SSN-671 Narwhal
| Specifications | |
|---|---|
| Displacement |
3,800 tons surfaced 4,600 -5,350 tons submerged |
| Length | 314 feet |
| Beam | 31-33 feet |
| Draft | 29 feet |
| Speed |
20+ knots (23+ miles per hour, 36.8 +kph) 25 knots (submerged) |
| Test Depth | 1300 feet |
| Power Plant | One S5G nuclear reactor natural circulation plant, single directly-coupled main turbine, one shaft, 17,000 shp |
| Armament | Torpedoes, four torpedo tubes Harpoon Tomahawk |
| Complement | 107-141 total 13 Officers, 116 Enlisted |
| Unit Operating Cost Annual Average | ~$17,000,000 [source: [FY1996 VAMOSC] |
| Builder | General Dynamics' Electric Boat Division |
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