Officer on watch (OOW) (Вахтенный помощник капитана)

Officer on watch (OOW), Second Officer, Third Officer

Chief Officer, Officer on watch (OOW)

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, Officer in charge of a navigational watch on ships of less than 500 gross tonnage, engaged on near-coastal voyages, Officer on watch (OOW)