Narwhal vs Permit
Narwhal vs Permit at a glance — displacement 5,027 vs 3,810 tons, length 95 vs 84 m, speed 20 vs 15 knots, crew 107 vs 112.
Specifications
|
Narwhal |
Permit |
| Origin |
🇺🇸 United States |
🇺🇸 United States |
| Category |
Submarine |
Submarine |
| Type |
Nuclear-powered attack submarine |
Nuclear-powered attack submarine |
| Manufacturer |
General Dynamics Electric Boat |
Portsmouth Naval Shipyard |
| Year introduced |
1969 |
1961 |
| Number built |
1 unit |
14 units |
| Estimated unit price |
NA |
NA |
| Displacement |
5,027 tons |
3,810 tons |
| Maximum speed |
20.0 knots |
15.0 knots |
| Range |
Unlimited |
Unlimited |
| Length |
95.9 m |
84.9 m |
| Beam |
10.0 m |
9.6 m |
| Crew |
107 |
112 |
| Max depth |
400 m |
400 m |
Armament & Systems
|
Narwhal |
Permit |
| Armament |
- 4 × 21 in (533 mm) torpedo tubes
- SUBROC
- Mark 37 torpedoes
- Mark 45 torpedoes
- Mark 48 ADCAP torpedoes
- Mines
- Tomahawk missiles
- Harpoon missiles
|
- 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
|
| Propulsion |
1 × S5G pressurized water reactor; 1 × steam turbine, 17,000 shp (13,000 kW); 1 shaft |
1 S5W PWR, 2 steam turbines, 15,000 shp (11 MW), 1 shaft |
Detailed Comparison
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Former operators · 1 built
Former operators · 14 built
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Which has greater displacement, the Narwhal-class or Permit-class?
The Narwhal-class has greater displacement at 5,027 tons compared to the Permit-class's 3,810 tons.
Which is faster, the Narwhal-class or Permit-class?
The Narwhal-class is faster with a maximum speed of 20 knots compared to the Permit-class's 15 knots.
Which has longer range, the Narwhal-class or Permit-class?
Both the Narwhal-class and Permit-class are nuclear-powered and have unlimited range, limited only by food supplies and crew endurance.
Which is longer, the Narwhal-class or Permit-class?
The Narwhal-class is longer at 95.9 meters compared to the Permit-class's 84.9 meters.
How many crew members do the Narwhal-class and Permit-class have?
The Permit-class has a larger crew complement of 112 compared to the Narwhal-class's 107 crew members.
Which can dive deeper, the Narwhal-class or Permit-class?
Both the Narwhal-class and Permit-class have a maximum depth of 400 meters.
Which has been built in greater numbers, the Narwhal-class or Permit-class?
The Permit-class has been built in greater numbers with 14 vessels compared to 1 vessels of the Narwhal-class.
