HMS K4

HMS K4 was a British K-class submarine built by Vickers in Barrow-in-Furness. She was laid down on 28 June 1915 and commissioned on 1 January 1917, one year before the end of World War I.

HMS K4 beached on Walney Island
History
United Kingdom
Name	HMS K4
Builder	Vickers, Barrow-in-Furness
Laid down	28 June 1915
Launched	13 July 1916
Commissioned	1 January 1917
Fate	Sunk, 31 January 1918
General characteristics
Class & type	K-class submarine
Displacement	1,980 long tons (2,010 t) surfaced 2,566 long tons (2,607 t) submerged
Length	339 ft (103 m)
Beam	26 ft 6 in (8.08 m)
Draught	20 ft 11 in (6.38 m)
Propulsion	2 × 10,500 shp (7.8 MW) Brown-Curtis or Parsons geared steam turbines 2 × Yarrow boilers 4 × 1,440 hp (1,070 kW) electric motors 1 × 800 hp (600 kW) Vickers diesel generator for charging batteries on the surface 2 × 3-blade 7 ft 6 in (2.29 m) diameter screws
Speed	24 knots (44 km/h; 28 mph) surfaced 8 knots (15 km/h; 9.2 mph) submerged
Range	Surfaced : 800 nmi (1,500 km; 920 mi) at 24 kn (44 km/h; 28 mph) 12,500 nmi (23,200 km; 14,400 mi) at 10 kn (19 km/h; 12 mph) Submerged : 8 nmi (15 km; 9.2 mi) at 8 kn (15 km/h; 9.2 mph) 40 nmi (74 km; 46 mi) at 4 kn (7.4 km/h; 4.6 mph)
Complement	59 (6 officers and 53 ratings)
Armament	8 × 18 in (460 mm) torpedo tubes, (4 beam, 4 bow) 8 × spare torpedoes 2 × 18 in torpedo tubes fitted on deck (later removed) 2 × BL 4 in (100 mm) Mk.XI guns 1 × 3 in (76 mm) gun

Accidents

January 1917

In January 1917 HMS K4 ran aground on Walney Island. The British submarine giant was stranded on its beach but was undamaged. She was refloated the next day.^[1][2]

Collision K1

In November 1917, K4 collided with sister ship K1 during an accident off the Danish coast.^[3] The light cruiser Blonde operating with K1 had to make a sharp turn to avoid three units from the 4th Cruiser Squadron. And in the confusion, K4 collided with K1. The crew of K1 were rescued and K1 sunk by the Blonde. The K4 was under the command of Lieutenant-Commander Alfred Fenner.^[4] There is a blue plaque on the wall of his home in the town of Cromer in Norfolk.

Loss

K4 was lost on 31 January 1918 during the night time fleet exercises later known as the Battle of May Island (Operation E.C.1) when she was attached to the 13th Submarine Flotilla. While attempting to avoid a collision with K3, she became the victim of collisions with K6 and K7. She was lost with all hands. The wreck is designated as a protected place under the Protection of Military Remains Act 1986.^[5]