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	USS John C. Calhoun (SSBN-630) entering Holy Loch, Scotland on completion of the thousandth Polaris nuclear deterrent patrol, 18 May 1972.
Class overview
Builders	General Dynamics Electric Boat; Mare Island Naval Shipyard; Portsmouth Naval Shipyard; Newport News Shipbuilding and Drydock Company;
Operators	United States Navy
Preceded by	Lafayette class
Succeeded by	Benjamin Franklin class
Built	1962–1964
In commission	1964–1995
Completed	10
Retired	10
Preserved	1 (as training vessel)
General characteristics
Type	Nuclear-powered ballistic missile submarine
Displacement	Surfaced: 7,325 long tons (7,443 t) Submerged: 8,251 long tons (8,383 t)
Length	425 ft (130 m)
Beam	33 ft (10 m)
Draft	28 ft 6 in (8.69 m)
Propulsion	1 × S5W PWR; 2 geared steam turbines (15,000 shp (11,000 kW)),; 1 shaft;
Speed	16 knots (30 km/h) surfaced; 21 knots (39 km/h) submerged;
Test depth	1,300 feet (400 m)
Complement	Two crews of 14 officers and 126 enlisted
Armament	16 Polaris A3 or Poseidon C3 or Trident I C4 missiles, 4 × 21-inch (533 mm) torpedo tubes, 12 torpedoes

The James Madison class of submarine was an evolutionary development from the Lafayette class of fleet ballistic missile submarine. They were identical to the Lafayettes except for being initially designed to carry the Polaris A-3 missile instead of the earlier A-2. This class, together with the George Washington, Ethan Allen, Lafayette, and Benjamin Franklin classes, composed the "41 for Freedom" that was the Navy's primary contribution to the nuclear deterrent force through the late 1980s. This class and the Benjamin Franklin class are combined with the Lafayettes in some references.

Design

In the early 1970s all were modified for the Poseidon C-3 missile. During the late 1970s and early 1980s, six boats were further modified to carry the Trident I C-4 missile, along with six Benjamin Franklin-class boats. These were James Madison, Daniel Boone, John C. Calhoun, Von Steuben, Casimir Pulaski, and Stonewall Jackson.^[3]

Fate

The James Madisons were decommissioned between 1986 and 1995 due to a combination of SALT II treaty limitations as the Ohio-class SSBNs entered service, age, and the collapse of the Soviet Union. One (Sam Rayburn) remains out of commission but converted to a Moored Training Ship (MTS-635) with the missile compartment removed. She is stationed at Norfolk Naval Shipyard in Portsmouth, Virginia for inactivation.^[3]

Boats in class

Submarines of the James Madison class:^[3]^[4] (Submarines marked with * indicate Trident I C-4 ballistic missile conversions.)

Name	Hull number	Builder	Laid down	Launched	Commissioned	Decommissioned	Fate
James Madison*	SSBN-627	Newport News Shipbuilding and Drydock Co.	5 March 1962	15 March 1963	28 July 1964	20 November 1992	Disposed of through Ship-Submarine Recycling Program, 1997
Tecumseh	SSBN-628	General Dynamics Electric Boat	1 June 1962	22 June 1963	29 May 1964	23 July 1993	Disposed of through Ship-Submarine Recycling Program, 1994
Daniel Boone*	SSBN-629	Mare Island Naval Shipyard	6 February 1962	22 June 1963	23 April 1964	18 February 1994	Disposed of through Ship-Submarine Recycling Program, 1994
John C. Calhoun*	SSBN-630	Newport News Shipbuilding and Drydock Co.	4 June 1962	22 June 1963	15 September 1964	28 March 1994	Disposed of through Ship-Submarine Recycling Program, 1994
Ulysses S. Grant	SSBN-631	General Dynamics Electric Boat	18 August 1962	2 November 1963	17 July 1964	12 June 1992	Disposed of through Ship-Submarine Recycling Program, 1992
Von Steuben*	SSBN-632	Newport News Shipbuilding and Drydock Co.	4 September 1962	18 October 1963	30 September 1964	26 February 1994	Disposed of through Ship-Submarine Recycling Program, 2001
Casimir Pulaski*	SSBN-633	General Dynamics Electric Boat	12 January 1963	1 February 1964	14 August 1964	7 March 1994	Disposed of through Ship-Submarine Recycling Program, 1994
Stonewall Jackson*	SSBN-634	Mare Island Naval Shipyard	4 July 1962	30 November 1963	26 August 1964	9 February 1995	Disposed of through Ship-Submarine Recycling Program, 1995
Sam Rayburn	SSBN-635	Newport News Shipbuilding and Drydock Co.	3 December 1962	20 December 1963	2 December 1964	31 July 1989	Converted to Moored Training Ship (MTS-635) with missile compartment removed.
Nathanael Greene	SSBN-636	Portsmouth Naval Shipyard	21 May 1962	12 May 1964	19 December 1964	15 December 1986	Disposed of through Ship-Submarine Recycling Program, 2000

References

^ ^a ^b ^c ^d ^e "SSBN-616 Lafayette-Class FBM Submarines" from the FAS Archived 23 October 2012 at the Wayback Machine
^ ^a ^b ^c ^d ^e ^f Friedman, Norman (1994). U.S. Submarines Since 1945: An Illustrated Design History. Annapolis, Maryland: United States Naval Institute. pp. 199–203, 244. ISBN 1-55750-260-9.
^ ^a ^b ^c Gardiner and Chumbley 1995, p.612.
^ "FleetBallisticMissileSubmarines". Archived from the original on 28 July 2012. Retrieved 18 October 2012. California Center for Military History (dead link 2015-05-09)

Gardiner, Robert and Chumbley, Stephen (editors). Conway's All the World's Fighting Ships 1947–1995. Annapolis, US: Naval Institute Press, 1995. ISBN 1-55750-132-7.
Polmar, Norman. The Ships and Aircraft of the U.S. Fleet: Twelfth Edition. London:Arms and Armour Press, 1981. ISBN 0-85368-397-2.
US Naval Vessel Register – List of SSBN BALLISTIC MISSILE SUBMARINE (NUCLEAR-POWERED) Class vessels
This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.