Sierra vs Virginia
Sierra vs Virginia at a glance — displacement 7,200 vs 6,930 tons, length 107 vs 115 m, speed 10 vs 15 knots, crew 61 vs 135.
Specifications
|
Sierra |
Virginia |
| Origin |
🇷🇺 Ex-USSR |
🇺🇸 United States |
| Category |
Submarine |
Submarine |
| Type |
Nuclear-powered attack submarine |
Nuclear-powered attack submarine |
| Manufacturer |
Krasnoye Sormovo |
General Dynamics Electric Boat |
| Year introduced |
1984 |
2004 |
| Number built |
4 units |
26 units |
| Estimated unit price |
NA |
$2,800 million |
| Displacement |
7,200 tons |
6,930 tons |
| Maximum speed |
10.0 knots |
15.0 knots |
| Range |
Unlimited |
Unlimited |
| Length |
107.2 m |
115.0 m |
| Beam |
12.3 m |
10.0 m |
| Crew |
61 |
135 |
| Max depth |
600 m |
240 m |
Armament & Systems
|
Sierra |
Virginia |
| 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)
|
- 12 x VLS tubes (Tomahawk cruise missiles)
- 2 x Virginia payload tubes (12 x Tomahawk BGM-109)
- 4 x Virginia payload modules (28 x Tomahawk BGM-109)
- 4 x 21" torpedo tubes (Mk-48 torpedoes or UGM-84 Harpoon missiles)
|
| Propulsion |
1 × PWR, 190 MW (HEU <= 45%), 2 × 1,002 hp (747 kW) emergency motors, 1 shaft, 2 spinners |
1 × S9G nuclear reactor 280,000 hp (210 MW); 2 × steam turbines 40,000 shp (30 MW); 1 × single shaft pump-jet propulsor; 1 × secondary propulsion motor |
Detailed Comparison
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Former operators · 4 built
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Which has greater displacement, the Sierra-class or Virginia-class?
The Sierra-class has greater displacement at 7,200 tons compared to the Virginia-class's 6,930 tons.
Which is faster, the Sierra-class or Virginia-class?
The Virginia-class is faster with a maximum speed of 15 knots compared to the Sierra-class's 10 knots.
Which has longer range, the Sierra-class or Virginia-class?
Both the Sierra-class and Virginia-class are nuclear-powered and have unlimited range, limited only by food supplies and crew endurance.
Which is longer, the Sierra-class or Virginia-class?
The Virginia-class is longer at 115.0 meters compared to the Sierra-class's 107.2 meters.
How many crew members do the Sierra-class and Virginia-class have?
The Virginia-class has a larger crew complement of 135 compared to the Sierra-class's 61 crew members.
Which can dive deeper, the Sierra-class or Virginia-class?
The Sierra-class can dive deeper with a maximum depth of 600 meters compared to the Virginia-class's 240 meters.
Which has been built in greater numbers, the Sierra-class or Virginia-class?
The Virginia-class has been built in greater numbers with 26 vessels compared to 4 vessels of the Sierra-class.
