The K-Verband was a World War II German naval unit that operated a mixture of Midget submarine
Midget submarine
A midget submarine is any submarine under 150 tons, typically operated by a crew of one or two but sometimes up to 6 or 8, with little or no on-board living accommodation...

s and explosive speed boats.

It was formed in April 1944. and operated until 26 April 1945.

The miniature submarines were a mix of one and two man craft. The Linsen explosive speed boats were operated in units of 3 with two boats carrying 660-800 lb of explosives and a third tasked with remotely controlling them during their final attack run.
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