Improved Kilo vs Sierra
The Improved Kilo and the Sierra are both Submarine classes. The Sierra displaces 7,200 tons — 3.1x the Improved Kilo's 2,325 tons. The Improved Kilo reaches 12 knots vs 10 knots for the Sierra. Operational range is 7,500 nautical miles for the Improved Kilo vs 99,999 for the Sierra. The Improved Kilo carries a crew of 52 vs 61 for the Sierra. Submerged displacement is 3,075 tons for the Improved Kilo vs 8,300 tons for the Sierra. The Sierra can dive to 600 m compared to 300 m for the Improved Kilo. The Improved Kilo was produced in 75 units vs 4 for the Sierra. The Improved Kilo was commissioned in 1980, 4 years before the Sierra (1984).
| Displacement | 2,325 tons ◉ |
| Maximum speed | 12.0 knots ◉ |
| Range | 7,500 nm at 7 knots ◉ |
| Length | 72.6 m ◉ |
| Beam | 9.9 m ◉ |
| Crew | 52 ◉ |
| Max depth | 300 m ◉ |
| Propulsion | Diesel-electric propulsion; 2 × 1000 kW diesel generators; 1 × 5,500–6,800 shp (4,100–5,100 kW) propulsion motor; 1 × fixed-pitch 6-bladed or 7-bladed propeller |
| Armament |
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| Displacement | 7,200 tons ◉ |
| Maximum speed | 10.0 knots ◉ |
| Range | Unlimited ◉ |
| Length | 107.2 m ◉ |
| Beam | 12.3 m ◉ |
| Crew | 61 ◉ |
| Max depth | 600 m ◉ |
| Propulsion | 1 × PWR, 190 MW (HEU <= 45%), 2 × 1,002 hp (747 kW) emergency motors, 1 shaft, 2 spinners |
| Armament |
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Performance Radar Chart
Frequently Asked Questions
Which has greater displacement, the Improved Kilo-class or Sierra-class?
The Sierra-class has greater displacement at 7,200 tons compared to the Improved Kilo-class's 2,325 tons.
Which is faster, the Improved Kilo-class or Sierra-class?
The Improved Kilo-class is faster with a maximum speed of 12 knots compared to the Sierra-class's 10 knots.
Which has longer range, the Improved Kilo-class or Sierra-class?
The Sierra-class is nuclear-powered with unlimited range, while the Improved Kilo-class has a range of 7,500 nautical miles.
Which is longer, the Improved Kilo-class or Sierra-class?
The Sierra-class is longer at 107.2 meters compared to the Improved Kilo-class's 72.6 meters.
How many crew members do the Improved Kilo-class and Sierra-class have?
The Sierra-class has a larger crew complement of 61 compared to the Improved Kilo-class's 52 crew members.
Which can dive deeper, the Improved Kilo-class or Sierra-class?
The Sierra-class can dive deeper with a maximum depth of 600 meters compared to the Improved Kilo-class's 300 meters.
Which has been built in greater numbers, the Improved Kilo-class or Sierra-class?
The Improved Kilo-class has been built in greater numbers with 75 vessels compared to 4 vessels of the Sierra-class.