Permit vs Valiant / Churchill
Permit vs Valiant / Churchill at a glance — displacement 3,810 vs 4,500 tons, length 84 vs 87 m, speed 15 vs 20 knots, crew 112 vs 103.
Specifications
|
Permit |
Valiant / Churchill |
| Origin |
🇺🇸 United States |
🇬🇧 United Kingdom |
| Category |
Submarine |
Submarine |
| Type |
Nuclear-powered attack submarine |
Nuclear-powered attack submarine |
| Manufacturer |
Portsmouth Naval Shipyard |
Vickers Armstrong |
| Year introduced |
1961 |
1966 |
| Number built |
14 units |
2 units |
| Estimated unit price |
NA |
NA |
| Displacement |
3,810 tons |
4,500 tons |
| Maximum speed |
15.0 knots |
20.0 knots |
| Range |
Unlimited |
Unlimited |
| Length |
84.9 m |
87.0 m |
| Beam |
9.6 m |
10.1 m |
| Crew |
112 |
103 |
| Max depth |
400 m |
300 m |
Armament & Systems
|
Permit |
Valiant / Churchill |
| Armament |
- 4 × 21 inch (533 mm) torpedo tubes amidships
- 12-18 × Mark 37 torpedoes (later Mark 48s)
- 4-6 × UUM-44 SUBROC anti-submarine missiles
- 4 × UGM-84 Harpoon anti-ship missiles
|
- 6 × 21 in (533 mm) bow torpedo tubes
- 32 × Mark VIII and Tigerfish torpedoes
- 64 × Mk.5 and Mk.6 mines
- 26 × torpedoes
- 6 × UGM-84B Harpoon Anti-ship missiles
- Stonefish and Sea Urchin mines
|
| Propulsion |
1 S5W PWR, 2 steam turbines, 15,000 shp (11 MW), 1 shaft |
1 × Rolls-Royce pressurised water reactor, 2 × steam turbines, 1 shaft |
Detailed Comparison
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Which has greater displacement, the Permit-class or Valiant / Churchill-class?
The Valiant / Churchill-class has greater displacement at 4,500 tons compared to the Permit-class's 3,810 tons.
Which is faster, the Permit-class or Valiant / Churchill-class?
The Valiant / Churchill-class is faster with a maximum speed of 20 knots compared to the Permit-class's 15 knots.
Which has longer range, the Permit-class or Valiant / Churchill-class?
Both the Permit-class and Valiant / Churchill-class are nuclear-powered and have unlimited range, limited only by food supplies and crew endurance.
Which is longer, the Permit-class or Valiant / Churchill-class?
The Valiant / Churchill-class is longer at 87.0 meters compared to the Permit-class's 84.9 meters.
How many crew members do the Permit-class and Valiant / Churchill-class have?
The Permit-class has a larger crew complement of 112 compared to the Valiant / Churchill-class's 103 crew members.
Which can dive deeper, the Permit-class or Valiant / Churchill-class?
The Permit-class can dive deeper with a maximum depth of 400 meters compared to the Valiant / Churchill-class's 300 meters.
Which has been built in greater numbers, the Permit-class or Valiant / Churchill-class?
The Permit-class has been built in greater numbers with 14 vessels compared to 2 vessels of the Valiant / Churchill-class.