Hello!
I cannot remember right now what "NB" was, Netzboot? nebelboot?
At least it was a former Norwegian ship, D/S Øygar
Here is a write-up and a picture:
http://www.warsailors.com/homefleet/shipswoe.htmlWW II: Hired out to the Royal Norwegian Navy as patrol vessel in Sept.-1939, fitted with a 76mm canon. When Norway was invaded on Apr. 9-1940 she was stationed at Klokkarvik, Sotra, then withdrew to Sørfjord near Osterøy and took part in the army's operations there. On Apr. 22-1940 she was in a battle with a German naval vesssel near Vaksdal, had many hits on the German ship but narrowly missed being hit by a torpedo, which passed right in front of her bow. Abandoned in Mofjord on Apr. 26-1940. Taken over by the Germans and in use as Bisam NB.07, later V- 5507 (V 5505?).
B.