Juliett-class submarine

K-77, a Juliett-class submarine
Class overview
Operators Soviet Navy
Preceded byEcho I class
Succeeded byCharlie class
Subclasses1960–1968
In commission1963–1994
Planned35
Completed16
Cancelled19
Retired16
Preserved1
General characteristics
TypeSubmarine
Displacement
  • 3,174 t (3,124 long tons) (surfaced)
  • 3,750 t (3,690 long tons) (submerged)
Length85.9 m (281 ft 10 in)
Beam9.7 m (31 ft 10 in)
Draft3.29 m (10 ft 10 in)
Propulsion
Speed
  • 16 knots (30 km/h; 18 mph) (surfaced)
  • 18 knots (33 km/h; 21 mph) (submerged)
Range
  • 18,000 nmi (33,000 km; 21,000 mi) at 7 knots (13 km/h; 8.1 mph) (snorkeling)
  • 27.8 nmi (51.5 km; 32.0 mi) at 18 knots (33 km/h; 21 mph) (submerged)
Test depth240 m (790 ft)
Complement78
Sensors and
processing systems
Electronic warfare
& decoys
Nakat-M ESM
Armament

Project 651, known in the West by its NATO reporting name Juliett class, was a class of Soviet diesel-electric submarines armed with cruise missiles. They were designed in the late 1950s to provide the Soviet Navy with a nuclear strike capability against targets along the east coast of the United States and enemy combatants (aircraft carriers). The head of the design team was Abram Samuilovich Kassatsier. They carried four nuclear-capable cruise missiles with a range of approximately 300 nautical miles (560 km), which could be launched while the submarine was surfaced and moving less than four knots (7.4 km/h). Once surfaced, the first missile could be launched in about five minutes; subsequent missiles would follow within about ten seconds each. Initially, the missiles were the inertially-guided P-5 (NATO reporting name SS-N-3c Shaddock). When submarine-launched ballistic missiles rendered the P-5s obsolescent, they were replaced with the P-6 (also NATO reporting name SS-N-3a Shaddock, though a very different missile) designed to attack aircraft carriers. A special 10 m2 target guidance radar was built into the forward edge of the sail structure, which opened by rotating. One boat was eventually fitted with the Kasatka satellite downlink for targeting information to support P-500 4K-80 "Bazalt" (SS-N-12 Sandbox) anti-ship cruise missiles. The Juliett class had a low magnetic signature austenitic steel double hull, covered by two inches (51 mm) thick black tiles made of sound-absorbing hard rubber.