James Madison-class submarine

{{Infobox ship image

|Ship image=USS John C. Calhoun (SSBN-630).jpg

|Ship caption= USS John C. Calhoun (SSBN-630) entering Holy Loch, Scotland on completion of the thousandth Polaris nuclear deterrent patrol, 18 May 1972.

|image alt=Angled view of gray submarine in river steaming towards camera. Personnel wearing high-visibility apparel are standing atop the submarine, while a tugboat spraying water is visible at the submarine's starboard side.

}}

{{Infobox ship class overview

|Builders=*General Dynamics Electric Boat

• Mare Island Naval Shipyard
• Portsmouth Naval Shipyard
• Newport News Shipbuilding and Drydock Company[https://fas.org/programs/ssp/man/uswpns/navy/submarines/ssbn616_lafayette.html "SSBN-616 Lafayette-Class FBM Submarines" from the FAS] {{webarchive|url=https://web.archive.org/web/20121023233739/http://www.fas.org/programs/ssp/man/uswpns/navy/submarines/ssbn616_lafayette.html |date=23 October 2012 }}

|Operators= {{naval|United States}}

|Class before={{sclass|Lafayette|submarine|4}}

|Class after={{sclass|Benjamin Franklin|submarine|4}}

|Subclasses=

|Built range=1962–1964

|In commission range=1964–1995

|Total ships building=

|Total ships planned=

|Total ships completed=10

|Total ships cancelled=

|Total ships active=

|Total ships laid up=

|Total ships lost=

|Total ships retired=10

|Total ships preserved=1 (as training vessel)

}}

{{Infobox ship characteristics

|Hide header=

|Header caption=

|Ship type=Nuclear-powered ballistic missile submarine

|Ship displacement=Surfaced: {{convert|7325|LT|t|0|lk=in|abbr=on}}

Submerged: {{convert|8251|LT|t|0|lk=in|abbr=on}}{{cite book | last = Friedman | first = Norman | title = U.S. Submarines Since 1945: An Illustrated Design History | publisher = United States Naval Institute | year = 1994 | location = Annapolis, Maryland | pages = 199–203, 244 | isbn = 1-55750-260-9 }}

|Ship length= {{convert|425|ft|m|abbr=on}}

|Ship beam= {{convert|33|ft|m|abbr=on}}

|Ship draft= {{convert|28|ft|6|in|m|abbr=on}}

|Ship propulsion=*1 × S5W PWR

• 2 geared steam turbines ({{convert|15000|shp|abbr=on}}),
• 1 shaft

|Ship speed=*{{convert|16|kn|km/h}} surfaced

• {{convert|21|kn|km/h}} submerged

|Ship range=

|Ship endurance=

|Ship test depth={{convert|1300|ft|m}}

|Ship complement=Two crews of 14 officers and 126 enlisted

|Ship sensors=

|Ship EW=

|Ship armament=16 Polaris A3 or Poseidon C3 or Trident I C4 missiles, 4 × 21-inch (533 mm) torpedo tubes, 12 torpedoes

|Ship notes=

}}