Sierra vs Ula
The Sierra and the Ula are both Submarine classes. The Sierra displaces 7,200 tons — 6.9x the Ula's 1,040 tons. The Sierra reaches 10 knots vs 11 knots for the Ula. Operational range is 99,999 nautical miles for the Sierra vs 5,000 for the Ula. The Sierra carries a crew of 61 vs 21 for the Ula. Submerged displacement is 8,300 tons for the Sierra vs 1,150 tons for the Ula. The Sierra can dive to 600 m compared to 200 m for the Ula. The Sierra was produced in 4 units vs 6 for the Ula. The Sierra was commissioned in 1984, 5 years before the Ula (1989).
| 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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| Displacement | 1,040 tons ◉ |
| Maximum speed | 11.0 knots ◉ |
| Range | 5,000 nm at 8 knots ◉ |
| Length | 59.0 m ◉ |
| Beam | 5.4 m ◉ |
| Crew | 21 ◉ |
| Max depth | 200 m ◉ |
| Propulsion | Diesel-electric, 2 MTU 16V 396 diesel engines (970kW each), 1 propeller, 1 Siemens Permasyn "silent" electric motor 2,200 kW (3,000 hp) |
| Armament |
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Performance Radar Chart
Frequently Asked Questions
Which has greater displacement, the Sierra-class or Ula-class?
The Sierra-class has greater displacement at 7,200 tons compared to the Ula-class's 1,040 tons.
Which is faster, the Sierra-class or Ula-class?
The Ula-class is faster with a maximum speed of 11 knots compared to the Sierra-class's 10 knots.
Which has longer range, the Sierra-class or Ula-class?
The Sierra-class is nuclear-powered with unlimited range, while the Ula-class has a range of 5,000 nautical miles.
Which is longer, the Sierra-class or Ula-class?
The Sierra-class is longer at 107.2 meters compared to the Ula-class's 59.0 meters.
How many crew members do the Sierra-class and Ula-class have?
The Sierra-class has a larger crew complement of 61 compared to the Ula-class's 21 crew members.
Which can dive deeper, the Sierra-class or Ula-class?
The Sierra-class can dive deeper with a maximum depth of 600 meters compared to the Ula-class's 200 meters.
Which has been built in greater numbers, the Sierra-class or Ula-class?
The Ula-class has been built in greater numbers with 6 vessels compared to 4 vessels of the Sierra-class.