Konsul-class submersible

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Class overview
Name	Consul class DSV
Builders	Admiralty Shipyard
Operators	Russian Navy
Preceded by	Mir
Built	1992–2011
In service	2001–present
Completed	2
Active	2
General characteristics
Type	Deep-submergence vehicle
Displacement	25 tonnes (25 long tons)
Length	8.4 m (27 ft 7 in)
Beam	3.9 m (12 ft 10 in)
Height	3.9 m (12 ft 10 in)
Speed	3.3 knots (6.1 km/h; 3.8 mph) maximum 2.3 knots (4.3 km/h; 2.6 mph) cruise
Endurance	10–12 hours
Test depth	6,000 m (20,000 ft)
Capacity	1 passenger/mission specialist
Crew	2

Consul-class DSV (project 1681x) is a class of two deep-submergence vehicles (DSVs) built by the Russian Navy and operated by the Navy's Main Underwater Research Directorate. Conceived in the late 1980s, they are a military counterpart to the better known, strictly civilian Mir submersibles. The first ship in the class, AS-37 Rus, is built to the original project 18610, while the second one, AS-39 Consul, is of the updated project 16811 design, though Rus was later upgraded to the pr. 16811 specs.