heat from the
radioactive pressurized water to a separate circuit of non-radioactive water. As the
non-radioactive water heats up, it turns into steam that is used to power turbines that drive
the ship’s propellers and generate power for shipboard equipment.
A small number of non-military ships have been built with nuclear power in recent decades,
including the U.S.-built commercial cargo ship NS Savannah, three other commercial cargo
ships built in Germany, Japan, and the Soviet Union, and several Soviet/Russian-built
nuclear-powered icebreakers. The four cargo ships are no longer in service. More recently,
the Center for the Commercial Deployment of Transportation Technologies (CCDoTT) of
California State University, Long Beach, has examined the potential cost-effectiveness of
building a new generation of nuclear-powered commercial cargo ships.
2 For an aircraft carrier, the use of nuclear power permits space inside the ship that would
have been used for storing ship fuel to be used instead for storing aircraft fuel or other
supplies. This lengthens the period of time that a carrier can sustain aircraft operations
before needing to take on fuel or other supplies.

higher transit speed, such as 25 knots, the unrefueled cruising ranges would be less
than those shown in the table, because the amount of fuel needed to travel a certain
distance rises with ship speed, particularly as speeds increase above about 15 knots.
Table 1. Unrefueled Cruising Ranges and Transit Distances
(in nautical miles)
Unrefueled cruising ranges at 20 knots
Arleigh Burke (DDG-51) class destroyer4,400 nm
Ticonderoga (CG-47) class cruiser6,000 nm
Transit distances
Pearl Harbor, HI, to area east of Taiwana, b4,283 nm
San Diego, CA, to area east of Taiwana, c5,933 nm
Pearl Harbor, HI, to Persian Gulf (via Singapore)~9,500 nm
San Diego, CA, to Persian Gulf (via Singapore)c~11,300 nm
Norfolk to Persian Gulf (via Suez canal)~8,300 nm
Sources: For ship unrefueled cruising ranges: Norman Polmar, The Naval Institute Guide to the Shipsth
and Aircraft of the U.S. Fleet, 18 ed., Annapolis (MD), 2005. For transit distances to area east of
Taiwan: Straight line distances calculated by the “how far is it” calculator, available at
[http://www.indo.com/distance/]. (Actual transit distances may be greater due to the possible need for
ships to depart from a straight-line course so as to avoid land barriers, remain within port-area
shipping channels, etc.) For transit distances to Persian Gulf: Defense Mapping Agency, Distancesth
Between Ports (Pub. 151), 7 ed., 1993, with distances shown for reaching a position roughly in the
center of the Persian Gulf.oo
a. Area east of Taiwan defined as a position in the sea at 24N, 124E, which is roughly 130 nautical
miles east of Taiwan.
b. Distance from Pearl Harbor calculated from Honolulu, which is about 6 nautical miles southeast
of Pearl Harbor.
c. For transit distances from the Navy home port at Everett, WA, north of Seattle, rather than from
San Diego, subtract about 700 nm.
During extended operations at sea, a nuclear-powered surface combatant, like
a conventionally powered one, might need to be resupplied with food, weapons (if
sufficient numbers are expended in combat), and other supplies. These resupply
operations can temporarily reduce the ship’s ability to perform its missions.
U.S. Navy Nuclear-Powered Ships
Naval Nuclear Propulsion Program. The Navy’s nuclear propulsion
program began in 1948. The Navy’s first nuclear-powered ship, the submarine
Nautilus (SSN-571), was commissioned into service on September 30, 1954, and
went to sea for the first time on January 17, 1955. The Navy’s first nuclear-powered
surface ships, the cruiser Long Beach (CGN-9) and the aircraft carrier Enterprise
(CVN-65), were commissioned into service on September 9, 1961, and November

25, 1961, respectively.


The Navy’s nuclear propulsion program is overseen and directed by an office
called Naval Reactors (NR), which exists simultaneously as a part of both the Navy
(where it forms a part of the Naval Sea Systems Command) and the Department of
Energy (where it forms a part of the National Nuclear Security Administration). NR



has broad, cradle-to-grave responsibility for the Navy’s nuclear-propulsion program.
This responsibility is set forth in Executive Order 12344 of February 1, 1982, the text
of which was effectively incorporated into the U.S. Code (at 50 USC 2511)3 by
Section 1634 of the FY1985 defense authorization act (H.R. 5167/P.L. 98-525 of
October 19, 1984) and again by section 3216 of the FY2000 defense authorization
act (S. 1059/P.L. 106-65 of October 5, 1999). NR has established a reputation for
maintaining very high safety standards for engineering and operating Navy nuclear
power plants.
The first director of NR was Admiral Hyman Rickover, who served in the
position from 1948 until 1982. Rickover is sometimes referred to as the father of the
nuclear Navy. The current director is Admiral Kirkland Donald, who became
director in November 2004. He is the fifth person to hold the position.
Current Navy Nuclear-Powered Ships. As of the end of FY2007, the
Navy’s nuclear-powered fleet included all 71 of its submarines and 10 of its 11
aircraft carriers. The Navy’s combat submarine force has been entirely nuclear-
powered since 1990.4 The Navy’s carrier force is to become entirely nuclear powered5
in 2008.
Earlier Navy Nuclear-Powered Cruisers. In addition to nuclear-powered
submarines and nuclear-powered carriers, the Navy in the past built and operated
nine nuclear-powered cruisers (CGNs). The nine ships, which are shown in Table
2, include three one-of-a-kind designs (CGNs 9, 25, and 35) followed by the two-ship
California (CGN-36) class and the four-ship Virginia (CGN-38) class.
The nuclear-powered cruisers shown in Table 2 were procured to provide
nuclear-powered escorts for the Navy’s nuclear-powered carriers. Procurement of
nuclear-powered cruisers was halted after FY1975 largely due to a desire to constrain
the procurement costs of future cruisers. In deciding in the late 1970s on the design
for the new cruiser that would carry the Aegis defense system, two nuclear-powered
Aegis-equipped options — a 17,200-ton nuclear-powered strike cruiser (CSGN) and
a 12,100-ton derivative of the CGN-38 class design — were rejected in favor of a
third option of placing the Aegis system onto the smaller, conventionally powered
hull originally developed for the Spruance (DD-963) class destroyer. The CSGN was
estimated to have a procurement cost twice that of the DD-963-based option, while
the CGN-42 was estimated to have a procurement cost 30%-50% greater than that of
the DD-963-based option. The DD-963-based option became the 9,500-ton
Ticonderoga (CG-47) class Aegis cruiser. The first Aegis cruiser was procured in
FY1978.


3 See also 42 USC 7158.
4 The Navy’s final three non-nuclear-powered combat submarines were procured in FY1956,
entered service in 1959, retired in 1988-1990. A non-nuclear-powered, non-combat
auxiliary research submarine, the Dolphin (AGSS-555), was procured in FY1961, entered
service in 1968, and retired in January 2007.
5 The one conventionally powered carrier in service as of the end of FY2007 — the Kitty
Hawk (CV-63) — was procured in FY1956, entered service in 1961, and is scheduled to be
retired in 2008.

Table 2. Earlier Navy Nuclear-Powered Cruisers
Hull Displace- Pro- Entered Decom-
numberNameBuilderment (tons)curedservicemissioned
CGN-9Long BeachBethlehema17,100 FY5719611995
CGN-25BainbridgeBethlehema8,580 FY5919621996
CGN-35TruxtunNew Yorkb8,800 FY6219671995
CGN-36CaliforniaNGNNc10,530 FY6719741999
CGN-37South CarolinaNGNNc10,530 FY6819751999
CGN-38VirginiaNGNNc11,300 FY7019761994
CGN-39TexasNGNNc11,300 FY7119771993
CGN-40MississippiNGNNc11,300 FY7219781997
CGN-41ArkansasNGNNc11,300 FY7519801998
Source: Prepared by CRS based on Navy data and Norman Polmar, The Ships and Aircraft of the U.S.
Fleet.
a. Bethlehem Steel, Quincy, MA.
b. New York Shipbuilding, Camden, NJ.
c. Newport News Shipbuilding, now known as Northrop Grumman Newport News (NGNN).
Initial Fuel Core Included in Procurement Cost. The initial fuel core for
a Navy nuclear-powered ship is installed during the construction of the ship. The
procurement cost of the fuel core is included in the total procurement cost of the ship,
which is funded in the Navy’s shipbuilding budget, known formally as the
Shipbuilding and Conversion, Navy (SCN) appropriation account. In constant
FY2007 dollars, the initial fuel core for a Virginia (SSN-774) class submarine costs
about $170 million; the initial fuel cores for an aircraft carrier (which uses two
reactors and therefore has two fuel cores) have a combined cost of about $660
million.6
The procurement cost of a conventionally powered Navy ship, in contrast, does
not include the cost of petroleum-based fuel needed to operate the ship, and this fuel
is procured largely through the Operation and Maintenance, Navy (OMN)
appropriation account.
CG(X) Cruiser Program7
The Program in General. The CG(X) cruiser is the Navy’s planned
replacement for its 22 Aegis cruisers, which are projected to reach retirement age
between 2021 and 2029. The Navy’s planned 313-ship fleet calls for a total of 19
CG(X)s.8 The FY2009-FY2013 Future Years Defense Plan (FYDP) calls for


6 Source: Telephone conversation with Naval Reactors, March 8, 2007. Naval Reactor states
that the cost figure of about $660 million for an aircraft carrier ($330 million for each of two
fuel cores) applies to both existing Nimitz (CVN-68) class carriers and the new Gerald R.
Ford (CVN-78) class carrier (also known as the CVN-21 class).
7 For more on the CG(X) program, see CRS Report RL34179, Navy CG(X) Cruiser
Program: Background, Oversight Issues, and Options for Congress, by Ronald O’Rourke.
8 For more on the Navy’s 313-ship plan, see CRS Report RL32665, Navy Force Structure
(continued...)

procuring the first CG(X) in FY2011, but procurement of the first CG(X) reportedly
may be deferred to about FY2017.9
The Navy is currently assessing CG(X) design options in a large study called the
CG(X) Analysis of Alternatives (AOA), known more formally as the Maritime Air
and Missile Defense of Joint Forces (MAMDJF) AOA. The Navy initiated this AOA
in FY2006 and planned to complete it in FY2007. Nuclear power was an option
studied in the AOA. The Navy at one point stated a preference for basing the CG(X)
design on the hull design of the Navy’s new DDG-1000 destroyer, which is a
conventionally powered ship with a displacement of about 14,987 tons.
The Navy has stated that it wants to equip the CG(X) with a combat system
featuring a powerful radar capable of supporting ballistic missile defense (BMD)
operations.10 The Navy has testified that this combat system is to have a power
output of 30 or 31 megawatts, which is several times the power output of the combat
system on the Navy’s existing cruisers and destroyers.11 This suggests that in terms
of power used for combat system operations, the CG(X) might use substantially more
energy over the course of its life than the Navy’s existing cruisers and destroyers. As
discussed later in this report, a ship’s life-cycle energy use is a factor in evaluating
the economic competitiveness of nuclear power compared to conventional power.
Reactor Plant for a Nuclear-Powered CG(X). The Navy testified in 2007
that in the Navy’s 2006 study on alternative ship propulsion systems (see section
below), the notional medium-sized surface combatant in the study (which the study
defined as a ship with a displacement between 21,000 metric tons and 26,000 metric
tons) used a modified version of one-half of the reactor plant that the Navy has


8 (...continued)
and Shipbuilding Plans: Background and Issues for Congress, by Ronald O’Rourke.
9 One press report (Katherine McIntire Peters, “Navy’s Top Officer Sees Lessons in
Shipbuilding Program Failures,” GovernmentExecutive.com, September 24, 2008) quotes
Admiral Gary Roughead, the Chief of Naval Operations, as saying: “What we will be able
to do is take the technology from the DDG-1000, the capability and capacity that [will be
achieved] as we build more DDG-51s, and [bring those] together around 2017 in a
replacement ship for our cruisers.” (Material in brackets in the press report.) Another press
report (Zachary M. Peterson, “Part One of Overdue CG(X) AOA Sent to OSD, Second Part
Coming Soon,” Inside the Navy, September 29, 2008) quotes Vice Admiral Barry
McCullough, the Deputy Chief of Naval Operations for Integration of Capabilities and
Resources, as saying that the Navy did not budget for a CG(X) hull in its proposal for the
Navy’s budget under the FY2010-FY2015 Future Years Defense Plan (FYDP) to be
submitted to Congress in early 2009. An earlier report (Christopher P. Cavas, “DDG 1000
Destroyer Program Facing Major Cuts,” DefenseNews.com, July 14, 2008) stated that the
CG(X) would be delayed until FY2015 or later. See also Geoff Fein, “Navy Likely To
Change CG(X)’s Procurement Schedule, Official Says,” Defense Daily, June 24, 2008;
Rebekah Gordon, “Navy Agrees CG(X) By FY-11 Won’t Happen But Reveals Little Else,”
Inside the Navy, June 30, 2008.
10 For more on Navy BMD programs, see CRS Report RL33745, Sea-Based Ballistic Missile
Defense — Background and Issues for Congress, by Ronald O’Rourke.
11 Source: Testimony of Navy officials to the Seapower and Expeditionary Forces
Subcommittee of the House Armed Services Committee, March 1, 2007.

developed for its new Gerald R. Ford (CVN-78) class aircraft carriers, also called the
CVN-21 class.12 The Ford-class reactor plant, like the reactor plant on the Navy’s
existing Nimitz (CVN-68) class aircraft carriers, is a twin reactor plant that includes
two nuclear reactors.13 The medium-sized surface combatant employed a modified
version of one-half of this plant, with a single reactor.
This suggests that if the CG(X) is a ship with a displacement of 21,000 or more
metric tons, its reactor plant could be a modified version of one-half of the Ford-class
reactor plant. This approach would minimize the time and cost of developing a
reactor plant for a nuclear-powered CG(X). In the Ford class, the initial nuclear fuel
cores in the two reactors are to be sufficient to power the ship for one-half of its
expected life of 40 to 50 years. In a nuclear-powered CG(X), the Navy has said, the
initial fuel core in the single reactor would be sufficient to power the ship for its
entire expected life of 30 to 35 years. Since the two fuel cores for an aircraft carrier
cost about $660 million in constant FY2007 dollars (see previous section on initial
fuel cores), the cost of a single fuel core for a CG(X) might be about $330 million in
constant FY2007 dollars.
Construction Shipyards
Nuclear-Capable Shipyards. Two U.S. shipyards are currently certified to
build nuclear-powered ships — Northrop Grumman Newport News (NGNN) of
Newport News, VA, and General Dynamics’ Electric Boat Division (GD/EB) of
Groton, CT, and Quonset Point, RI. NGNN can build nuclear-powered surface ships
and nuclear-powered submarines. GD/EB can build nuclear-powered submarines.
NGNN has built all the Navy’s nuclear-powered aircraft carriers. NGNN also built
the final six nuclear-powered cruisers shown in Table 2. NGNN and GD/EB
together have built every Navy nuclear-powered submarine procured since FY1969.
Although NGNN and GD/EB are the only U.S. shipyards that currently build
nuclear-powered ships for the Navy, five other U.S. shipyards once did so as well.14
These five yards built 44 of the 107 nuclear-powered submarines that were procured
for the Navy through FY1968. Two of these five yards built the first three nuclear-
powered cruisers shown in Table 2.
Surface Combatant Shipyards. All cruisers and destroyers procured for
the Navy since FY1978 have been built at two shipyards — General Dynamics’ Bath
Iron Works (GD/BIW) of Bath, ME, and the Ingalls shipyard at Pascagoula, MS, that
now forms part of Northrop Grumman Ship Systems (NGSS). GD/BIW has never


12 Source: Testimony of Navy officials to the Seapower and Expeditionary Forces
Subcommittee of the House Armed Services Committee, March 1, 2007.
13 For more on the CVN-21 program, see CRS Report RS20643, Navy CVN-21 Aircraft
Carrier Program: Background and Issues for Congress, by Ronald O’Rourke.
14 The five yards are the Portsmouth Naval Shipyard of Kittery, ME; the Mare Island Naval
Shipyard of Mare Island, CA; the Ingalls shipyard of Pascagoula, MS, that now forms part
of Northrop Grumman Ship Systems; Bethlehem Steel of Quincy, MA (which became a part
of General Dynamics); and New York Shipbuilding of Camden, NJ.

built nuclear-powered ships. Ingalls is one of the five U.S. yards other than NGNN
and GD/EB that once built nuclear-powered ships. Ingalls built 12 nuclear-powered
submarines, the last being the Parche (SSN-683), which was procured in FY1968,
entered service in 1974, and retired in 2005.15 Ingalls also overhauled or refueled 11
nuclear-powered submarines. Ingalls’ nuclear facility was decommissioned in 1980,
and NGSS is not certified to build nuclear-powered ships.16
Recent Navy Studies for Congress
The Navy has conducted two recent studies for Congress on the potential cost-
effectiveness of expanding the use of nuclear power to a wider array of surface ships.
These studies are the 2005 Naval Reactors quick look analysis, and the more
comprehensive and detailed 2006 Navy alternative propulsion study. Each of these
is discussed below.
2005 Naval Reactors Quick Look Analysis. The 2005 NR quick look
analysis was conducted at the request of Representative Roscoe Bartlett, who was
then chairman of the Projection Forces Subcommittee of the House Armed Services
Committee (since renamed the Seapower and Expeditionary Forces Subcommittee).
The analysis concluded that the total life-cycle cost (meaning the sum of procurement
cost, life-cycle operating and support cost, and post-retirement disposal cost) of a
nuclear-powered version of a large-deck (LHA-type) amphibious assault ship would
equal that of a conventionally powered version of such a ship if the cost of crude oil
over the life of the ship averaged about $70 per barrel. The study concluded that the
total life-cycle cost of a nuclear-powered surface combatant would equal that of a
conventionally powered version if the cost of crude oil over the life of the ship
averaged about $178 per barrel. This kind of calculation is called a life-cycle cost
break-even analysis. The study noted but did not attempt to quantify the
mobility-related operational advantages of nuclear propulsion for a surface ship.17


15 Ingalls built its nuclear-powered submarines at its older East Bank facility. Ingalls’ newer
West Bank facility has been used for building conventionally powered surface ships,
principally surface combatants and large-deck amphibious ships.
16 In addition to building 12 nuclear-powered submarines, Northrop Grumman states that
Ingalls’ facilities “allowed Ingalls to participate in submarine overhaul and refueling. By
the time the shipyard’s nuclear facility was decommissioned in 1980, 11 U.S. Navy attack
submarines had been overhauled and/or refueled at Ingalls.” Source: Northrop Grumman
chronological perspective on Northrop Grumman Ship Systems, at
[ ht t p: / / www.ss.nor t hr opgr umma n.com/ c ompany/ c hr onol ogi cal .ht ml ] .
17 U.S. Naval Nuclear Propulsion Program, briefing entitled “Nuclear and Fossil Fuel
Powered Surface Ships, Quick Look Analysis,” presented to CRS on March 22, 2006. The
analysis concluded that total life-cycle costs for nuclear-powered versions of large-deck
aircraft carriers, LHA-type amphibious assault ships and surface combatants would equal
those of conventionally powered versions when the price of diesel fuel marine (DFM)
delivered to the Navy reached $55, $80, and $205 per barrel, respectively. Since the cost
of DFM delivered to the Navy was calculated to be roughly 15% greater than that of crude
oil, these figures corresponded to break-even crude-oil costs of about $48, $70, and $178
per barrel, respectively.

2006 Navy Alternative Propulsion Study. The more comprehensive and
detailed 2006 Navy alternative propulsion study was conducted in response to
Section 130 of the FY2006 defense authorization act (H.R. 1815, P.L. 109-163 of
January 6, 2006), which called for such a study (see Appendix). The study reached
a number of conclusions, including the following:
!In constant FY2007 dollars, building a Navy surface combatant or
amphibious ship with nuclear power rather than conventional power
would add roughly $600 million to $800 million to its procurement
cost.
— For a small surface combatant, the procurement-cost
increase was about $600 million.
— For a medium-size combatant (defined as a ship with
a displacement between 21,000 metric tons and
26,000 metric tons), the increase was about $600
million to about $700 million.
— For an amphibious ship, the increase was about $80018
million.
!Although nuclear-powered ships have higher procurement costs than
conventionally powered ships, they have lower operating and
support costs when fuel costs are taken into account.
!A ship’s operational tempo and resulting level of energy use
significantly influences the life-cycle cost break-even analysis. The
higher the operational tempo and resulting level of energy use
assumed for the ship, lower the cost of crude oil needed to break
even on a life-cycle cost basis, and the more competitive nuclear
power becomes in terms of total life-cycle cost.
!The newly calculated life-cycle cost break-even cost-ranges, which
supercede the break-even cost figures from the 2005 NR quick look
analysis, are as follows:
$210 per barrel to $670 per barrel for a small surface
— com b at ant ;
$70 per barrel to $225 per barrel for a medium-size
—surface combatant; and
$210 per barrel to $290 per barrel for an amphibious
—ship. In each case, the lower dollar figure is for a high
ship operating tempo, and the higher dollar figure is
for a low ship operating tempo.


18 In each case, the cost increase is for the fifth ship in a class being built at two shipyards.

!At a crude oil cost of $74.15 per barrel (which was a market price at
certain points in 2006), the life-cycle cost premium of nuclear power
is:
— 17% to 37% for a small surface combatant;
— 0% to 10% for a medium sized surface combatant;
and
— 7% to 8% for an amphibious ship.
!The life-cycle cost break-even analysis indicates that nuclear-power
should be considered for near-term applications for medium-size
surface combatants, and that life-cycle cost will not drive the
selection of nuclear power for small surface combatants or
amphibious ships. A nuclear-powered medium-size surface
combatant is the most likely of the three ship types studied to prove
economical, depending on the operating tempo that the ship actually
experiences over its lifetime.
!Compared to conventionally powered ships, nuclear-powered ships
have advantages in terms of both time needed to surge to a distant
theater of operation for a contingency, and operational presence
(time on station) in the theater of operation.19
Potential Issues for Congress
In assessing whether the CG(X) or other future Navy surface ships should be
nuclear-powered, Congress may consider a number of issues, including cost,
operational effectiveness, ship construction, ship maintenance and repair, crew
training, ports calls and forward homeporting, and environmental impact. Each of
these is discussed below.
Cost
Development and Design Cost. The cost calculations presented in the
2006 Navy alternative propulsion study do not include the additional up-front design
and development costs, if any, for a nuclear-powered surface ship. As discussed in
the Background section, if the CG(X) displaces 21,000 or more metric tons, the Navy
could have the option of fitting the CG(X) with a modified version of one-half of the
Ford (CVN-78) class aircraft carrier nuclear power plant. This could minimize the
up-front development cost of the CG(X) nuclear power plant. If the CG(X) is not
large enough to accommodate a modified version of one-half of the Ford-class plant,
then a new nuclear plant would need to be designed for the CG(X). Although this


19 Source: Statement of The Honorable Dr. Delores M. Etter, Assistant Secretary of the Navy
(Research, Development and Acquisition), et al., Before the Seapower and Expeditionary
Forces Subcommittee of the House Armed Services Committee on Integrated Nuclear Power
Systems for Future Naval Surface Combatants, March 1, 2007, pp. 4-5.

new plant could use components common to the Ford-class plant or other existing
Navy nuclear plants, the cost of developing this new plant would likely be greater
than the cost of modifying the Ford-class plant design.
Procurement Cost.
For the CG(X). As mentioned in the Background section, the Navy has stated
a preference for basing the design of the CG(X) on the design of its new DDG-1000
class destroyer, which is a conventionally powered ship. This approach could result
in a conventionally powered CG(X) design with a procurement cost similar to that
of the DDG-1000. If a conventionally powered CG(X) were to have a procurement
cost equal to that of the DDG-1000 design, then a nuclear-powered CG(X) might cost20
roughly 32% to 37% more than a conventionally powered CG(X). If a
conventionally powered CG(X) were to have a procurement cost greater than that of
the DDG-1000, then the percentage procurement cost premium for nuclear power for
the CG(X) would be less than 32% to 37%. The 2006 Navy study states that for a
medium-size surface combatant that is larger than the DDG-1000, an additional cost
of about $600 million to $700 million would equate to a procurement cost increase
of about 22%.
If building a Navy surface combatant or amphibious ship with nuclear power
rather than conventional power would add roughly $600 million to $700 million to
its procurement cost, then procuring one or two nuclear-powered CG(X)s per year,
as called for in the Navy’s 30-year shipbuilding plan, would cost roughly $600
million to $1,400 million more per year than procuring one or two conventionally
powered CG(X)s per year, and procuring a force of 19 nuclear-powered CG(X)s
would cost roughly $11.4 billion to $13.3 billion more than procuring a force of 19
conventionally powered CG(X)s. For purposes of comparison, the Navy has
requested a total of $13.7 billion for the SCN account for FY2008.
For Submarines and Aircraft Carriers. The Navy in 2007 estimated that
building the CG(X) or other future Navy surface ships with nuclear power could
reduce the production cost of nuclear-propulsion components for submarines and
aircraft carriers by 5% to 9%, depending on the number of nuclear-powered surface21
ships that are built. Building one nuclear-powered cruiser every two years, the
Navy has testified, might reduce nuclear-propulsion component costs by about 7%.
In a steady-state production environment, the Navy testified in 2007, the savings


20 The Navy in 2007 estimated that follow-on DDG-1000 destroyers would cost an average
of about $1.9 billion each to procure in constant FY2007 dollars. (This figure was based
on the then-year costs for the third through seventh ships in the DDG-1000 class, which the
Navy wants to procure in FY2009-FY2013. These costs were converted into constant
FY2007 dollars using a January 2007 Navy shipbuilding deflator. The deflator was
provided by the Navy to the Congressional Budget Office, which forwarded it to CRS.)
Increasing a ship’s procurement cost from about $1.9 billion to $2.5 billion or $2.6 billion
(i.e., increasing it by $600 million to $700 million) equates to an increase of 32% to 37%.
21 Statement of Admiral Kirkland H. Donald, U.S. Navy, Director, Naval Nuclear Propulsion
Program, Before the House Armed Services Committee Seapower and Expeditionary Forces
Subcommittee on Nuclear Propulsion For Surface Ships, 1 March 2007, p. 13.

might equate to about $115 million for each aircraft carrier, and about $35 million
for each submarine. The Navy stated that this “is probably the most optimistic
estimate.”22 The Navy states that these savings were not included in the cost
calculations presented in the 2006 Navy study.
BWXT, a principal maker of nuclear-propulsion components for Navy ships,
estimated in 2007 that increasing Virginia-class submarine procurement from one
boat per year to two boats per year would reduce the cost of nuclear propulsion
components 9% for submarines and 8% for aircraft carriers, and that “Adding a
nuclear[-powered] cruiser or [nuclear-powered] large-deck amphibious ship would
significantly drive down nuclear power plant costs across the fleet, even beyond the
savings associated with the second Virginia-class [submarine per year].”23
Total Life-Cycle Cost. As suggested by the 2006 Navy study, the total-life-
cycle cost break-even analysis can be affected by projections of future oil prices and
ship operating tempo.
Future Oil Prices. Views on potential future oil prices vary.24 Some
supporters of using nuclear power for the CG(X) and other future Navy surface ships,
such as Representatives Gene Taylor and Roscoe Bartlett, the chairman and ranking
member, respectively, of the Seapower and Expeditionary Forces Subcommittee of
the House Armed Services Committee, believe that oil in coming decades may
become increasingly expensive, or that guaranteed access to oil may become more
problematic, and that this is a central reason for making the CG(X) or other future
Navy surface ships nuclear-powered.25
Ship Operating Tempo. A ship’s average lifetime operating tempo can be
affected by the number of wars, crises, and other contingency operations that it
participates in over its lifetime, because such events can involve operating tempos
that are higher than those of “normal” day-to-day operations. Ship operating tempo
can also be affected by the size of the Navy. The lower the number of ships in the
Navy, for example, the higher the operating tempo each a ship might be required to
sustain for the fleet to accomplish a given set of missions.
CG(X) vs. Medium-Size Surface Combatant. If the CG(X) is based on
the hull design of the 14,500-ton DDG-1000 destroyer, which is the Navy’s stated


22 Spoken testimony of Admiral Kirkland Donald before the Seapower and Expeditionary
Forces Subcommittee of the House Armed Services Committee, March 1, 2007.
23 Testimony of Winfred Nash, President, BWXT, Nuclear Operations Division, Before the
Subcommittee on Seapower and Expeditionary Forces of the House Armed Service
Committee [on Submarine Force Structure and Acquisition Policy], March 8, 2007, pp. 2
and 4.
24 For a standard U.S. government projection of future oil prices, assuming current policy
remains in place, see the Energy Information Administration’s Annual Energy Outlook, at
[ h t t p : / / www.ei a.doe.gov/ o i a f / aeo/ i ndex.ht ml ] .
25 See, for example, the remarks of Representative Taylor at the hearing of the Seapower and
Expeditionary Forces Subcommittee of the House Armed Services Committee, March 1,

2007.



preference, then the CG(X) may be smaller the 21,000- to 26,000-ton medium-size
surface combatant in the 2006 Navy study. What difference that might create
between the CG(X) and the medium-size surface combatant in terms of life-cycle
energy use, and thus life-cycle cost break-even range, is not clear. The Navy has
testified that the medium sized surface combatant in the 2006 study was modeled
with a radar requiring 30 or 31 megawatts of power, like the radar the Navy wants
to install on the CG(X).26
Operational Effectiveness
Operational Value of Increased Ship Mobility. What is the operational
value of increased ship mobility? How much better can a ship perform its missions
as a result of this increased mobility? And is there some way to translate the mobility
advantages of nuclear power into dollar terms? One potential way to translate the
value of increased ship mobility into dollar terms would be to determine how much
aggregate capability a force of 19 conventionally powered CG(X)s would have for
surging to distant theaters and for maintaining on-station presence in theater, then
determine how many nuclear-powered CG(X)s would be required to provide the
same aggregate capability, and then compare the total cost of the 19 conventionally
powered CG(X)s to the total cost of the nuclear-powered CG(X) force.
Potential Other Operational Advantages of Nuclear Power. Are there
operational advantages of nuclear power for a surface ship other than increased ship
mobility? One possibility concerns ship detectability. A nuclear-powered ship does
not require an exhaust stack as part of its deckhouse, and does not emit hot exhaust
gases. Other things held equal, this might make a nuclear-powered surface ship less
detectible than a conventionally powered ship, particularly to infrared sensors. This
possible advantage for the nuclear-powered ship might be either offset or reinforced
by possible differences between the nuclear-powered ship and the conventionally
powered ship in other areas, such as the temperature of the engine compartment
(which again might affect infrared detectability) or the level of machinery noise
(which might affect acoustic detectability).
Some supporters of building future Navy surface ships with nuclear power have
argued that an additional operational advantage of nuclear power for surface ships
would be to reduce the Navy’s dependence on its relatively small force of refueling
oilers, and thus the potential impact on fleet operations of an enemy attack on those
oilers. The Navy acknowledges that potential attacks on oilers are a concern, but
argues that the fleet’s vulnerability to such attacks is recognized and that oilers
consequently are treated as high-value ships in terms of measures taken to protect
them from attack.27


26 Source: Testimony of Navy officials to the Seapower and Expeditionary Forces
Subcommittee of the House Armed Services Committee, March 1, 2007.
27 Spoken testimony of Vice Admiral Jonathan Greenert before the Seapower and
Expeditionary Forces Subcommittee of the House Armed Services Committee, March 1,

2007.



Another potential advantage of nuclear power postulated by some observers is
that a nuclear-powered ship can use its reactor to provide electrical power for use
ashore for extended periods of time, particularly to help localities that are
experiencing brownouts during peak use periods or whose access to electrical power
from the grid has been disrupted by a significant natural disaster or terrorist attack.
The Navy has stated that the CG(X) is to have a total power-generating capacity of
about 80 megawatts (MW). Some portion of that would be needed to operate the
reactor plant itself and other essential equipment aboard the ship. Much of the rest
might be available for transfer off the ship. For purposes of comparison, a typical
U.S. commercial power plant might have a capacity of 300 MW to 1000 MW. A
single megawatt can be enough to meet the needs of several hundred U.S. homes,
depending on the region of the country and other factors.28
Skeptics of the idea of using nuclear-powered ships to generate electrical power
for use ashore could argue that if the local transmission system has been disrupted,
the ship’s generation capacity may be of limited use in restoring electric power. If
the local transmission system is intact, they could argue, onshore infrastructure would
be required to transmit the ship’s power into the local system. The military or a local
utility, they could argue, would likely bear the cost for this infrastructure, which
would be used only on a sporadic basis. Skeptics could argue that a Navy ship would
be helpful only if the power emergency lasts longer than the time it would take for
the ship to reach the connection point. If the nearest available Navy ship is several
steaming days away from the connection point when the power emergency occurs,
they could argue, the ship might not be able arrive before local power is partially or
fully restored. Skeptics could argue that critical facilities in the area of the power
emergency, such as hospitals, would likely be equipped with emergency back-up
diesel generators to respond to short-term loss of power.29
Ship Construction
Shipyards. Another potential issue for Congress to consider in weighing
whether the CG(X) or other future Navy surface ships should be nuclear-powered
concerns the shipyards that would be used to build the ships. There are at least three
potential approaches for building nuclear-powered CG(X)s:
!Build them at NGNN, with GD/EB possibly contributing to the
construction of the ships’ nuclear portions.
!Certify NGSS and/or GD/BIW to build nuclear-powered ships, and
then build the CG(X)s at those yards.


28 See, for example, the discussion of the issue at [http://www.utilipoint.com/issuealert/
print.asp?id=1728].)
29 For examples of articles discussing the idea of using nuclear-powered ships to generate
electrical power for use ashore, see Jose Femenia, “Nuclear Ships Can Help Meet U.S.
Electrical Needs,” U.S. Naval Institute Proceedings, August 2004: 78-80; and Linda de
France, “Using Navy Nuclear Reactors To Help Power California Not Worth Effort,”
Aerospace Daily, May 4, 2001.

!Build the nuclear portions of the CG(X)s at NGNN and/or GD/EB,
the non-nuclear portions at NGSS and/or GD/BIW, and perform
final assembly, integration, and test work for the ships at either
— NGNN and/or GD/EB, or
— NGSS and/or GD/BIW.
These options have significant potential implications for workloads and
employment levels at each of these shipyards.
On the question of what would be needed to certify NGSS and/or GD/BIW to
build nuclear-powered ships, the director of NR testified that
Just the basics of what it takes to have a nuclear-certified yard, to build one
from scratch, or even if one existed once upon a time as it did at Pasacagoula,
and we shut it down, first and foremost you have to have the facilities to do that.
What that includes, and I have just some notes here, but such things as you have
to have the docks and the dry-docks and the pier capability to support nuclear
ships, whatever that would entail. You would have to have lifting and handling
equipment, cranes, that type of thing; construction facilities to build the special
nuclear components, and to store those components and protect them in the way
that would be required.
The construction facilities would be necessary for handling fuel and doing
the fueling operations that would be necessary on the ship — those types of
things. And then the second piece is, and probably the harder piece other than
just kind of the brick-and-mortar type, is building the structures, the
organizations in place to do that work, for instance, nuclear testing, specialized
nuclear engineering, nuclear production work. If you look, for instance, at
Northrop Grumman Newport News, right now, just to give you a perspective of
the people you are talking about in those departments, it is on the order of 769
people in nuclear engineering; 308 people in the major lines of control
department; 225 in nuclear quality assurance; and then almost 2,500 people who
do nuclear production work. So all of those would have to be, you would have30
to find that workforce, certify and qualify them, to be able to do that.
The director of NR testified that NGNN and GD/BIW “have sufficient capacity
to accommodate nuclear-powered surface ship construction, and therefore there is no
need to make the substantial investment in time and dollars necessary to generate
additional excess capacity.”31 In light of this, the Navy testified, only the first and32
third options above are “viable.” The director of NR testified that:


30 Spoken testimony of Admiral Kirkland Donald before the Seapower and Expeditionary
Forces Subcommittee of the House Armed Services Committee, March 1, 2007.
31 Statement of Admiral Kirkland H. Donald, U.S. Navy, Director, Naval Nuclear Propulsion
Program, Before the House Armed Services Committee Seapower and Expeditionary Forces
Subcommittee on Nuclear Propulsion For Surface Ships, 1 March 2007, p. 13.
32 Source: Statement of The Honorable Dr. Delores M. Etter, Assistant Secretary of the Navy
(Research, Development and Acquisition), et al., Before the Seapower and Expeditionary
(continued...)

my view of this is we have some additional capacity at both Electric Boat and at
Northrop Grumman Newport News. My primary concern is if we are serious
about building another nuclear-powered warship, a new class of warship, cost is
obviously going to be some degree of concern, and certainly this additional costs,
which would be — and I don’t have a number to give you right now, but I think
you can see it would be substantial to do it even if you could. It probably doesn’t
help our case to move down the path toward building another nuclear-powered33
case, when we have the capability existing already in those existing yards.
With regard to the third option of building the nuclear portions of the ships at
NGNN and/or GD/EB, and the non-nuclear portions at NGSS and/or GD/BIW, the
Navy testified that the “Location of final ship erection would require additional
analysis.” One Navy official, however, expressed a potential preference for
performing final assembly, integration, and test work at NGNN or GD/EB, stating
that:
we are building warships in modular sections now. So if we were going to [ask],
“Could you assemble this [ship], could you build modules of this ship in different
yards and put it together in a nuclear-certified yard?”, the answer is yes,
definitely, and we do that today with the Virginia Class [submarine program].
As you know, we are barging modules of [that type of] submarine up and down
the coast.
What I would want is, and sort of following along with what [NR director]
Admiral [Kirkland] Donald said, you would want the delivering yard to be the
yard where the reactor plant was built, tooled, and tested, because they have the
expertise to run through all of that nuclear work and test and certify the ship and
take it out on sea trials.
But the modules of the non-reactor plant, which is the rest of the ship, could
be built theoretically at other yards and barged or transported in other fashion to
the delivering shipyard. If I had to do it ideally, that is where I would probably
start talking to my industry partners, because although we have six [large]
shipyards [for building large navy ships], it is really two corporations [that own
them], and those two corporations each own what is now a surface combatant
shipyard and they each own a nuclear-capable shipyard. I would say if we were
going to go do this, we would sit down with them and say, you know, from a
corporation standpoint, what would be the best work flow? What would be the
best place to construct modules? And how would you do the final assembly and34


testing of a nuclear-powered warship?
32 (...continued)
Forces Subcommittee of the House Armed Services Committee on Integrated Nuclear Power
Systems for Future Naval Surface Combatants, March 1, 2007, p. 7.
33 Spoken testimony of Admiral Kirkland Donald before the Seapower and Expeditionary
Forces Subcommittee of the House Armed Services Committee, March 1, 2007.
34 Spoken testimony of Vice Admiral Paul E. Sullivan, Commander, Naval Sea Systems
Command, to the Seapower and Expeditionary Forces Subcommittee of the House Armed
Services Committee, March 1, 2007.

Nuclear-Propulsion Component Manufacturers. A related issue that
Congress may consider in weighing whether the CG(X) or other future Navy surface
ships should be nuclear-powered is whether there is sufficient capacity at the firms
that make nuclear-propulsion components to accommodate the increase in production
volume that would result from building the CG(X) or other future Navy surface ships
with nuclear power. On this question, the Navy has testified:
Right now, as I look across the industrial base that provides [for nuclear-
powered ships], let’s just talk about the components, for instance, and I just look
across that base, because we have been asserting earlier that we were going to go
to [a procurement rate of two Virginia-class submarines per year] earlier [than
the currently planned year of FY2012], we had facilitized and have sustained an
over-capacity in those facilities to support construction of those additional
components. So right now, it depends on the vendor and which one is doing
what, the capacity is running right now at probably about 65 percent of what it
could be doing, on the order of that. Again, it varies depending on the vendor
specifically.
So there is additional capacity in there, and even with the addition of a
second Virginia-class submarine, there is still a margin in there, if you are talking
about a single cruiser in the early phases of design, we still have margin in there
that I believe we can sustain that work in addition to the submarine work within
the industrial base.
We would have to look at that in more detail once we determine what the
design looks like and the degree to which we can use existing components. If
you had to design new components, that would add a little bit more complexity35
to it, but that is a rough estimate of what I would provide for you now.
Ship Maintenance and Repair
Building CG(X)s or other future Navy surface ships with nuclear power could
affect the future distribution of Navy ship maintenance and repair work, because only
certain U.S. shipyards are qualified for performing certain kinds of work on nuclear-
powered ships. Much of the maintenance and repair work done on nuclear-powered
ships is done at the country’s four government-operated naval shipyards (NSYs) —
Portsmouth NSY at Kittery, ME, Norfolk NSY at Norfolk, VA; Puget Sound NSY
at Bremerton, WA; and Pearl Harbor NSY at Pearl Harbor, HI. NGNN and GD/EB
also perform some maintenance and repair work on nuclear-powered ships.
Crew Training
Would the Navy have the capacity to train the additional nuclear-qualified
sailors that would be needed to crew additional nuclear-powered ships? On this
question, the director of NR testified that “My training pipeline does have the
capacity without further infrastructure investment to produce the additional personnel
required by future classes of [nuclear-powered] ships.” He also stated:


35 Spoken testimony of Admiral Kirkland Donald before the Seapower and Expeditionary
Forces Subcommittee of the House Armed Services Committee, March 1, 2007.

We, in looking at the training pipeline, there are a couple of dynamics that
are in work right now. First off, the [nuclear-powered aircraft carrier] Enterprise
is going to be going away [in 2013], and that is a pretty significant training load36
just to keep that crew operating. And also, there as the CVN-21 [carrier class]
comes on, [that is, as] the Ford-class carriers come on, and the [Nimitz-class
nuclear-powered carriers] start to go away, [the number of people required to
crew carriers will decrease, because with the] Ford class, we are targeting a 50
percent reduction in the reactor department sizing over there [compared to the
Nimitz class].
So for the foreseeable future, the training infrastructure that we have right
now will meet the needs to sustain this [additional] class [of nuclear-powered37
ship], if you choose to do it.
Port Calls and Forward Homeporting
A nuclear-powered ship might be less welcome than a conventionally powered
ship in the ports of countries with strong anti-nuclear sentiments. The Navy works
to minimize this issue in connection with its nuclear-powered submarines and aircraft
carriers, and states that “U.S. nuclear-powered warships are welcome today in over
150 ports in more than 50 countries worldwide, thus allowing our warships to carry
out their mission without constraint.”38
Some Navy ships are forward-homeported, meaning that they are homeported
in foreign countries that are close to potential U.S. Navy operating areas overseas.
Forward-homeported Navy ships have occasional need for access to maintenance
facilities near their home ports, and foreign shipyards are not qualified to perform
certain kinds of maintenance work on nuclear-powered Navy ships. Building
CG(X)s or other future Navy surface ships with nuclear power might thus affect the
number of potentially suitable locations for forward-homeporting the ships, should
the Navy decide that forward homeporting them would be desirable for purposes of
shortening transit times to and from potential operating areas.
Environmental Impact
Conventionally powered ships exhaust greenhouse gases and other pollutants
that are created through combustion of petroleum-based fuel. They can also leak fuel
into the water, particularly if they are damaged in an accident (such as a collision) or
by enemy attack. Other environmental impacts of conventionally powered ships
include those associated with extracting oil from the ground, transporting it to a
refinery, refining it into fuel, and transporting that fuel to the ship. Most of these
activities produce additional greenhouse gases and other pollutants.


36 The Enterprise has a one-of-a-kind, eight-reactor nuclear power plant that creates training
demands unique to that ship.
37 Spoken testimony of Admiral Kirkland Donald before the Seapower and Expeditionary
Forces Subcommittee of the House Armed Services Committee, March 1, 2007.
38 Spoken testimony of Admiral Kirkland Donald before the Seapower and Expeditionary
Forces Subcommittee of the House Armed Services Committee, March 1, 2007.

Nuclear-powered ships do not exhaust greenhouse gases and other pollutants
created through conventional combustion. The environmental impacts of
nuclear-powered ships include those associated with mining and processing uranium
to fuel reactors, and with storing and disposing of spent nuclear fuel cores,
radioactive waste water from reactors, and the reactors and other radioactive
components of retired nuclear-powered ships. As mentioned in the Background
section, NR has established a reputation for maintaining very high safety standards
for engineering and operating Navy nuclear power plants. In addition, Navy combat
ships are built to withstand significant shock and battle damage. It is possible,
however, that a very serious accident involving a nuclear-powered Navy ship (such
as a major collision) or a major enemy attack on a nuclear-powered Navy ship might
damage the ship’s hull and reactor compartment enough to cause a release of
radioactivity, which may have adverse effects on the environment.
Potential Options for Congress
Potential options for Congress regarding the issue of whether the CG(X) or
other future Navy surface ships should be nuclear-powered include but are not
limited to the following, some of which might be combined:
!for the CG(X) or other future Navy surface ships, direct the Navy to
provide Congress with acquisition plans (including annual funding
requirements) for both conventionally powered and nuclear-powered
versions, so that Congress can assess both plans;
!to equalize the treatment of petroleum-based and nuclear fuel in
Navy ship procurement costs, direct the Navy to exclude the cost of
initial fuel cores for nuclear-powered ships from the total
procurement cost of those ships, and to fund the procurement of
those cores through an appropriation account other than the
Shipbuilding and Conversion, Navy (SCN) account;
!direct the Navy to build the CG(X) as a nuclear-powered ship;
!provide initial research and development funding to start work on
adapting the design of the Ford-class aircraft carrier nuclear power
plant for use in the CG(X); and
!direct the Navy to study the option of, or begin the process of,
certifying NGSS and/or GD/BIW to build nuclear-powered ships.
Legislative Activity for FY2009
FY2009 Defense Authorization Bill (H.R. 5658/S. 3001)
House. The House-reported version of H.R. 5658 contains a provision
(Section 1013) that would amend Section 1012 of the FY2008 defense authorization



act (see discussion below) to include amphibious ships and amphibious command
ships of a certain minimum size as among the types of ships to be built in the future
with nuclear power unless the Secretary of Defense notifies Congress that nuclear
power for a given class of ship would not be in the national interest. Section 1013
states:
SEC. 1013. POLICY RELATING TO MAJOR COMBATANT VESSELS OF
THE STRIKE FORCES OF THE UNITED STATES NAVY.
Section 1012(c)(1) of the National Defense Authorization Act for Fiscal Year

2008 (Public Law 110-181) is amended by adding at the end the following:


‘(D) Amphibious assault ships, including dock landing ships (LSD), amphibious
transport-dock ships (LPD), helicopter assault ships (LHA/LHD), and
amphibious command ships (LCC), if such vessels exceed 15,000 dead weight39
ton light ship displacement.’
In its report (H.Rept. 110-652 of May 16, 2008) on H.R. 5658, the House
Armed Services Committee stated:
This section would amend section 1012 of the National Defense
Authorization Act for Fiscal Year 2008 (Public Law 110-181) by requiring that
in addition to future ship classes of aircraft carriers, major surface combatants,
and submarines, that assault echelon amphibious ships also must be constructed
with integrated nuclear power systems if the ship’s light weight displacement is40
greater than 15 thousand tons.
The committee believes the future naval force should not be reliant on the
availability of fossil fuel for fleet operations. Removing the need for access to
fossil fuel sources significantly multiplies the effectiveness of the entire battle
force and eliminates the dependence on foreign nation support of deployed naval
forces. (Pages 428-429)
Senate. The report of the Senate Armed Services Committee on S. 3001
(S.Rept. 110-335 of May 12, 2008) states, with regard to the CG(X) cruiser, that:
The John Warner National Defense Authorization Act for Fiscal Year 2007
(Public Law 109-364) required that the Navy include nuclear power in its
Analysis of Alternatives (AoA) for the CG(X) propulsion system.


39 The sizes of commercial ships are often expressed in deadweight tons, while the sizes of
Navy combatant ships are usually expressed in terms of full load or light ship displacement.
The terms deadweight tons and light ship displacement are not normally joined together to
form a single expression of a ship’s size. When joined together, the two terms can be
viewed as being in tension with one another, since the first refers to the weight of a ship’s
cargo, fuel, water, stores, and other loads, while the second refers to the weight of a ship
without these loads.
40 This report language, which refers to light weight displacement but not to deadweight
tons, suggests that the inclusion of the words “dead weight ton” in the Section 1013 might
be a printing error.

Section 1012 of the National Defense Authorization Act for Fiscal Year

2008 (Public Law 110-181) further requires that CG(X) be nuclear powered,


unless the Secretary of Defense submits a notification that inclusion of an
integrated nuclear power system is not in the national interest. The statement of
managers accompanying that act directed the Secretary of the Navy to submit a
report with the budget request for fiscal year 2009 providing information
regarding CG(X) design, cost, schedule, industrial base considerations, and risk
assessment; that would reflect the results of the CG(X) AoA and provide
evidence that the Navy is on schedule for procuring the first ship of the class in

2011.


The Secretary of the Navy has delayed submission of the CG(X) report
because the CG(X) AoA, which was scheduled to be complete by third quarter
fiscal year 2007, remains under review by the Navy. Fundamental considerations
regarding the cruiser’s requirements, characteristics, technology readiness levels,
and affordability continue to be studied, making it likely that milestone A, which
was targeted for September 2007, will slip into 2009. By all measures, there is
no reasonable path for the next-generation cruiser to meet the current schedule
for milestone B and award of a ship construction contract in 2011.
Pending completion of the AoA, determination of radar requirements, ship
characteristics, propulsion system, and an executable program schedule, and in
view of the delay to program major milestones, the activities planned for fiscal
years 2008 and 2009 cannot be executed per the schedule reflected in the fiscal
year 2009 budget request. Therefore, the committee recommends a decrease [in
the Navy’s request for FY2009 research and development funding] of $87.2
million in PE 64300N and a decrease of $33.6 million in PE 64501N. These
recommended decreases would maintain the cruiser development activities at the
same level as was funded in fiscal year 2008. (Page 195)
Compromise. In lieu of a conference report, there was a compromise version
of S. 3001 that was accompanied by a joint explanatory statement. Section 4 of S.
3001 states that the joint explanatory statement “shall have the same effect with
respect to the implementation of this Act as if it were a joint explanatory statement
of a committee of conference.”
Section 1015 of S. 3001 amends Section 1012 of the FY2008 defense
authorization act (see discussion below) to include amphibious ships and amphibious
command ships of a certain minimum size as among the types of ships to be built in
the future with nuclear power unless the Secretary of Defense notifies Congress that
nuclear power for a given class of ship would not be in the national interest. Section

1015 states:


SEC. 1015. POLICY RELATING TO MAJOR COMBATANT VESSELS OF
THE STRIKE FORCES OF THE UNITED STATES NAVY.
Section 1012(c)(1) of the National Defense Authorization Act for Fiscal Year

2008 (Public Law 110-181) is amended by adding at the end the following:


“(D) Amphibious assault ships, including dock landing ships (LSD), amphibious
trans port — dock ships (LPD), helicopter assault ships (LHA/LHD), and



amphibious command ships (LCC), if such vessels exceed 15,000 dead weight41
ton light ship displacement.”.
FY2009 Defense Appropriations Act (H.R. 2638/P.L. 110-329)
House. The House Appropriations Committee did not file a report on the
FY2009 defense appropriations bill. On July 30, 2008, Representative John Murtha,
the chairman of the Defense subcommittee of the House Appropriations Committee,
issued a press release summarizing the subcommittee’s markup of the bill that same
day.42 The press release does not mention the issue of nuclear power for Navy
surface ships.
Senate. The Senate Appropriations Committee did not file a report on the
FY2009 defense appropriations bill. On September 10, 2008, the committee issued
a press release summarizing the markup of the bill that day by its Defense
subcommittee.43 The press release does not mention the issue of nuclear power for
Navy surface ships.
Compromise. In lieu of a conference report, there was a compromise version
of the FY2009 defense appropriations bill that was incorporated as Division C of
H.R. 2638/P.L. 110-329 of September 30, 2008. (H.R. 2638, the FY2009
Department of Homeland Security appropriations bill, was amended to become a
consolidated appropriations bill that includes, among other things, the FY2009
defense appropriations bill.) The compromise version of H.R. 2638 was
accompanied by an explanatory statement. H.R. 2638 provides procurement and
advance procurement funding for nuclear-powered aircraft carriers, and the joint
explanatory statement contains report language relating to electric propulsion
technology for surface combatants, but H.R. 2638 and the accompanying explanatory
statement do not contain bill or report language relating directly to the issue of
nuclear power for Navy surface ships other than aircraft carriers.
Legislative Activity for FY2008
FY2008 Defense Authorization Act (H.R. 4986/P.L. 110-181)
House. The House-reported version of the FY2008 defense authorization bill
(originally H.R. 1585, a bill that was succeeded by H.R. 4986 following a
presidential veto of H.R. 1585 ) contained a provision (Section 1012) that would
make it U.S. policy to build submarines, aircraft carriers, cruisers, and other large


41 The inclusion of the words “dead weight ton” in this section might be a printing error; see
the previous two footnotes for a discussion.
42 July 30, 2008, press release from The Honorable John P. Murtha, entitled “Murtha
Summary of the FY09 Defense Appropriations Bill.”
43 September 10, 2008, press release from Senate Appropriations Committee, entitled
“Senate Defense Appropriations Subcommittee Approves Fiscal Year 2009 Defense
Appropriations Bill.”

surface combatants with nuclear power unless the Secretary of Defense notifies
Congress that nuclear power for a given class of ship would not be in the national
interest. The provision stated:
SEC. 1012. POLICY RELATING TO MAJOR COMBATANT VESSELS OF
THE STRIKE FORCES OF THE UNITED STATES NAVY.
(a) Integrated Nuclear Power Systems- It is the policy of the United States to
construct the major combatant vessels of the strike forces of the United States
Navy, including all new classes of such vessels, with integrated nuclear power
systems.
(b) Requirement to Request Nuclear Vessels- If a request is submitted to
Congress in the budget for a fiscal year for construction of a new class of major
combatant vessel for the strike forces of the United States, the request shall be
for such a vessel with an integrated nuclear power system, unless the Secretary
of Defense submits with the request a notification to Congress that the inclusion
of an integrated nuclear power system in such vessel is not in the national
interest.
(c) Definitions- In this section:
(1) MAJOR COMBATANT VESSELS OF THE STRIKE FORCES OF THE
UNITED STATES NAVY- The term `major combatant vessels of the strike
forces of the United States Navy’ means the following:
(A) Submarines.
(B) Aircraft carriers.
(C) Cruisers, battleships, or other large surface combatants whose primary
mission includes protection of carrier strike groups, expeditionary strike groups,
and vessels comprising a sea base.
(2) INTEGRATED NUCLEAR POWER SYSTEM- The term `integrated nuclear
power system’ means a ship engineering system that uses a naval nuclear reactor
as its energy source and generates sufficient electric energy to provide power to
the ship’s electrical loads, including its combat systems and propulsion motors.
(3) BUDGET- The term `budget’ means the budget that is submitted to Congress
by the President under section 1105(a) of title 31, United States Code.
The House Armed Services Committee, in its report (H.Rept. 110-146 of May

11, 2007) on H.R. 1585, stated the following in regard to Section 1012:


This section would require that all new ship classes of submarines, cruisers,
and aircraft carriers be built with nuclear power systems unless the Secretary of
Defense notifies the committee that it is not in the national interest to do so.
The committee believes that the mobility, endurance, and electric power
generation capability of nuclear powered warships is essential to the next
generation of Navy cruisers. The Navy’s report to Congress on alternative
propulsion methods for surface combatants and amphibious warfare ships,



required by section 130 of the National Defense Authorization Act for Fiscal
Year 2006 (Public Law 109-163), indicated that the total lifecycle cost for
medium-sized nuclear surface combatants is equivalent to conventionally
powered ships. The committee notes that this study only compared acquisition
and maintenance costs and did not analyze the increased speed and endurance
capability of nuclear powered vessels.
The committee believes that the primary escort vessels for the Navy’s fleet
of aircraft carriers should have the same speed and endurance capability as the
aircraft carrier. The committee also notes that surface combatants with nuclear
propulsion systems would be more capable during independent operations
because there would be no need for underway fuel replenishment. (Page 387)
Senate. The Senate-reported version of the FY2008 defense authorization bill
(S. 1547) did not contain a provision analogous to Section 1012 of the House-
reported version of H.R. 1585. The report of the Senate Armed Services Committee
on S. 1547 (S.Rept. 110-77 of June 5, 2007) did not comment directly on the issue
of nuclear power for Navy ships other than submarines and aircraft carriers.
Conference. Section 1012 of the conference report (H.Rept. 110-477 of
December 6, 2007) on H.R. 1585 is the same as Section 1012 of the House-reported
version of H.R. 1585 (see discussion above). In discussing Section 1012, the
conference report stated:
The Navy’s next opportunity to apply this guidance will be the next
generation cruiser, or “CG(X)”. Under the current future-years defense program
(FYDP), the Navy plans to award the construction contract for CG(X) in fiscal
year 2011. Under this provision, the next cruiser would be identified as
“CGN(X)” to designate the ship as nuclear powered. Under the Navy’s normal
shipbuilding schedule for the two programs that already have nuclear power
systems (aircraft carriers and submarines), the Navy seeks authorization and
appropriations for long lead time nuclear components for ships 2 years prior to
full authorization and appropriation for construction.
The conferees recognize that the milestone decision for the Navy’s CG(X)
is only months away. After that milestone decision, the Navy and its contractors
will begin a significant design effort, and, in that process, will be making
significant tradeoff decisions and discarding major options (such as propulsion
alternatives). This is the normal process for the Navy and the Department of
Defense (DOD) to make choices that will lead to producing a contract design that
will be the basis for awarding the construction contract for the lead ship in 2011.
In order for the Navy to live by the spirit of this guidance, the conferees
agree that:
(1) the Navy would be required to proceed through the contract design
phase of the program with a comprehensive effort to design a CGN(X)
independent of the outcome of decisions that the Navy or the DOD will make at
the next milestone decision point regarding any preferred propulsion system for
the next generation cruiser;



(2) if the Navy intends to maintain the schedule in the current FYDP and
award a vessel in fiscal year 2011, the Navy would need to request advance
procurement for nuclear components in the fiscal year 2009 budget request; and
(3) the Navy must consider options for:
(a) maintaining the segment of the industrial base that currently produces
the conventionally powered destroyer and amphibious forces of the Navy;
(b) certifying yards which comprise that segment of the industrial base to
build nuclear-powered vessels; or
(c) seeking other alternatives for building non-nuclear ships in the future
if the Navy is only building nuclear-powered surface combatant ships for some
period of time as it builds CGN(X) vessels; and
(d) identifying sources of funds to pay for the additional near-term costs of
the integrated nuclear power system, either from offsets within the Navy’s
budget, from elsewhere within the Department’s resources, or from gaining
additional funds for DOD overall.
The conferees recognize that these considerations will require significant
additional near-term investment by the Navy. Some in the Navy have asserted
that, despite such added investment, the Navy would not be ready to award a
shipbuilding contract for a CGN(X) in fiscal year 2011 as in the current FYDP.
Section 128 of the John Warner National Defense Authorization Act for
Fiscal Year 2007 (Public Law 109 — 364) required that the Navy include
nuclear power in its Analysis of Alternatives (AOA) for the CG(X) propulsion
system. The conferees are aware that the CG(X) AOA is nearing completion, in
which case the Navy should have some indications of what it will require to
design and construct a CGN(X) class.
Accordingly, the conferees direct the Secretary of the Navy to submit a
report to the congressional defense committees with the budget request for fiscal
year 2009 providing the following information:
(1) the set of next generation cruiser characteristics, such as displacement
and manning, which would be affected by the requirement for including an
integrated nuclear power system;
(2) the Navy’s estimate for additional costs to develop, design, and
construct a CGN(X) to fill the requirement for the next generation cruiser, and
the optimal phasing of those costs in order to deliver CGN(X) most affordably;
(3) the Navy’s assessment of any effects on the delivery schedule for the
first ship of the next generation cruiser class that would be associated with
shifting the design to incorporate an integrated nuclear propulsion system,
options for reducing or eliminating those schedule effects, and alternatives for
meeting next generation cruiser requirements during any intervening period if the
cruiser’s full operational capability were delayed;



(4) the Navy’s estimate for the cost associated with certifying those
shipyards that currently produce conventionally powered surface combatants, to
be capable of constructing and integrating a nuclear-powered combatant;
(5) any other potential effects on the Navy’s 30-year shipbuilding plan as
a result of implementing these factors;
(6) such other considerations that would need to be addressed in parallel
with design and construction of a CGN(X) class, including any unique test and
training facilities, facilities and infrastructure requirements for potential CGN(X)
homeports, and environmental assessments that may require long-term
coordination and planning; and
(7) an assessment of the highest risk areas associated with meeting this
requirement, and the Navy’s alternatives for mitigating such risk. (Pages 984-

986)


H.R. 1585 was vetoed by the President on December 28, 2007. In response,
Congress passed a modified bill, H.R. 4986, that took into account the President’s
objections to H.R. 1585. The modifications incorporated into H.R. 4986 did not
affect the provisions discussed here, and for these and other unmodified parts of the
bill, H.Rept. 110-477 in effect serves as the conference report for H.R. 4986. H.R.

4986 was signed into law as P.L. 110-181 on January 28, 2008.


Section 1012 of the conference report is similar in some respects to the so-called
Title VIII legislation of the 1970s that required future Navy ships of certain kinds to
be nuclear-powered.44


44 The Title VIII legislation comprised Sections 801-804 of the FY1975 defense
authorization act (H.R. 14592/P.L. 93-365, August 5, 1974, 88 Stat. 408-409). The
legislation was codified at 10 USC 7291. Section 801 made it U.S. policy “to modernize
the strike forces of the United States Navy by the construction of nuclear-powered major
combatant vessels and to provide for an adequate industrial base for the research,
development, design, construction, operation, and maintenance for such vessels.” Section
801 also stated: “New construction major combatant vessels for the strike forces of the
United States Navy authorized subsequent to the date of enactment of this Act becomes law
[sic] shall be nuclear powered, except as provided in this title.” Section 802 defined the
term “major combatant vessels for the strike forces of the United States Navy.” Section 803
required the Secretary of Defense to submit a report to Congress each year, along with the
annual budget request, on the application of nuclear power to such ships. Section 804 stated
that “All requests for authorizations or appropriations from Congress” for such ships shall
be for construction of nuclear-powered versions of such ships “unless and until the President
has fully advised the Congress that construction of nuclear powered vessels for such purpose
is not in the national interest,” in which case the President is to provide, for Congress’
consideration, an alternate program of nuclear-powered ships, with appropriate design, cost,
and schedule information.
Title VIII was repealed by Section 810 of the FY1979 defense authorization act (S.
3486/P.L. 95-485, October 20, 1978, 92 Stat. 1623). Section 810 of that act replaced the
Title VIII legislation with a policy statement on Navy shipbuilding policy that did not
mandate the use of nuclear power for any Navy ships. Section 810, like the Title VIII
(continued...)

44 (...continued)
legislation, was codified at 10 USC 7291. It was subsequently recodified at 10 USC 7310,
pursuant to a law (H.R. 4623/P.L. 97-295 of October 12, 1982) that amended titles 10, 14,
37, and 38 to codify recent law. 10 USC 7310 was then repealed by Section 824(a)(8) of
the FY1994 defense authorization act (H.R. 2401/P.L. 103-160 of November 30, 1993).



Appendix. Section 130 of P.L. 109-163
Section 130 of the conference report (H.Rept. 109-360 of December 18, 2005)
on the FY2006 defense authorization act (H.R. 1815, P.L. 109-163 of January 6,
2006) required the Navy to submit a report by November 1, 2006, on alternative
propulsion methods for surface combatants and amphibious warfare ships. The Navy
submitted the report to Congress in January 2007. Section 130 states:
SEC. 130. REPORT ON ALTERNATIVE PROPULSION METHODS FOR
SURFACE COMBATANTS AND AMPHIBIOUS WARFARE SHIPS.
(a) ANALYSIS OF ALTERNATIVES. — The Secretary of the Navy shall
conduct an analysis of alternative propulsion methods for surface combatant
vessels and amphibious warfare ships of the Navy.
(b) REPORT. — The Secretary shall submit to the congressional defense
committees a report on the analysis of alternative propulsion systems carried out
under subsection (a). The report shall be submitted not later than November 1,

2006.


(c) MATTERS TO BE INCLUDED. — The report under subsection (b)
shall include the following:
(1) The key assumptions used in carrying out the analysis under subsection (a).
(2) The methodology and techniques used in conducting the analysis.
(3) A description of current and future technology relating to propulsion
that has been incorporated in recently-designed surface combatant vessels and
amphibious warfare ships or that is expected to be available for those types of
vessels within the next 10-to-20 years.
(4) A description of each propulsion alternative for surface combatant
vessels and amphibious warfare ships that was considered under the study and
an analysis and evaluation of each such alternative from an operational and
cost-effectiveness standpoint.
(5) A comparison of the life-cycle costs of each propulsion alternative.
(6) For each nuclear propulsion alternative, an analysis of when that nuclear
propulsion alternative becomes cost effective as the price of a barrel of crude oil
increases for each type of ship.
(7) The conclusions and recommendations of the study, including those
conclusions and recommendations that could impact the design of future ships
or lead to modifications of existing ships.
(8) The Secretary’s intended actions, if any, for implementation of the
conclusions and recommendations of the study.
(d) LIFE-CYCLE COSTS. — For purposes of this section, the term
“life-cycle costs” includes those elements of cost that would be considered for
a life-cycle cost analysis for a major defense acquisition program.