Dutch Submarines: The K I submarine class

Boat	K I
Yard #	142
Type	Patrol submarine for the Dutch colonies
Class name	K I. Named after first (and only) of class, "K" stands for "Koloniën" (colonies)
Ordered	19 Oct 1910
Laid down	16 Sep 1911
Launched	20 May 1913
Commissioned	15 July 1914
Decommissioned	1928
Fate	?
Design	Whitehead & Company, Fiume. Hay-Whitehead type, possibly K-I.
Shipyard	Koninklijke Maatschappij De Schelde, Vlissingen, the Netherlands
Cost	942,875 Dutch guilders
Le x Be x Dr	46.20 m x 4.69 m x 3.02 m
Displ. surf/subm	333 t / 358 t
Engines	Two 8-cylinder M.A.N. diesel engines, 2-stroke, 2 x 850 apk
Main motor	2 motors/generators, 2 x 157 apk
Batteries	130 cells, 3300 Ah during 3 hours
Propellers	2
Speed surf/subm	17 kts / 10.5 kts
Range surf/subm	3500 nm at 11 kts / 30 nm at 8 kts
Diving depth	40 m
Complement	17
Torpedo tubes	2 x 18" bow, 1 x 18" stern
Armament	6 torpedoes type II ⁴⁵
Guns	none
Periscopes	Two
Notes	Single-hull type. K I had two vertical rudders, one at the bow and one at the stern, and three main ballast tanks. Originally 'O' boats were paid for by the Ministry of Defence and 'K' boats were paid for by the Ministry of Colonies. The boat only had a small difference in displacement (surfaced/submerged), therefore the reserve buoyancy was very small (only 17%). This resulted in an very uncomfortable situation because the deck was almost constantly awash while at open sea with a only a low speed. The boat is equipped with "cooling devices" for boat and batteries.

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