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 in charge of a navigational watch on ships of 500 gross tonnage or more, Officer on watch (OOW), Second Officer, Third Officer, Chief mate on ships of 3,000 gross tonnage or more

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

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

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