In line with ZDv 10/8, the official manner of formally addressing military personnel holding the rank of Fregattenkapitän (OF-4) is "Herr/Frau Fregattenkapitän". However, following German naval tradition the "Fregattenkapitän" is usually addressed as "Herr/Frau Kapitän" or in seamen's language as "Herr/Frau Kap'tän".
Rank Insignia and Rating
Rank insignia Fregattenkapitän, worn on the sleeves and shoulders, are one five-pointed star above three stripes and a half stripe between stripe two and one (or rings on sleeves; without the star when rank loops are worn).
Whereas the equivalent ranks (with the same insignia stripes) in Belgium and Denmark are NATO-translated as Commander Senior Grade, the German equivalent is simply termed Commander.[4]
^Mollo, Andrew (2001). The Armed Forces of World War II: Uniforms, Insignia & Organisation. Leicester: Silverdale books. p. 19. ISBN1-85605-603-1.
^Luft, Kathleen (1988). "National Security". In Burant, Stephen R. (ed.). East Germany: a country study. Area Handbook (3rd ed.). Washington, D.C.: Library of Congress. pp. 264–265. LCCN87600490. Retrieved 19 October 2021.