USS N-7 (SS-59) |
| Class overview |
|---|
| Name | N class |
| Builders | |
| Operators | United States Navy |
| Preceded by | AA-1 class |
| Succeeded by | O class |
| Built | 1915–1917 |
| In commission | 1917–1926 |
| Completed | 7 |
| Scrapped | 7 |
| General characteristics |
|---|
| Type | Submarine |
| Displacement |
- N-1 to N-3:
- 347 long tons (353 t) surfaced
- 414 long tons (421 t) submerged
- N-4 to N-7:
- 331 long tons (336 t) surfaced
- 385 long tons (391 t) submerged
|
| Length |
- N-1 to N-3: 147 ft 3 in (44.88 m)
- N-4 to N-7: 155 ft (47 m)
|
| Beam |
- N-1 to N-3: 15 ft 9 in (4.80 m)
- N-4 to N-7: 14 ft 6 in (4.42 m)
|
| Draft |
- N-1 to N-3: 12 ft 6 in (3.81 m)
- N-4 to N-7: 12 ft 4 in (3.76 m)
|
| Propulsion |
- Diesel-electric
- N-1 to N-3:
- 2 × NELSECO 240V8FS Diesel engines, 600 hp (450 kW) total,
- 2 × Electro Dynamic electric motors, 300 hp (220 kW) total,
- 2 × 60-cell batteries,
- 2 × shafts
- N-4 to N-7:
- 2 × Busch-Sulzer Diesel engines, 600 hp (450 kW) total,
- 2 × Diehl electric motors,300 hp (220 kW) total,
- 2 × 60-cell batteries,
- 2 × shafts
|
| Speed |
- 13 knots (24 km/h; 15 mph) surfaced
- 11 knots (20 km/h; 13 mph) submerged
|
| Test depth | 200 ft (61 m) |
| Complement |
- N-1 to N-3: 25 officers and men
- N-4 to N-7: 29 officers and men
|
| Armament | 4 × 18-inch (450 mm) torpedo tubes, 8 torpedoes |
The United States N-class submarines were a class of seven coastal defense submarines built for the United States Navy during World War I.
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