Alfa-class
Prj.705 «Lira»
wp_ssn_alfaSubmarinesUSSRSSN
- Length
- 81.4 m
- Beam
- 10 m
- Displacement
- 3180 t
- Max Speed
- 41 kn
Description
The Alfa is the fastest production submarine ever made, second in speed only to the Papa-class. It was the first Soviet submarine to feature heavy automation, and was fitted with an advanced integrated sonar and propelled by an equally advanced liquid metal reactor plant. They are extremely noisy at high speeds but quiet at slower speeds.
Unit
- Type
- Submarine
- Role
- SSN
- In service
- 1971–1990
- Variants
- 7
- Armor
- None
- Task Force cost
- 6,000 pts
- Score value
- 5
Dimensions
- Length
- 81.4 m
- Beam
- 10 m
- Displacement
- 3,180 t
Performance
- Max speed
- 41 kn
- Max reverse
- 7 kn
- Periscope depth
- 34 ft
- Crush depth
- 1,640 ft
- Max depth change
- 5 m/s
Machinery
- Main power
- Nuclear
- Horsepower
- 40,000 hp
- Propulsion
- 1 shaft
- Rudders
- 1
Signatures
- Visual ID range
- 5 nm
- RCS
- Small
- IR signature
- Small
Service variants
| Variant | In service |
|---|---|
| Variant 1 | 1971–1978 |
| Variant 2 | 1978–1990 |
| Variant 3 | 1979–1990 |
| Variant 4 | 1981–1990 |
| Variant 5 | 1977–1990 |
| Variant 6 | 1978–1990 |
| Variant 7 | 1981–1990 |