USS K-7 (SS-38)
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| History | |
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| Name: | USS K-7 |
| Builder: | Union Iron Works, San Francisco, California |
| Launched: | 20 June 1914 |
| Commissioned: | 1 December 1914 |
| Decommissioned: | 12 February 1923 |
| Reclassified: | SS-38, 17 July 1920 |
| Struck: | 18 December 1930 |
| Fate: | Sold for scrapping, 3 June 1931 |
| General characteristics | |
| Type: | K-class submarine |
| Displacement: |
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| Length: | 153 ft 7 in (46.8 m) |
| Beam: | 16 ft 8 in (5.1 m) |
| Draft: | 13 ft 1 in (4.0 m) |
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| Range: |
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| Test depth: | 200 feet (61.0 m) |
| Complement: | 28 officers and enlisted men |
| Armament: | 4 × bow 18 in (457 mm) torpedo tubes |
USS K-3 (SS-34) was an K-class submarine built for the United States Navy during the 1910s.
The K-class boats had a length of 153 feet 7 inches (46.8 m) overall, a beam of 16 feet 8 inches (5.1 m) and a mean draft of 13 feet 1 inch (4.0 m). They displaced 451 long tons (458 t) on the surface and 527 long tons (535 t) submerged. The K-class submarines had a crew of 2 officers and 26 enlisted men. They had a diving depth of 200 feet (61.0 m).
For surface running, the boats were powered by two 475-brake-horsepower (354 kW) NELSECO diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a 170-horsepower (127 kW) electric motor. They could reach 14 knots (26 km/h; 16 mph) on the surface and 10.5 knots (19.4 km/h; 12.1 mph) underwater. On the surface, the oats had a range of 3,150 nautical miles (5,830 km; 3,620 mi) at 11 knots (20 km/h; 13 mph) and 120 nmi (220 km; 140 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged.
The K-class submarines were armed with four 18-inch (45 cm) torpedo tubes in the bow. They carried four reloads, for a total of eight torpedoes.
The boat was laid down by the Union Iron Works at San Francisco, California, under a subcontract from Electric Boat Company of Groton, Connecticut. She was launched on 20 June 1914, sponsored by Mrs. Katie-Bel McGregor, daughter of the president of Union Iron Works, and commissioned at Mare Island on 1 December with Lieutenant J. V. Ogan in command.
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