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voor de modelbouwers, hier een test van het model ervan :)

Results of submerged dive plane control experiments with a model of the cargo submarine, 30 Jan 1943. (Photo © Collection J.J. Kragten)

During WWII  the Dutch B.V. Nederlandsche Ver. Scheepsbouw Bureaux (NEVESBU)made several designs of a multiple-cylinder submarine. They designed an operational attack boat and a cargo/minelayer boat. It is likely that these designs were made in the U.K. on request of the allies. The cargo version was probably intended to supply Malta. 

The Dutch post-war 3-cylinder Dolfijn/Potvis-class design clearly stems from these designs.

Met dank aan J.J. Kragten & Diving Officer :)