Shishumar-class submarine

A Shishumar-class submarine underway
Class overview
Name:	Shishumar class
Builders:	Howaldtswerke-Deutsche Werft Mazagon Dock Limited
Operators:	Indian Navy
In commission:	1986–
Planned:	6
Completed:	4
Cancelled:	2
Active:	4
General characteristics
Type:	Attack Submarine
Displacement:	1,450 t (1,427 long tons) surfaced 1,850 t (1,821 long tons) submerged
Length:	64.4 m (211 ft 3 in)
Beam:	6.5 m (21 ft 4 in)
Draught:	6 m (19 ft 8 in)
Propulsion:	4 × diesel-electric motors, 2,400 hp (1,790 kW) each 1 × Siemens motor, 4,600 hp (3,430 kW) 4 × 1.8 MW Siemens alternators 1 shaft
Speed:	11 knots (20 km/h; 13 mph) surfaced 22 knots (41 km/h; 25 mph) submerged
Range:	8,000 nmi (15,000 km) at 8 kn (15 km/h; 9.2 mph) 13,000 nmi (24,000 km) at 10 kn (19 km/h; 12 mph)
Test depth:	260 m (850 ft)
Complement:	40 (8 Officers)
Armament:	14 × AEG-SUT Mod-1 torpedoes 24 × external strap-on mines

The Shishumar-class vessels are diesel-electric Attack submarines, currently in active service with the Indian Navy.

These submarines are a lengthier and heavier Indian variant of the Type 209 submarines developed by the German yard Howaldtswerke-Deutsche Werft (HDW) under the internal designation Type 1500.

The first two vessels were built by HDW at Kiel, while the remainder were built at Mazagon Dock Limited (MDL), Mumbai under a technology transfer agreement. The submarines were commissioned between 1986 and 1994.

These submarines have a displacement of 1660 tons when surfaced, a speed of 22 knots (41 km/h), and a complement of 40 including eight officers.

India signed the agreement for these submarines with HDW in 1981. The initial agreement called for delivery of four submarines which were delivered to the Indian Navy between 1986 and 1994. A subsequent agreement for the construction of 2 more submarines to be constructed at MDL was cancelled after the Pokhran-II nuclear tests in 1998.