AB / Fitter (Матрос-слесарь) / AB / Welder (Матрос-сварщик) / AB Seaman (Квалифицированный матрос) / Third Officer (Третий помощник)

AB Seaman

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

AB Seaman

Junior officer, Third Officer