USS K-4

	USS K-4 on sea trials, c. 1914
History
United States
Name	Walrus
Namesake	The walrus
Builder	The Moran Company, Seattle, Washington
Cost	$544,545.32 (hull and machinery)
Laid down	27 January 1912
Launched	19 March 1914
Sponsored by	Mrs. James P. Olding
Commissioned	24 October 1914
Decommissioned	10 May 1923
Renamed	K-4 (Submarine No.35), 17 November 1911
Stricken	18 December 1930
Identification	Hull symbol: SS-35 (17 July 1920); Call sign: NYI; ;
Fate	Sold for scrapping, 3 June 1931
General characteristics
Class & type	K-class submarine
Displacement	392 long tons (398 t) surfaced; 521 long tons (529 t) submerged;
Length	153 ft 7 in (46.81 m)
Beam	16 ft 8 in (5.08 m)
Draft	13 ft 1 in (3.99 m)
Installed power	950 hp (710 kW) (diesel engines); 340 hp (250 kW) (electric motors);
Propulsion	2 × NELSECO diesel engines; 2 × Electro Dynamic electric motors; 2 × 60-cell batteries; 2 × Propellers;
Speed	14 kn (26 km/h; 16 mph) surfaced; 10.5 kn (19.4 km/h; 12.1 mph) submerged;
Range	4,500 nmi (8,300 km; 5,200 mi) at 10 kn (19 km/h; 12 mph) surfaced; 120 nmi (220 km; 140 mi) at 5 kn (9.3 km/h; 5.8 mph) submerged;
Test depth	200 ft (61 m)
Capacity	18,126 US gal (68,610 L; 15,093 imp gal) fuel
Complement	2 officers; 26 enlisted;
Armament	4 × 18 inch (450 mm) bow torpedo tubes (8 torpedoes)

USS Walrus/K-4 (SS-35), also known as "Submarine No. 35", was a K-class submarine, of the United States Navy (USN). Originally named Walrus, she was the first ship in the USN named for the walrus, though she was renamed K-4 prior to being laid down.