Boats in this Class
|Type||Patrol submarine for the Dutch colonies|
|Class name||K II. Named after first (and only) of
"K" stands for "KoloniŽn" (colonies)
|Laid down||20 Nov 1915|
|Launched||27 Feb 1919|
|Commissioned||28 Mar 1922|
|Design||William Denny & Brothers, Dumbarton, U.K.
|Shipyard||Fijenoord, Rotterdam, the Netherlands|
|Le x Be x Dr||57.31 m x 5.29 m x 3.82 m|
|Displacement Stnd/Surf/Subm||507 t / 569 t / 649 t|
|Engines||Two 8-cylinder M.A.N. diesel engines, 2-stroke, 2 x 900 apk|
|Main motor||2 motors/generators, 2 x 250 apk|
|Batteries||120 cells, 4350 Ah during 3 hours|
|Snort||"Yes", see notes|
|Speed surf/subm||15,5 kts / 8.5 kts|
|Range surf/subm||3500 nm at 11 kts / 25 nm at 8.5 kts|
|Diving depth||40 m|
|Torpedo tubes||2 x 18" bow, 2 x 18" external stern|
|Armament||12 torpedoes type II 45|
|Guns||1 x 7.5 cm, 1 x 12.7 mm mg (possibly Browning,
but the Navy did not buy these until the late 1920's)
|Periscopes||Two, short stroke.|
|Notes||Single-hull type, three main ballast tanks. Boat
divided in watertight compartments with watertight doors. Because the
German M.A.N. engine factory was to busy with her war contracts
the M.A.N. diesels were installed and completed by the K.M.S.
shipyard. This is why the K II, which was launched before the
K III boats, commissioned after the K III class.
There are reports of snorting, at low speed, with K II type boats dating from as early as 1923/24. These boats had a "diesel air intake" that could be positioned above the wave breaker of the periscope. This intake was originally designed for use during bad weather when the sub was surfaced but the hatches had to be closed. Because of the inadequate valve system (to keep water out) this system did not perform well. See the O 2, O 16 and O 19 class for more snort info.
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