4th Officer (Четвертый помощник) / AB Seaman (Квалифицированный матрос) / Seamen (Матрос)

Third Officer, AB Seaman

4th Officer, Junior officer, Officer in charge of a navigational watch on ships of 500 gross tonnage or more, Officer on watch (OOW), Third Officer

4th Officer, Officer in charge of a navigational watch on ships of 500 gross tonnage or more, Second Officer

OS, Junior officer, AB Seaman