Minesweeper M102, 1942
M102 was, by the time of this drawing, an elderly remnant of World War I vintage, being a refitted unit of the 1916 class of minesweeper.
It appears that she has had her armament removed and possible additions to her aft deckhouse to equip her as a flotilla leader. Special thanks to Jon Holford of Cork, Ireland for his corrections to my earlier mischaracterization of this vessel. He points out that this drawing reflects a number of changes made to her during the 1930s.
There is more data on this design at German-Navy.de.