The Project 690 Kefal ("Mullet") class (known in the West by its NATO reporting name Bravo class) was a design of military submarines that were built in the Soviet Union. The boats were designed for use in ASW exercises, but could also be employed in a combat role. Four vessels were built, which were commissioned into the Soviet Navy between 1967 and 1970. All four boats were stricken in the 1990s.

Class overview
OperatorsSoviet Navy
In commission1967–1995
Completed4
Retired4
General characteristics
TypeSubmarine
Displacement
  • 2,400 long tons (2,439 t) surfaced
  • 2,900 long tons (2,947 t) submerged
Length73 m (239 ft 6 in)
Beam9.8 m (32 ft 2 in)
Draft7.3 m (23 ft 11 in)
PropulsionDiesel-electric
Speed14 knots (26 km/h)
Complement65
Armament1 × 533 mm (21 in), 1 × 400 mm (16 in) torpedo tubes
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