Project 670 Skat / Charlie I
Project 670M Chayka / Charlie II

Specifications
	Project 670 / Charlie I	Project 670M / Charlie II
Displacement (tons):	4,000 surfaced 5,000 submerged	4,500 surfaced 5,400 submerged
Speed (kts):	23 knots dived 16 kts surfaced
Dimensions (m):	94.0 meters long 10.0 meters beam 8.0 meters draft	102.0 meters long 10.0 meters beam 8.0 meters draft
Propulsion	1 VM-5 pressurized-water nuclear reactor 1 steam turbine 20,000 shp 1 5-bladed propeller
Endurance:
Crew	about 100
Armament:	8 SS-N-7 Starbright 6 21-in (533-mm) torpedo tubes (fwd) 12 torpedoes or 12 SS-N-15 Starfish	8 SS-N-9 Siren 6 21-in (533-mm) torpedo tubes (fwd) 12 torpedoes or 12 SS-N-15 Starfish
Electronics	Radar Snoop Tray Surface Search Sonar Shark Teeth bow-mounted periscopes

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