Ohio-class submarine

Short description: Class of US nuclear ballistic missile submarines

Ohio-class SSBN profile

missing name, during her commissioning ceremony in 1981.

Class overview
Name:|  Ohio class
Builders:|  General Dynamics Electric Boat[1]
Operators:|  United States Navy[1]
Preceded by:|  Script error: The function "sclass" does not exist.
Succeeded by:|

* Script error: The function "sclass" does not exist. (ballistic missile submarine variant)[2]
* Script error: The function "sclass" does not exist. (cruise missile submarine variant)[3][4]

Cost:|

$2 billion (late 1990s)[5]

($3.02 billion in 2024 dollars[6])
Built:|  1976–1997
In commission:|  1981–present
Planned:|  24
Completed:|  18
Cancelled:|  6
Active:|  18
General characteristics
Type:|  SSBN/SSGN (hull design SCB-304)[7]
Displacement:|

* 16,764 tonnes (16,499 long tons) surfaced[1][5]
* 18,750 tonnes (18,450 long tons) submerged[1]

Length:|  560 ft (170 m)[1]
Beam:|  42 ft (13 m)[1]
Draft:|  35.5 ft (10.8 m) maximum[8]
Propulsion:|

* 1× S8G PWR nuclear reactor[1]
* 2× geared turbines; 35,000 shp (26 MW)[9]
* 1x Fairbanks Morse auxiliary diesel[8]
* 1× 325 hp (242 kW) auxiliary motor
* 1 shaft with seven-bladed screw[8]

Speed:|

* 12 knots (22 km/h; 14 mph) surfaced[1]
* 20 knots (37 km/h; 23 mph) submerged (official)[1]
* 25 knots (46 km/h; 29 mph) submerged (reported)[1]

Range:|  Limited only by food supplies
Test depth:|  +800 ft (240 m)[10]
Complement:|  15 officers, 140 enlisted[1][5]
Sensors and
processing systems:|

* BQQ-6 passive bow-mounted array[1] (which includes BQS-13 fire control array)[11]
* BQR-19 navigation[1]
* TB-16[1] or BQR-23 towed array[11]
* BQR-25 conformal array[11]
* AN/BPS-15J[12]

Armament:|  4 × 21 inch (533 mm) Mark 48 torpedo tubes (Forward Compartment 4th level)
General characteristics (SSBN-726 to SSBN-733 from construction to refueling)
Armament:|  20[lower-alpha 1] × Trident I C4 SLBM with up to 8 MIRVed 100 ktTNT W76 nuclear warheads each, range 4,000 nmi (7,400 km; 4,600 mi)
General characteristics (SSBN-734 and subsequent hulls upon construction, SSBN-730 to SSBN-733 since refueling)
Armament:|  20[lower-alpha 1] × Trident II D5 SLBM with up to 12 MIRVed W76 or W88 (475 ktTNT) nuclear warheads each, range 6,100 nmi (11,300 km; 7,000 mi)
General characteristics (SSGN conversion)
Armament:|  22 tubes, each with 7 Tomahawk cruise missiles, totaling 154

The Ohio class of nuclear-powered submarines includes the United States Navy's 14 ballistic missile submarines (SSBNs) and its 4 cruise missile submarines (SSGNs). Each displacing 18,750 tons submerged, the Ohio-class boats are the largest submarines ever built for the U.S. Navy and are capable of carrying 24 Trident II ballistic missiles or 22 tubes with 7 BGM-109 Tomahawk cruise missiles apiece. They are also the third-largest submarines ever built, behind the Russian Navy's Soviet era 48,000-ton Script error: The function "sclass" does not exist., the last of which was retired in 2023,[lower-alpha 2][14] and 24,000-ton Script error: The function "sclass" does not exist..[15]

Like their predecessors the Script error: The function "sclass" does not exist. and Script error: The function "sclass" does not exist.es,[16] the Ohio-class SSBNs are part of the United States' nuclear-deterrent triad, along with U.S. Air Force strategic bombers and intercontinental ballistic missiles.[17] The 14 SSBNs together carry about half of U.S. active strategic thermonuclear warheads. Although the Trident missiles have no preset targets when the submarines go on patrol,[18]: 392 they can be given targets quickly, from the United States Strategic Command based in Nebraska,[19] using secure and constant radio communications links, including very low frequency systems.

All the Ohio-class submarines, except for  missing name, are named for U.S. states, which U.S. Navy tradition had previously reserved for battleships and later cruisers. The Ohio class is to be gradually replaced by the Script error: The function "sclass" does not exist. beginning in 2031.

## Contents

* 1 Description
* 2 History
* 2.1 SSBN/SSGN conversions
* 2.2 Missile tube reduction
* 2.3 Detailed cross-section
* 3 Boats in class
* 4 Replacement
* 5 In popular culture
* 6 See also
* 7 Notes
* 8 References
* 9 Bibliography
* 10 Further reading
* 11 External links

## Description

The Ohio-class submarine was designed for extended strategic deterrent patrols. Each submarine is assigned two complete crews, called the Blue crew and the Gold crew, each typically serving 70-to-90-day deterrent patrols. To decrease the time in port for crew turnover and replenishment, three large logistics hatches have been installed to provide large-diameter resupply and repair access. These hatches allow rapid transfer of supply pallets, equipment replacement modules, and machinery components, speeding up replenishment and maintenance of the submarines. Moreover, the "stealth" ability of the submarines was significantly improved over all previous ballistic-missile subs. Ohio was virtually undetectable in her sea trials in 1982, giving the U.S. Navy extremely advanced flexibility.[20]

USS Michigan (SSBN-727) at a dry-dock in November 2002, before its conversion to an SSGN

The class's design allows the boat to operate for about 15 years between major overhauls. These submarines are reported to be as quiet at their cruising speed of 20 knots (37 km/h; 23 mph) or more as the previous Script error: The function "sclass" does not exist.s at 6 knots (11 km/h; 6.9 mph), although exact information remains classified.[21] Fire control for their Mark 48 torpedoes is carried out by Mark 118 Mod 2 system,[11] while the Missile Fire Control system is a Mark 98.[11]

The Ohio-class submarines were constructed from sections of hull, with each four-deck section being 42 ft (13 m) in diameter.[8][11] The sections were produced at the General Dynamics Electric Boat facility, Quonset Point, Rhode Island, and then assembled at its shipyard at Groton, Connecticut.[8]

The US Navy has a total of 18 Ohio-class submarines which consist of 14 ballistic missile submarines (SSBNs), and four cruise missile submarines (SSGNs). The SSBN submarines provide the sea-based leg of the U.S. nuclear triad. Each SSBN submarine is armed with up to 20 Trident II submarine-launched ballistic missiles (SLBM). Each SSGN is capable of carrying 154 Tomahawk cruise missiles, plus a complement of Harpoon missiles to be fired through their torpedo tubes.

## History

The Ohio class was designed in the 1970s to carry the concurrently designed Trident submarine-launched ballistic missile. The first eight Ohio-class submarines were armed at first with 24 Trident I C4 SLBMs.[8] Beginning with the ninth Trident submarine,  missing name, the remaining boats were equipped with the larger, three-stage Trident II D5 missile.[11] The Trident I missile carries eight multiple independently targetable reentry vehicles, while the Trident II missile carries 12, in total delivering more destructive power than the Trident I missile and with greater accuracy. Starting with  missing name in 2000, the Navy began converting its remaining ballistic missile submarines armed with C4 missiles to carry D5 missiles. This task was completed in mid-2008. The first eight submarines had their home ports at Bangor, Washington, to replace the submarines carrying Polaris A3 missiles that were then being decommissioned. The remaining 10 submarines originally had their home ports at Kings Bay, Georgia, replacing the Poseidon and Trident Backfit submarines of the Atlantic Fleet.

### SSBN/SSGN conversions

Ohio-class SSGN profile USS Ohio being converted from an SSBN to an SSGN in March 2004

In 1994, the Nuclear Posture Review study determined that, of the 18 Ohio SSBNs the U.S. Navy would be operating in total, 14 would be sufficient for the strategic needs of the U.S. The decision was made to convert four Ohio-class boats into SSGNs capable of conducting conventional land attack and special operations. As a result, the four oldest boats of the class—Ohio, Michigan, Florida, and Georgia—progressively entered the conversion process in late 2002 and were returned to active service by 2008.[22] The boats could thereafter carry 154 Tomahawk cruise missiles and 66 special operations personnel, among other capabilities and upgrades.[22] The cost to refit the four boats was around US$1 billion (2008 dollars) per vessel.[23] During the conversion of these four submarines to SSGNs (see below), five of the remaining submarines,  missing name,  missing name,  missing name,  missing name, and  missing name, were transferred from Kings Bay to Bangor.[citation needed]

Artist's concept of an Ohio-class SSGN launching Tomahawk Land Attack Missiles

The conversion modified 22 of the 24 88-inch (2.2 m) diameter Trident missile tubes to contain large vertical launch systems, one configuration of which may be a cluster of seven Tomahawk cruise missiles. In this configuration, the number of cruise missiles carried could be a maximum of 154, the equivalent of what is typically deployed in a surface battle group. Other payload possibilities include new generations of supersonic and hypersonic cruise missiles, and Submarine Launched Intermediate Range Ballistic Missiles,[citation needed] unmanned aerial vehicles, the ADM-160 MALD, sensors for antisubmarine warfare or intelligence, surveillance, and reconnaissance missions, counter mine warfare payloads such as the AN/BLQ-11 Long Term Mine Reconnaissance System, and the broaching universal buoyant launcher and stealthy affordable capsule system specialized payload canisters.[citation needed]

The helm of the Ohio-class guided-missile submarine, USS Florida (SSGN-728), in March 2010

The missile tubes also have room for stowage canisters that can extend the forward deployment time for special forces. The other two Trident tubes are converted to swimmer lockout chambers. For special operations, the Dry Combat Submersible (which replaced the Advanced SEAL Delivery System), as well as the dry deck shelter, can be mounted on the lockout chamber and the boat will be able to host up to 66 special-operations sailors or Marines, such as Navy SEALs, or USMC MARSOC teams. Improved communications equipment installed during the upgrade allows the SSGNs to serve as a forward-deployed, clandestine Small Combatant Joint Command Center.[24]

On 26 September 2002, the Navy awarded General Dynamics Electric Boat a US$442.9 million contract to begin the first phase of the SSGN submarine conversion program. Those funds covered only the initial phase of conversion for the first two boats on the schedule. Advance procurement was funded at $355 million in fiscal year 2002, $825 million in the FY 2003 budget and, through the five-year defense budget plan, at $936 million in FY 2004, $505 million in FY 2005, and $170 million in FY 2006. Thus, the total cost to refit the four boats is just under $700 million per vessel.[citation needed]

In November 2002, Ohio entered a dry-dock, beginning her 36-month refueling and missile-conversion overhaul. Electric Boat announced on 9 January 2006 that the conversion had been completed. The converted Ohio rejoined the fleet in February 2006, followed by Florida in April 2006. The converted Michigan was delivered in November 2006. The converted Ohio went to sea for the first time in October 2007. Georgia returned to the fleet in March 2008 at Kings Bay.[25] These four SSGNs are expected to remain in service until about 2023–2026. At that point, their capabilities will be replaced with Virginia Payload Module-equipped Script error: The function "sclass" does not exist..[26]

In 2011, Ohio-class submarines carried out 28 deterrent patrols. Each patrol lasts around 70 days. Four boats are on station ("hard alert") in designated patrol areas at any given time.[27] From January to June 2014, Pennsylvania carried out a 140-day-long patrol, the longest to date.[28]

### Missile tube reduction

As part of the New START treaty, four tubes on each SSBN were deactivated in 2017, reducing the number of missiles to 20 per boat.[29]

### Detailed cross-section

Line drawing of the Ohio class in its original SSBN configuration. (1) Sonar dome, (2) Main ballast tanks, (3) Computer room, (4) Integrated radio room, (5) Sonar room, (6) Command and control center, (7) Navigation center, (8) Missile control center, (9) Engine room, (10) Reactor compartment, (11) Auxiliary machinery room no. 2, (12) Crew's berthing, (13) Auxiliary machinery room no. 1, (14) Torpedo room, (15) Wardroom, (16) Chief petty officer quarters, (17) Missile compartment

## Boats in class

List of Ohio-class submarines  Name  | Hull number[lower-greek 1] | Ordered  | Laid down  | Launched  | Delivered  | Commissioned  | Decommissioned  | Homeport [lower-greek 2] | Service life
(status) | Ref.

|
|
|
|
|
|
|
|
|
|

Ohio | SSGN-726  | 1 July 1974 | 10 April 1976 | 7 April 1979 | 28 October 1981 | 11 November 1981  | Proposed 2026[30] | Naval Base Kitsap, Washington | 44 years, 65 days
(in active service) | [31]
Michigan | SSGN-727  | 28 February 1975 | 4 April 1977 | 26 April 1980 | 28 August 1982 | 11 September 1982  | Proposed 2028[32] | Naval Base Kitsap, Washington | 43 years, 126 days
(in active service) | [33]
Florida | SSGN-728  | 28 February 1975 | 19 January 1981 | 14 November 1981 | 17 May 1983 | 18 June 1983  | Proposed 2026[34] | Naval Submarine Base Kings Bay, Georgia | 42 years, 211 days
(in active service) | [35]
Georgia | SSGN-729  | 20 February 1976 | 7 April 1979 | 6 November 1982 | 17 January 1984 | 11 February 1984  | Proposed 2028[36] | Naval Submarine Base Kings Bay, Georgia | 41 years, 338 days
(in active service) | [37]
Henry M. Jackson
(ex Rhode Island) | SSBN-730  | 6 June 1977 | 19 November 1981 | 15 October 1983 | 11 September 1984 | 6 October 1984  | Proposed 2027[38] | Naval Base Kitsap, Washington | 41 years, 101 days
(in active service) | [39]
Alabama | SSBN-731  | 27 February 1978 | 27 August 1981 | 19 May 1984 | 23 April 1985 | 25 May 1985  | Proposed 2028[40] | Naval Base Kitsap, Washington | 40 years, 235 days
(in active service) | [41]
Alaska | SSBN-732  | 27 February 1978 | 9 March 1983 | 12 January 1985 | 26 November 1985 | 25 January 1986  |  | Naval Submarine Base Kings Bay, Georgia | 39 years, 355 days
(in active service) | [42]
Nevada | SSBN-733  | 7 January 1981 | 8 August 1983 | 14 September 1985 | 7 August 1986 | 16 August 1986  |  | Naval Base Kitsap, Washington | 39 years, 152 days
(in active service) | [43]
Tennessee | SSBN-734  | 7 January 1982 | 9 June 1986 | 13 December 1986 | 18 November 1988 | 17 December 1988  |  | Naval Submarine Base Kings Bay, Georgia | 37 years, 29 days
(in active service) | [44]
Pennsylvania | SSBN-735  | 29 November 1982 | 2 March 1987 | 23 April 1988 | 22 August 1989 | 9 September 1989  |  | Naval Base Kitsap, Washington | 36 years, 128 days
(in active service) | [45]
West Virginia | SSBN-736  | 21 November 1983 | 18 December 1987 | 14 October 1989 | 10 September 1990 | 20 October 1990  |  | Naval Submarine Base Kings Bay, Georgia | 35 years, 87 days
(in active service) | [46]
Kentucky | SSBN-737  | 13 August 1985 | 18 December 1987 | 11 August 1990 | 27 June 1991 | 13 July 1991  |  | Naval Base Kitsap, Washington | 34 years, 186 days
(in active service) | [47]
Maryland | SSBN-738  | 14 March 1986 | 22 April 1986 | 10 August 1991 | 31 May 1992 | 13 June 1992  |  | Naval Submarine Base Kings Bay, Georgia | 33 years, 216 days
(in active service) | [48]
Nebraska | SSBN-739  | 26 May 1987 | 6 July 1987 | 15 August 1992 | 18 June 1993 | 10 July 1993  |  | Naval Base Kitsap, Washington | 32 years, 189 days
(in active service) | [49]
Rhode Island | SSBN-740  | 15 January 1988 | 15 September 1988 | 17 July 1993 | 22 June 1994 | 9 July 1994  |  | Naval Submarine Base Kings Bay, Georgia | 31 years, 190 days
(in active service) | [50]
Maine | SSBN-741  | 5 October 1988 | 3 July 1990 | 16 July 1994 | 21 June 1995 | 29 July 1995  |  | Naval Base Kitsap, Washington | 30 years, 180 days
(in active service) | [51]
Wyoming | SSBN-742  | 18 October 1989 | 8 August 1991 | 15 July 1995 | 20 June 1996 | 13 July 1996  |  | Naval Submarine Base Kings Bay, Georgia | 29 years, 186 days
(in active service) | [52]
Louisiana | SSBN-743  | 19 December 1990 | 23 October 1992 | 27 July 1996 | 14 August 1997 | 6 September 1997  |  | Naval Base Kitsap, Washington | 28 years, 131 days
(in active service) | [53]

1. ↑ Hull numbers beginning with 'SSGN' are guided-missile submarines. Those with 'SSBN' are ballistic missile submarines.
2. ↑ Boats based at Naval Base Kitsap, Washington are operated by the U.S. Pacific Fleet, while boats based at Naval Submarine Base Kings Bay, Georgia are operated by U.S. Fleet Forces Command, (formerly the U.S. Atlantic Fleet).

## Replacement

Main article: Engineering:Columbia-class submarine

The U.S. Department of Defense anticipated a continued need for a sea-based strategic nuclear force.[citation needed] The first of the current Ohio-class SSBNs was expected to be retired by 2029,[citation needed] so the replacement submarine would need to be seaworthy by that time. A replacement was expected to cost over $4 billion per unit compared to Ohio's $2 billion.[5] The U.S. Navy explored two options. The first option was a variant of the Script error: The function "sclass" does not exist. nuclear-powered attack submarines. The second option was a dedicated SSBN, either with a new hull or based on an overhaul of the current Ohio class.[citation needed]

With the cooperation of both Electric Boat and Newport News Shipbuilding, in 2007, the U.S. Navy began a cost-control study.[citation needed] Then in December 2008, the U.S. Navy awarded Electric Boat a contract for the missile compartment design of the Ohio-class replacement, worth up to $592 million. Newport News is expected to receive close to 4% of that project. In April 2009, U.S. Defense Secretary Robert M. Gates stated that the U.S. Navy was expected to begin such a program in 2010.[5] The new vessel was scheduled to enter the design phase by 2014. If a new hull design was to be used, the program needed to be initiated by 2016 to meet the 2029 deadline.[citation needed][needs update]

The Columbia class was officially designated on 14 December 2016, by Secretary of the Navy Ray Mabus, and the lead submarine will be  missing name.[54] The Navy wants to procure the first Columbia-class boat in FY2021,[55] though it is not expected to enter service until 2031.[56][57]

In 2020, Navy officials first publicly discussed the idea of extending the lives of select Ohio-class boats at the Naval Submarine League's 2020 conference. During the 2022 conference, Rear Admiral Scott Pappano, the program executive officer for strategic submarines, and Rear Admiral Douglas G. Perry, the director of undersea warfare on the Chief of Naval Operations' staff, discussed the Columbia-class program, and also touched on the possibility of finding Ohio-class boats that had sufficient remaining nuclear fuel and were in good enough material state to be given a further extension to their lives.[58]

## In popular culture

As ballistic-missile submarines, the Ohio class has occasionally been portrayed in fiction books and films.

* Tom Clancy wrote Ohio-class submarines into several novels,[59] such as  missing name in The Sum of All Fears (1991).[60]
* The fictional USS Montana is featured in the 1989 film The Abyss.[61]
* missing name is the setting for the 1995 submarine film Crimson Tide.[62]
* The fictional ballistic missile submarine USS Colorado (SSBN-753) is the primary setting for the ABC television series Last Resort.[63]
* missing name is featured in Season 1, Episode 13 of the American television series The Brave.[64]

## See also

* List of submarine classes of the United States Navy
* List of submarines of the United States Navy
* List of submarine classes in service
* Submarines in the United States Navy
* Submarine-launched ballistic missile

## Notes

1. ↑ 1.0 1.1 Each hull initially started out with 24 missile tubes. This number was reduced to 20 in 2017 to comply with the New START treaty
2. ↑ The last boat of the Typhoon class,  missing name, was confirmed by Russia, in February 2023, as deactivated.[13]

## References

1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 "Ohio-class SSGN-726 Overview". Federation of American Scientists. https://fas.org/nuke/guide/usa/slbm/ssbn-726.htm.
2. ↑ "New U.S. Navy Nuclear Sub Class to Be Named for D.C.". 28 July 2016. https://news.usni.org/2016/07/28/ohio-replacement-sub-class-named-d-c.
3. ↑ "Navy Selects Virginia Payload Module Design Concept". 4 November 2013. https://news.usni.org/2013/11/04/navy-selects-virginia-payload-module-design-concept.
4. ↑ "The Strategic Imperative of Virginia Block VI Submarines". 6 August 2024. https://strongernavy.org/the-strategic-imperative-of-virginia-block-vi-submarines/.
5. ↑ 5.0 5.1 5.2 5.3 5.4 Frost, Peter. "Newport News contract awarded". Daily Press. http://www.dailypress.com/news/dp-local_subs_0424apr24,0,5810806.story.
6. ↑ Thomas, Ryland; Williamson, Samuel H. (2020). "What Was the U.S. GDP Then?". MeasuringWorth. http://www.measuringworth.com/datasets/usgdp/. Retrieved September 22, 2020 United States Gross Domestic Product deflator figures follow the Measuring Worth series.
7. ↑ Adcock, Al. (1993). U.S. Ballistic Missile Submarines. Carrolltown, Texas: Squadron Signal. pp. 4, 40. ISBN 978-0-89747-293-7.
8. ↑ 8.0 8.1 8.2 8.3 8.4 8.5 Adcock, Al (1993). U.S. Ballistic Missile Submarines. Carrolltown, Texas: Squadron Signal. p. 40. ISBN 978-0-89747-293-7.
9. ↑ Appendices: Commission on the Organization of the Government for the Conduct of Foreign Policy. IV: Appendix K: Adequacy of Current Organization: Defense and Arms Control. U.S. Government Printing Office. June 1975. pp. 177–179. https://books.google.com/books?id=e_cGt811AcQC. Retrieved 14 January 2023. "The projected boat would have a 30,000 ton displacement and would be powered by two 30,000 shp reactors... ...both the submarine and the missile grew incrementally in size to their current dimensions — the missile by six inches in diameter and four to five feet in length; the submarine by 5,000 shp in reactor output..."
10. ↑ "How deep can a submarine dive?". navalpost.com. 26 April 2021. https://navalpost.com/how-deep-can-a-submarine-dive/.
11. ↑ 11.0 11.1 11.2 11.3 11.4 11.5 11.6 Adcock, Al (1993). U.S. Ballistic Missile Submarines. Carrolltown, Texas: Squadron Signal. p. 41. ISBN 978-0-89747-293-7.
12. ↑ [1] Navy.mil
13. ↑ Cole, Brendan (2023-02-06). "Russia loses world's largest nuclear submarine". Newsweek. https://www.newsweek.com/donskoy-submarine-russia-nuclear-donskoy-1779194. Retrieved 2023-11-20.
14. ↑ "941 Typhoon". Federation of American Scientists. Fas.org. 25 August 2000. https://fas.org/nuke/guide/russia/slbm/941.htm.
15. ↑ "935 Borei". Federation of American Scientists. Fas.org. 13 July 2000. https://fas.org/nuke/guide/russia/slbm/935.htm.
16. ↑ Chant 2005, p. 33.
17. ↑ Chinworth 2006, p. 2.
18. ↑ Croddy, Eric A.; Wirtz, James J., eds (2005) (in en). Weapons of Mass Destruction: Nuclear weapons. ABC-CLIO. ISBN 978-1-85109-490-5. https://books.google.com/books?id=ZzlNgS70OHAC.
19. ↑ Genat & Genat 1997, p. 39.
20. ↑ D. Douglas Dalgleish and Larry Schweikart, Trident. Carbondale, Illinois: Southern Illinois University Press. 1984.
21. ↑ Lee, T. W. (2008-12-30) (in en). Military Technologies of the World [2 volumes]. ABC-CLIO. p. 344. ISBN 978-0-275-99536-2. https://books.google.com/books?id=-nrZqzQs3jMC&q=Ohio+class+submarine+noise&pg=PA343.
22. ↑ 22.0 22.1 "Guided Missile Submarines – SSGN". U.S. Navy. Navy.mil. 10 November 2011. http://www.navy.mil/navydata/fact_display.asp?cid=4100&tid=300&ct=4.
23. ↑ O'Rourke, Ronald (22 May 2008). "Navy Trident Submarine Conversion (SSGN) Program: Background and Issues for Congress". Congressional Research Service. https://fas.org/sgp/crs/weapons/RS21007.pdf.
24. ↑ "USS Ohio Returns To Service As Navy's First SSGN". Electric Boat News (General Dynamics Electric Boat). February 2006. http://www.gdeb.com/news/ebnews/ebnews0206.pdf.
25. ↑ "Navy Marks USS Georgia's Return To Service". CBS 4 News Jacksonville. http://atlanta.navyleague.us/.
26. ↑ O'Rourke, Ronald (1 March 2012). "CRS-RL32418 Navy Virginia (SSN-774) Class Attack Submarine Procurement: Background and Issues for Congress". Open CRS. https://opencrs.com/document/RL32418/2012-03-01/?26752.
27. ↑ Kristensen, Hans M. (December 2012). "Trimming Nuclear Excess: Options for Further Reductions of U.S. and Russian Nuclear Forces Special Report No 5". https://fas.org/programs/ssp/nukes/publications1/TrimmingNuclearExcess.pdf.
28. ↑ Arendes, Ahron (30 June 2014). "USS Pennsylvania Sets Patrol Record". http://www.military.com/daily-news/2014/06/30/uss-pennsylvania-sets-patrol-record.html.
29. ↑ Hans M. Kristensen (13 January 2018). "New Data Shows Detail About Final Phase of US New START Treaty Reductions". fas.org. https://fas.org/blogs/security/2018/01/new-start-full-data/.
30. ↑ "Report to Congress on the Annual Long-Range Plan for Construction of Naval Vessels for Fiscal Year 2025". media.defense.gov. March 2024. https://s3.documentcloud.org/documents/24487775/rtc-pb25-shipbuilding_plan.pdf.
31. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Ohio (SSGN 726)"]. Naval Vessel Register. Navy.mil. 27 October 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
32. ↑ "Report to Congress on the Annual Long-Range Plan for Construction of Naval Vessels for Fiscal Year 2025". media.defense.gov. March 2024. https://s3.documentcloud.org/documents/24487775/rtc-pb25-shipbuilding_plan.pdf.
33. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Michigan (SSGN 727)"]. Naval Vessel Register. Navy.mil. 24 February 2006. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
34. ↑ "Report to Congress on the Annual Long-Range Plan for Construction of Naval Vessels for Fiscal Year 2025". media.defense.gov. March 2024. https://s3.documentcloud.org/documents/24487775/rtc-pb25-shipbuilding_plan.pdf.
35. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Florida (SSGN 728)"]. Naval Vessel Register. Navy.mil. 13 September 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
36. ↑ "Report to Congress on the Annual Long-Range Plan for Construction of Naval Vessels for Fiscal Year 2025". media.defense.gov. March 2024. https://s3.documentcloud.org/documents/24487775/rtc-pb25-shipbuilding_plan.pdf.
37. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Georgia (SSGN 729)"]. Naval Vessel Register. Navy.mil. 17 December 2007. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
38. ↑ "Report to Congress on the Annual Long-Range Plan for Construction of Naval Vessels for Fiscal Year 2025". media.defense.gov. March 2024. https://s3.documentcloud.org/documents/24487775/rtc-pb25-shipbuilding_plan.pdf.
39. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Henry M. Jackson (SSBN 730)"]. Naval Vessel Register. Navy.mil. 27 October 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
40. ↑ "Report to Congress on the Annual Long-Range Plan for Construction of Naval Vessels for Fiscal Year 2025". media.defense.gov. March 2024. https://s3.documentcloud.org/documents/24487775/rtc-pb25-shipbuilding_plan.pdf.
41. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Alabama (SSBN 731)"]. Naval Vessel Register. Navy.mil. 27 October 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
42. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Alaska (SSBN 732)"]. Naval Vessel Register. Navy.mil. 27 October 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
43. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Nevada (SSBN 733)"]. Naval Vessel Register. Navy.mil. 27 October 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
44. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Tennessee (SSBN 734)"]. Naval Vessel Register. Navy.mil. 23 August 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
45. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Pennsylvania (SSBN 735)"]. Naval Vessel Register. Navy.mil. 27 October 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
46. ↑ [Script error: No such module "Naval Vessel Register URL". "USS West Virginia (SSBN 736)"]. Naval Vessel Register. Navy.mil. 22 August 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
47. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Kentucky (SSBN 737)"]. Naval Vessel Register. Navy.mil. 27 October 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
48. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Maryland (SSBN 738)"]. Naval Vessel Register. Navy.mil. 27 October 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
49. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Nebraska (SSBN 739)"]. Naval Vessel Register. Navy.mil. 27 October 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
50. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Rhode Island (SSBN 740)"]. Naval Vessel Register. Navy.mil. 27 October 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
51. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Maine (SSBN 741)"]. Naval Vessel Register. Navy.mil. 23 August 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
52. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Wyoming (SSBN 742)"]. Naval Vessel Register. Navy.mil. 23 August 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
53. ↑ [Script error: No such module "Naval Vessel Register URL". "USS Louisiana (SSBN 743)"]. Naval Vessel Register. Navy.mil. 26 July 2011. Script error: No such module "Naval Vessel Register URL"..Script+error:+No+such+module+"Naval+Vessel+Register+URL".&rfr_id=info:sid/en.wikibooks.org:Engineering:Ohio-class_submarine">
54. ↑ "SECNAV Mabus to Officially Designate First ORP Boat USS Columbia (SSBN-826)". 13 December 2016. https://news.usni.org/2016/12/13/secnav-mabus-to-officially-designate-first-orp-boat-uss-district-of-columbia-ssbn-826.
55. ↑ "Report on the Columbia-class Nuclear Ballistic Missile Submarine Program". 20 May 2020. https://news.usni.org/2020/05/19/report-columbia-class-nuclear-ballistic-missile-submarine-program.
56. ↑ "Nuclear Posture Review - Final Report". media.defense.gov. February 2018. https://media.defense.gov/2018/Feb/02/2001872886/-1/-1/1/2018-NUCLEAR-POSTURE-REVIEW-FINAL-REPORT.PDF.
57. ↑ "SENEDIA Defense Innovation Days". 5 September 2014. http://www.senedia.org/wp-content/uploads/2014/09/Ohio-Replacement-Program-Defense-Innovation-Days-5-Sep-2014-Final.pdf.
58. ↑ "US Navy wants to avoid shortfall of nuke-armed subs in 2030s". defensenews.com. 2 November 2022. https://www.defensenews.com/naval/2022/11/02/us-navy-wants-to-avoid-shortfall-of-nuke-armed-subs-in-2030s/.
59. ↑ Terdoslavich, William (2006). The Jack Ryan Agenda: Policy and Politics in the Novels of Tom Clancy: An Unauthorized Analysis. Forge Books. p. 95. ISBN 0-7653-1248-4. https://books.google.com/books?id=mUpzsTwmGVAC&q=ohio&pg=PA95.
60. ↑ Akers, Greg. "More patriot games played in Jack Ryan." (in en). https://www.memphisflyer.com/memphis/more-patriot-games-played-in-jack-ryan/Content?oid=3593294.
61. ↑ "Usnavymuseum.org". http://www.usnavymuseum.org/pdf/teacher_help-10.pdf.
62. ↑ "Crimson Tide". Internet Movie Database. https://www.imdb.com/title/tt0112740/.
63. ↑ "Last Resort Co-Creator Explains Submarine Story Development". 27 September 2012. http://www.thedeadbolt.com/1003027711-last-resort-co-creator-explains-submarine-story-development.html.
64. ↑ Roots, Kimberly (29 January 2018). "The Brave Finale Recap: Man Down!". TVLine. http://tvline.com/2018/01/29/the-brave-finale-recap-season-1-episode-13-preach-hurt/.

## Bibliography

* Chant, Chris (2005). Submarine Warfare Today. Leicester, United Kingdom: Silverdale Books. ISBN 1-84509-158-2. OCLC 156749009.
* Chinworth, William C. (15 March 2006). The Future of the Ohio Class Submarine (PDF) (Master of Strategic Studies thesis). Carlisle Barracks, Pennsylvania: U.S. Army War College. OCLC 70852911. Archived from the original (PDF) on 13 August 2011.
* Genat, Robert; Genat, Robin (1997). Modern U.S. Navy Submarines. Osceola, Wisconsin: Motorbooks International. ISBN 0-7603-0276-6. OCLC 36713050. https://archive.org/details/modernusnavysubm00gena.

## Further reading

* Dalgleish, D. Douglas; Schweikart, Larry (1984). Trident. Carbondale, IL: Southern Illinois University Press.
* Hutchinson, Robert (2006). Jane's Submarines War Beneath the Waves: From 1776 to the Present Day. New Line Books. ISBN 978-1-59764-181-4.
* O'Rourke, Ronald. "Navy Columbia (SSBN-826) Class Ballistic Missile Submarine Program: Background and Issues for Congress". Congressional Research Service. https://www.everycrsreport.com/reports/R41129.html.

## External links

* "USS Kentucky SSBN 737 Ballistic Missile Submarine" on YouTube
* Chonday video: The Largest Submarine in the U.S. Navy

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