Shallow Water Combat Submersible
| Class overview | |
|---|---|
| Builders | Teledyne Brown Engineering |
| Operators | United States Navy Royal Navy (planned) |
| Preceded by | SEAL Delivery Vehicle |
| Cost | $383 million (program cost) |
| On order | 7 USN, 3 RN |
| Building | 2 |
| Completed | 2 |
| General characteristics | |
| Type | Submersible, diver propulsion vehicle |
| Displacement | 4.5 tonnes (5.0 short tons) |
| Length | 6.8 meters (22 ft) |
| Beam | 1.5 meters (4.9 ft) |
| Draft | 1.5 meters (4.9 ft) |
| Propulsion | Lithium-ion batteries powering electric motors |
| Speed | 6 kn (11 km/h) |
| Endurance | 12 hours |
| Test depth | >190 feet (58 m) |
| Complement | 6 (2 crew, 4 passengers) |
| Sensors & processing systems | Inertial navigation system, high-frequency sonar for obstacle/mine avoidance and navigation, GPS |
| Armament | SEAL team personal weapons, limpet mines |
The Shallow Water Combat Submersible (SWCS), also known as the Mark 11 SEAL Delivery Vehicle (SDV Mk 11), is a crewed, wet (free-flooding) submersible that serves as a swimmer delivery vehicle for special-operations missions by United States Navy SEALs. Designed to replace the Mark 8 SEAL Delivery Vehicle (SDV Mk 8) on a 1-to-1 basis, Teledyne was awarded a contract to deliver 10 units for a cost of $179 million. The first two ships were delivered in 2018, with the last units planned for delivery in 2022. The SWCS will serve alongside the pressurized Dry Combat Submersible (DCS), a midget submarine developed by Lockheed Martin to replace the cancelled Advanced SEAL Delivery System (ASDS).