What is this ship?- found on the beach

[offshore]

Few days ago due to low tide on the beach of Kolberg, a wreck of german ship was digged up. It  has approx. 20m lenght, driven with diesel engine and proppeller.On the starting air bottle there is date: 21.10.42 - perhaps the date of inspection. A few shells were also found.There is 6 cylinders diesel engine of  Jastram Motor Diesel KRW6 or KRZ6, produced in Hamburger Motoren-Fabrik Carl Jastram, Hamburg-Bergedorf
Any idea what type of boat could it be?

[redfort]

Hallo,
evtl. ein FL.T-Boot Typ III

http://www.luftwaffe-zur-see.de/Kdo.Schiff/DatenFlB/Fl.T%20301-328.htm

[Darius]

Prima Information.



Darius