M1940 is one of three subclasses of the M class - standard minesweeper of the Kriegsmarine.
127 of these ships were built and some of them were still in service in foreign navies in the 1990's (as corvettes).
Initially I wanted to base the drawing on the
SS Panna Wodna, which in her turn was a modified version of the M1940, but I ended up re-drawing it from scratch, so they are slightly different
I'm planning on drawing a couple more variants of this ship.