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Ohio-class submarine

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Ohio-class submarine

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 Typhoon class, the last of which was retired in 2023, and 24,000-ton Borei class. Like their predecessors the Benjamin Franklin and Lafayette classes, 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. 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, they can be given targets quickly, from the United States Strategic Command based in Nebraska, using secure and constant radio communications links, including very low frequency systems. All the Ohio-class submarines, except for USS Henry M. Jackson, 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 Columbia class beginning in 2031.

Infobox

Name
Ohio class
Builders
General Dynamics Electric Boat
Operators
United States Navy
Preceded by
Benjamin Franklin class
Succeeded by
Columbia class (ballistic missile submarine variant) Virginia class (cruise missile submarine variant)
Cost
$2 billion (late 1990s) ($3.62 billion in 2024 dollars)
Built
1976–1997
In commission
1981–present
Planned
24
Completed
18
Canceled
6
Active
18
Type
SSBN/SSGN (hull design SCB-304)
Displacement
16,764 tonnes (16,499 long tons) surfaced 18,750 tonnes (18,450 long tons) submerged
Length
560 ft (170 m)
Beam
42 ft (13 m)
Draft
35.5 ft (10.8 m) maximum
Propulsion
1× S8G PWR nuclear reactor 2× geared turbines; 35,000 shp (26 MW) 1x Fairbanks Morse auxiliary diesel 1× 325 hp (242 kW) auxiliary motor 1 shaft with seven-bladed screw
Speed
12 knots (22 km/h; 14 mph) surfaced 20 knots (37 km/h; 23 mph) submerged (official) 25 knots (46 km/h; 29 mph) submerged (reported)
Range
Limited only by food supplies
Test depth
800 ft (240 m)
Complement
15 officers, 140 enlisted
Sensors &processing systems
BQQ-6 passive bow-mounted array (which includes BQS-13 fire control array) BQR-19 navigation TB-16 or BQR-23 towed array BQR-25 conformal array AN/BPS-15J
Armament
22 tubes, each with 7 Tomahawk cruise missiles, totaling 154

Tables

List of Ohio-class submarines · Boats in class
Ohio
Ohio
Name
Ohio
Hull number
SSGN-726
Ordered
1 July 1974
Laid down
10 April 1976
Launched
7 April 1979
Delivered
28 October 1981
Commissioned
11 November 1981
Decommissioned
Proposed 2026
Homeport
Naval Base Kitsap, Washington
Service life(status)
44 years, 30 days(in active service)
Michigan
Michigan
Name
Michigan
Hull number
SSGN-727
Ordered
28 February 1975
Laid down
4 April 1977
Launched
26 April 1980
Delivered
28 August 1982
Commissioned
11 September 1982
Decommissioned
Proposed 2028
Homeport
Naval Base Kitsap, Washington
Service life(status)
43 years, 91 days(in active service)
Florida
Florida
Name
Florida
Hull number
SSGN-728
Ordered
28 February 1975
Laid down
19 January 1981
Launched
14 November 1981
Delivered
17 May 1983
Commissioned
18 June 1983
Decommissioned
Proposed 2026
Homeport
Naval Submarine Base Kings Bay, Georgia
Service life(status)
42 years, 176 days(in active service)
Georgia
Georgia
Name
Georgia
Hull number
SSGN-729
Ordered
20 February 1976
Laid down
7 April 1979
Launched
6 November 1982
Delivered
17 January 1984
Commissioned
11 February 1984
Decommissioned
Proposed 2028
Homeport
Naval Submarine Base Kings Bay, Georgia
Service life(status)
41 years, 303 days(in active service)
Henry M. Jackson(ex Rhode Island)
Henry M. Jackson(ex Rhode Island)
Name
Henry M. Jackson(ex Rhode Island)
Hull number
SSBN-730
Ordered
6 June 1977
Laid down
19 November 1981
Launched
15 October 1983
Delivered
11 September 1984
Commissioned
6 October 1984
Decommissioned
Proposed 2027
Homeport
Naval Base Kitsap, Washington
Service life(status)
41 years, 66 days(in active service)
Alabama
Alabama
Name
Alabama
Hull number
SSBN-731
Ordered
27 February 1978
Laid down
27 August 1981
Launched
19 May 1984
Delivered
23 April 1985
Commissioned
25 May 1985
Decommissioned
Proposed 2028
Homeport
Naval Base Kitsap, Washington
Service life(status)
40 years, 200 days(in active service)
Alaska
Alaska
Name
Alaska
Hull number
SSBN-732
Ordered
27 February 1978
Laid down
9 March 1983
Launched
12 January 1985
Delivered
26 November 1985
Commissioned
25 January 1986
Homeport
Naval Submarine Base Kings Bay, Georgia
Service life(status)
39 years, 320 days(in active service)
Nevada
Nevada
Name
Nevada
Hull number
SSBN-733
Ordered
7 January 1981
Laid down
8 August 1983
Launched
14 September 1985
Delivered
7 August 1986
Commissioned
16 August 1986
Homeport
Naval Base Kitsap, Washington
Service life(status)
39 years, 117 days(in active service)
Tennessee
Tennessee
Name
Tennessee
Hull number
SSBN-734
Ordered
7 January 1982
Laid down
9 June 1986
Launched
13 December 1986
Delivered
18 November 1988
Commissioned
17 December 1988
Homeport
Naval Submarine Base Kings Bay, Georgia
Service life(status)
36 years, 359 days(in active service)
Pennsylvania
Pennsylvania
Name
Pennsylvania
Hull number
SSBN-735
Ordered
29 November 1982
Laid down
2 March 1987
Launched
23 April 1988
Delivered
22 August 1989
Commissioned
9 September 1989
Homeport
Naval Base Kitsap, Washington
Service life(status)
36 years, 93 days(in active service)
West Virginia
West Virginia
Name
West Virginia
Hull number
SSBN-736
Ordered
21 November 1983
Laid down
18 December 1987
Launched
14 October 1989
Delivered
10 September 1990
Commissioned
20 October 1990
Homeport
Naval Submarine Base Kings Bay, Georgia
Service life(status)
35 years, 52 days(in active service)
Kentucky
Kentucky
Name
Kentucky
Hull number
SSBN-737
Ordered
13 August 1985
Laid down
18 December 1987
Launched
11 August 1990
Delivered
27 June 1991
Commissioned
13 July 1991
Homeport
Naval Base Kitsap, Washington
Service life(status)
34 years, 151 days(in active service)
Maryland
Maryland
Name
Maryland
Hull number
SSBN-738
Ordered
14 March 1986
Laid down
22 April 1986
Launched
10 August 1991
Delivered
31 May 1992
Commissioned
13 June 1992
Homeport
Naval Submarine Base Kings Bay, Georgia
Service life(status)
33 years, 181 days(in active service)
Nebraska
Nebraska
Name
Nebraska
Hull number
SSBN-739
Ordered
26 May 1987
Laid down
6 July 1987
Launched
15 August 1992
Delivered
18 June 1993
Commissioned
10 July 1993
Homeport
Naval Base Kitsap, Washington
Service life(status)
32 years, 154 days(in active service)
Rhode Island
Rhode Island
Name
Rhode Island
Hull number
SSBN-740
Ordered
15 January 1988
Laid down
15 September 1988
Launched
17 July 1993
Delivered
22 June 1994
Commissioned
9 July 1994
Homeport
Naval Submarine Base Kings Bay, Georgia
Service life(status)
31 years, 155 days(in active service)
Maine
Maine
Name
Maine
Hull number
SSBN-741
Ordered
5 October 1988
Laid down
3 July 1990
Launched
16 July 1994
Delivered
21 June 1995
Commissioned
29 July 1995
Homeport
Naval Base Kitsap, Washington
Service life(status)
30 years, 145 days(in active service)
Wyoming
Wyoming
Name
Wyoming
Hull number
SSBN-742
Ordered
18 October 1989
Laid down
8 August 1991
Launched
15 July 1995
Delivered
20 June 1996
Commissioned
13 July 1996
Homeport
Naval Submarine Base Kings Bay, Georgia
Service life(status)
29 years, 151 days(in active service)
Louisiana
Louisiana
Name
Louisiana
Hull number
SSBN-743
Ordered
19 December 1990
Laid down
23 October 1992
Launched
27 July 1996
Delivered
14 August 1997
Commissioned
6 September 1997
Homeport
Naval Base Kitsap, Washington
Service life(status)
28 years, 96 days(in active service)
Name
Hull number
Ordered
Laid down
Launched
Delivered
Commissioned
Decommissioned
Homeport
Service life(status)
Ref.
Ohio
SSGN-726
1 July 1974
10 April 1976
7 April 1979
28 October 1981
11 November 1981
Proposed 2026
Naval Base Kitsap, Washington
44 years, 30 days(in active service)
Michigan
SSGN-727
28 February 1975
4 April 1977
26 April 1980
28 August 1982
11 September 1982
Proposed 2028
Naval Base Kitsap, Washington
43 years, 91 days(in active service)
Florida
SSGN-728
28 February 1975
19 January 1981
14 November 1981
17 May 1983
18 June 1983
Proposed 2026
Naval Submarine Base Kings Bay, Georgia
42 years, 176 days(in active service)
Georgia
SSGN-729
20 February 1976
7 April 1979
6 November 1982
17 January 1984
11 February 1984
Proposed 2028
Naval Submarine Base Kings Bay, Georgia
41 years, 303 days(in active service)
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
Naval Base Kitsap, Washington
41 years, 66 days(in active service)
Alabama
SSBN-731
27 February 1978
27 August 1981
19 May 1984
23 April 1985
25 May 1985
Proposed 2028
Naval Base Kitsap, Washington
40 years, 200 days(in active service)
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, 320 days(in active service)
Nevada
SSBN-733
7 January 1981
8 August 1983
14 September 1985
7 August 1986
16 August 1986
Naval Base Kitsap, Washington
39 years, 117 days(in active service)
Tennessee
SSBN-734
7 January 1982
9 June 1986
13 December 1986
18 November 1988
17 December 1988
Naval Submarine Base Kings Bay, Georgia
36 years, 359 days(in active service)
Pennsylvania
SSBN-735
29 November 1982
2 March 1987
23 April 1988
22 August 1989
9 September 1989
Naval Base Kitsap, Washington
36 years, 93 days(in active service)
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, 52 days(in active service)
Kentucky
SSBN-737
13 August 1985
18 December 1987
11 August 1990
27 June 1991
13 July 1991
Naval Base Kitsap, Washington
34 years, 151 days(in active service)
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, 181 days(in active service)
Nebraska
SSBN-739
26 May 1987
6 July 1987
15 August 1992
18 June 1993
10 July 1993
Naval Base Kitsap, Washington
32 years, 154 days(in active service)
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, 155 days(in active service)
Maine
SSBN-741
5 October 1988
3 July 1990
16 July 1994
21 June 1995
29 July 1995
Naval Base Kitsap, Washington
30 years, 145 days(in active service)
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, 151 days(in active service)
Louisiana
SSBN-743
19 December 1990
23 October 1992
27 July 1996
14 August 1997
6 September 1997
Naval Base Kitsap, Washington
28 years, 96 days(in active service)

References

  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 Submarin
  3. Each hull initially started out with 24 missile tubes. This number was reduced to 20 in 2017 to comply with the New STAR
  4. The last boat of the Typhoon class, Dmitry Donskoy, was confirmed by Russia, in February 2023, as deactivated.
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