Permit-class (Early)
usn_ssn_permit_68Tàu ngầmHoa KỳSSN
- Length
- 84.9 m
- Beam
- 9.6 m
- Displacement
- 4300 t
- Max Speed
- 29 kn
Mô tả
Originally named the Thresher-class and renamed after that vessel suffered an uncontrolled dive and implosion these nuclear attack submarines marked a step change in SSN capability. They are however out performed by the newer Los Angeles and Sturgeon-classes. This class introduced rafted machinery and spherical sonar to US submarines. In the 1960s and early 1970s, many Permits were still using the Mark 37 and Mark 16 torpedo combination, although during the 1970s most boats would be upgraded for Mk-48, BQR-25 STASS, and BQQ-5 sonars.
Unit
- Type
- Submarine
- Role
- SSN
- In service
- 1962–1996
- Variants
- 13
- Armor
- None
- Task Force cost
- 6,000 pts
- Score value
- 5
Dimensions
- Length
- 84.9 m
- Beam
- 9.6 m
- Displacement
- 4,300 t
Performance
- Max speed
- 29 kn
- Max reverse
- 7 kn
- Periscope depth
- 35 ft
- Crush depth
- 1,625 ft
- Max depth change
- 5 m/s
Machinery
- Main power
- Nuclear
- Horsepower
- 15,000 hp
- Propulsion
- 1 shaft
- Rudders
- 1
Signatures
- Visual ID range
- 6 nm
- RCS
- Semi-small
- IR signature
- Semi-small
Service variants
| Variant | In service |
|---|---|
| Variant 1 | 1962–1991 |
| Variant 2 | 1962–1990 |
| Variant 3 | 1963–1989 |
| Variant 4 | 1964–1989 |
| Variant 5 | 1964–1991 |
| Variant 6 | 1967–1990 |
| Variant 7 | 1964–1992 |
| Variant 8 | 1964–1988 |
| Variant 9 | 1966–1992 |
| Variant 10 | 1966–1992 |
| Variant 11 | 1967–1994 |
| Variant 12 | 1968–1996 |
| Variant 13 | 1967–1993 |