[Schupo]

A good question about possible naval markings.

Tom is exactly correct about the Nordsee and Ostsee markings being fleet markings. There were some other naval markings that were applied to weapons (I have no idea if this was done to crockery though) of various types. There were Werft markings for ports such as W.W. for Werft Wilhelmshaven or W.K. for Werft Kiel. Some weapons might be marked to divisions as well, such as II.T.D. for the Zweite Torpedo Division or bataillons, such as I.S.B. to designate the Erstes Seebataillon. So, other naval markings will be found on German weapons and equipment. I think it would depend upon the specific time period and what was marked.

I have no idea if mess equipment was marked in this manner. I would think it would be very difficult to unit mark crockery with anything other than a stencil. The only markings I have seen on crockery have been generic naval acceptance markings that are fired into the glaze.