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

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, OS

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