Recognition Guide Warships of the Second World War
United States Navy — Submarine SS-68

USS O-7

O-1-class submarine

USS O-7
Standards and Curriculum Division Training, Bureau of Naval Personnel — The Fleet Type Submarine, Navpers 16160 — Public domain — Wikimedia Commons Plate — SS-68 A photograph of the United States Submarine O-7.

Service

  1. United States Navy as O-74 July 1918 — 2 July 19452,131 days of the war
O-1-class submarine Particulars
Name
USS O-7
Pennant / hull number
SS-68
Builder
Fore River Shipbuilding Company, Quincy, Massachusetts
Ordered
3 March 1916
Laid down
14 February 1917
Launched
16 December 1917
Commissioned
4 July 1918
Decommissioned
1 July 1931
Recommissioned
12 February 1941
Struck
11 July 1945
Fate
Sold for scrap, 22 January 1946 (1946)
Status
Scrapped

Specifications

Displacement, surfaced
520 long tons (528 t)
Displacement, submerged
629 long tons (639 t)
Length
52.43 m (172 ft)
Beam
5.49 m (18 ft)
Draught
4.27 m (14 ft)
Speed
14 knots (25.9 km/h, 16.1 mph)
Range
5,500 nmi (10,186 km)
Complement
29
Main gun
76 mm (3 in)

USS O-7 was a O-1-class submarine in service with the United States Navy. She carried the pennant number SS-68. Fore River Shipbuilding Company, Quincy, Massachusetts laid her keel on 14 February 1917. Launched on 16 December 1917, she entered service on 4 July 1918.

The boat displaced 520 long tons surfaced and 629 long tons submerged. She measured 52.4 m (172 ft) long with a beam of 5.5 m (18 ft). Her designed speed was 14 knots, and she carried a complement of 29.

Her main battery was one 76 mm (3 in) guns. Her machinery developed 880 bhp.

She was in commission for 2,131 days of the Second World War. She was decommissioned on 1 July 1931. She recommissioned on 12 February 1941. She was struck from the register on 11 July 1945.

She was broken up for scrap on 22 January 1946.

Written from the harvested record. Every figure above is sourced; the wording is this site's own.

Armament and machinery

Armament and machinery
Propulsion
  • 2 × NELSECO 6-EB-14 diesel engines
  • 2 × Electro-Dynamic Company electric motors
  • 2 × 60-cell batteries
  • 2 × Propellers
Power
  • 880 bhp diesel
  • 740 hp electric
Armament
  • 4 × 18 inch (450 mm) bow torpedo tubes (8 torpedoes)
  • 1 × 3 in/23 caliber retractable deck gun

Sister ships

Sources

  • Facts harvested from USS O-7 on Wikipedia. Figures only — no wording is taken from it.
  • Photograph: Standards and Curriculum Division Training, Bureau of Naval Personnel — The Fleet Type Submarine, Navpers 16160 — Public domain — Wikimedia Commons