Hi Paul, on historische there is a Friedrich-Wilhelm Thorwest who was with the 19th MS flotilla 09.39-02.43, 29th MS Flotilla 0.43-09.43. Was Cmd of TA-22 09.43-02.44 before being Chief of 2nd Gel Flotilla 03.44-11.44. States he died on 1.1.44 with rank of Fkpt. John