Grave sites of two crewmen of U-550: Wilhelm Flade, 1923 - 16.04.1944, and
Gunther Heder, 29.06.1922 - 16.04.1944 (this grave site is listed as unknown). The other is properly marked. They are both located in section 2c of this cemetery.
The grave of Günther Heder from U-550 is located at the Island Cemetery at Newport, RI.