Officer in charge of a navigational watch on ships of 500 gross tonnage or more (Вахтенный помощник капитана морского судна валовой вместимостью 500 и более) / Officer on watch (OOW) (Вахтенный помощник капитана) / OS (Вахтенный матрос) / Seamen (Матрос)

Chief Officer, Chief mate on ships of 3,000 gross tonnage or more, Chief mate on ships of between 500 and 3,000 gross tonnage, Officer on watch (OOW), Officer in charge of a navigational watch on ships of 500 gross tonnage or more, Officer in charge of a navigational watch on ships of less than 500 gross tonnage, engaged on near-coastal voyages, Security officer, Second Officer, Third Officer, 4th Officer, Boatmaster of a pleasure craft, Boatmaster of a small craft used for commercial purposes, Junior officer

Junior officer, Officer in charge of a navigational watch on ships of 500 gross tonnage or more

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