Dry Combat Submersible

	The prototype Dry Combat Submersible
Class overview
Builders	Lockheed Martin
Planned	3[citation needed]
Building	2[citation needed]
General characteristics
Type	Submersible
Displacement	28 tonnes
Length	12 metres (39 ft)
Beam	2.4 metres (7.9 ft)
Draft	2.4 metres (7.9 ft)
Propulsion	Electric motors, lithium-ion batteries
Speed	5 knots (5.8 mph; 9.3 km/h)
Range	60 nautical miles (69 mi; 110 km)
Endurance	24 hours
Test depth	100 metres (330 ft)
Complement	2 crew, 8 SEALs
Sensors and ; processing systems	Sonar, fathometer

The Dry Combat Submersible (DCS) is a midget submarine delivered to USSOCOM by Lockheed Martin. Lockheed Martin were nominated as the prime contractor with Submergence Group as the sub contractor. DCS is designed for use by the United States Navy SEALs for insertion on special operations missions. It will replace the canceled Advanced SEAL Delivery System and will serve alongside the Shallow Water Combat Submersible.^[2]

As the name suggests, the Dry Combat Submersible has a dry interior, enabling longer mission durations in colder water. The DCS is designated the S351 Nemesis.^[3]

Lockheed Martin and the Submergence Group were awarded the $166 million, 5-year contract to develop and build three DCSs in June 2016. By 2018, the total spent on the submersibles rose to $236 million.^[4] The DCS reached initial operational capability in May 2023, with 2 submersibles completed and delivered to the US Navy.

^ ^a ^b Cite error: The named reference Burgess was invoked but never defined (see the help page).
^ McRaven, William (March 14, 2015). Hearing on National Defense Authorization Act for Fiscal Year 2015 and Oversight of Previously Authorized Programs Before the Committee on Armed Services, House of Representatives, One Hundred Thirteenth Congress, Second Session (PDF). Subcommittee on Intelligence, Emerging Threats and Capabilities Hearing on Fiscal Year 2015 National Defense Authorization Budget Request from the U.S. Special Operations Command and Posture of the U.S. Special Operations Forces. Washington, DC: Government Printing Office. Retrieved January 23, 2019.
^ "S351". Submergence Group | MSubs. 27 March 2018. Retrieved 30 June 2019.
^ Ernst, Douglas (September 15, 2016). "SEALs soon using new 'dry combat submersibles' on 'can't fail' missions". The Washington Times. Retrieved 2 March 2019.

[Burgess-1] Cite error: The named reference Burgess was invoked but never defined (see the help page).

[McRaven-2] McRaven, William (March 14, 2015). Hearing on National Defense Authorization Act for Fiscal Year 2015 and Oversight of Previously Authorized Programs Before the Committee on Armed Services, House of Representatives, One Hundred Thirteenth Congress, Second Session (PDF). Subcommittee on Intelligence, Emerging Threats and Capabilities Hearing on Fiscal Year 2015 National Defense Authorization Budget Request from the U.S. Special Operations Command and Posture of the U.S. Special Operations Forces. Washington, DC: Government Printing Office. Retrieved January 23, 2019.

[MSUBS-3] "S351". Submergence Group | MSubs. 27 March 2018. Retrieved 30 June 2019.

[Ernst-4] Ernst, Douglas (September 15, 2016). "SEALs soon using new 'dry combat submersibles' on 'can't fail' missions". The Washington Times. Retrieved 2 March 2019.

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