Hans,
The third (and last) Lisa in Gröner (vol.8/2, p.291) is Motorfishkutter HF 368 (1921, 68 brt), from 2.9.39 H 418, 8.40 for Seelöwe operation, from July 1942 DC 28, from 1944 Vs 1207, 1945 returned to owner, lost in Sturm in Oct.1947 in Kattegat. It seems this one also wasn’t M 5607. Confused situation.
It is very interesting that you are the expert in Baltic Küstenschutz-flottillas. I hope to ask you some questions if you have a time to answers.
Best regards,
Andrey