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A Long...Warship Wednesday, July 9, 2025

Talyn

SAINT
Founding Member
Dutch "Gravity" Boat

An attractive boat...

The K XIV-class

Paid for by the oil-rich government of the Dutch East Indies in 1930 to serve as “colonial” submarines with the “K” for “Koloniën,” the five K XIV-class boats were designed by Dutch Navy engineer J. J. van der Struyff, who already had the smaller 0 9 and K XI-classes under his belt.

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A bit larger and more modern than previous Dutch classes, they leveraged input from across Europe. Using a pair of 1,600 hp German-made MAN diesel engines and two 430 kW domestically built Smit Slikkerveer electric motors lined up on two shafts, these 1,045-ton vessels could push their 241-foot welded steel hulls at speeds approaching 17 knots on the surface (they made 19 on trials) and nine while submerged. The plant enabled them to cruise at an impressive 10,000nm at 12 knots, ideal for West Pacific patrols.

Using double hulls with a test depth of 250 feet, they carried both search and attack periscopes provided by Stroud and a periscopic radio antenna that could be used while submerged. Ideally, for their intended use around the 18,000-island East Indies archipelago, they could float in just 13 feet of water and submerge in anything over 50.


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