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Sierra vs Yankee I

Sierra vs Yankee I at a glance — displacement 7,200 vs 7,760 tons, length 107 vs 132 m, speed 10 vs 13 knots, crew 61 vs 120.

Sierra submarine side profile drawing
🇷🇺 Sierra
Yankee I submarine side profile drawing
🇷🇺 Yankee I
Specifications
Sierra Yankee I
Origin 🇷🇺 Ex-USSR 🇷🇺 Ex-USSR
Category Submarine Submarine
Type Nuclear-powered attack submarine Nuclear-powered ballistic missile submarine
Manufacturer Krasnoye Sormovo Sevmash
Year introduced 1984 1967
Number built 4 units 34 units
Estimated unit price NA NA
Displacement 7,200 tons 7,760 tons
Maximum speed 10.0 knots 13.0 knots
Range Unlimited Unlimited
Length 107.2 m 132.0 m
Beam 12.3 m 11.7 m
Crew 61 120
Max depth 600 m 400 m
Performance Radar Chart
Armament & Systems
Sierra Yankee I
Armament
  • 4 × 650 mm (26 in) torpedo tubes (only Sierra I)
  • 4 × 530 mm (21 in) torpedo tubes (6 x Sierra II)
  • SS-N-21 Sampson SLCM
  • SS-N-15 Starfish anti-submarine weapon
  • SS-N-16 Stallion
  • 42 mines (instead of torpedoes)
  • 16 x R-27 (SS-N-6 Serb) submarine-launched ballistic missiles, D-5 launch system
  • 4 x 533 mm torpedo tubes for 14 Type 53 torpedoes or mines
  • 2 x 400 mm torpedo tubes for 4 Type 40 torpedoes
Propulsion 1 × PWR, 190 MW (HEU <= 45%), 2 × 1,002 hp (747 kW) emergency motors, 1 shaft, 2 spinners 2 VM-4 pressurized-water reactors, 4 steam turbines, 2 shafts
Change comparison vs
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Frequently Asked Questions

Which has greater displacement, the Sierra-class or Yankee I-class?
The Yankee I-class has greater displacement at 7,760 tons compared to the Sierra-class's 7,200 tons.
Which is faster, the Sierra-class or Yankee I-class?
The Yankee I-class is faster with a maximum speed of 13 knots compared to the Sierra-class's 10 knots.
Which has longer range, the Sierra-class or Yankee I-class?
Both the Sierra-class and Yankee I-class are nuclear-powered and have unlimited range, limited only by food supplies and crew endurance.
Which is longer, the Sierra-class or Yankee I-class?
The Yankee I-class is longer at 132.0 meters compared to the Sierra-class's 107.2 meters.
How many crew members do the Sierra-class and Yankee I-class have?
The Yankee I-class has a larger crew complement of 120 compared to the Sierra-class's 61 crew members.
Which can dive deeper, the Sierra-class or Yankee I-class?
The Sierra-class can dive deeper with a maximum depth of 600 meters compared to the Yankee I-class's 400 meters.
Which has been built in greater numbers, the Sierra-class or Yankee I-class?
The Yankee I-class has been built in greater numbers with 34 vessels compared to 4 vessels of the Sierra-class.