I just read about Maciek, and am shocked and deeply sad. The Forum has lost a precious source of information, a most fine researcher, one of its cornerstones in fact. He seemed to know every single part of a Uboat, and he was always available to provide information, even the apparently unanswerable information, for the ones in need. A major blow to the Uboat enthusiasts worldwide and to my morale. But, as Don said, we'll catch up with him sooner or later and will have the most pleasant technical conversations about uboats in those vast oceans up there somewhere, i have still a lot of unanswered questions to ask.
Farewell Maciek, you will be greatly missed!