Rick, You're right, technical, justice, administrative, medical, veterinary, artillery, infantery officers used ranks of the army and not of the navy. the question is quite complicated and we are waiting for the book about navy uniforms like this one which exists about air force in 3 parts. exceptional work ! Maybe this link will be helpfull : http://www.military-uniform.narod.ru/navy/1951/index.htm It is the regulation of 1951 about navy uniforms which describes all the shoulder boards in use. Rodion