All right: No one got it. It is indeed very difficult to answer: It is the Hansa Program. A program to replace the lost ships for the ship owners. There were three types of merchant vessels and three types tugs. The Merchant vessels were of 3.000 t to be carried (Type A, 1.923 GRT, 10 kn), 5.000 t (Type B, 2.819 GRT, 11 kn) and 9.000 t (Type C, 5.300 GRT, 12 kn) and tugs with 350, 600 and 1.000 HP.
All were coal fired. Of the Type A 52 ships of 126 were delivered until May 7th, 1945, of 55 Type B ships only 5 were completed and a single one of the Type C out of 11, the SS Nikolaifleet of the Hamburg Amerika Linie. Although 2 1.000 HP Tugs were launched, none was completed. 9 of the Type A were war losses (one of them was raised but scuttled again), 2 of the Type B, too as well as the Nikolaifleet, which was sunk off Norway by a Norwegian MTB in January 1945.
The German sea lanes to protect were as vital for Germany as the British were. Indeed not only the routes in the relative safe Baltic, but also to Norway were vital. While here the German sea lanes were never really in danger the sea lanes to Japan were, except some blockade runners and submarines, closed. In the Med the situation was more difficult due to the inactivity of the Italians. After 1943, the fall of Italy and the (re-)conquest of the Dodecanese the situation was there problematic, but until the end of the war the Dodecanese was German. It is not true to think the Germans had only their merchants in the Baltic.
Adler