Chief Officer (Старший помощник) / Second Engineer (Второй механик) / Second Officer (Второй помощник)

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

Chief engineer officer on ships powered by main propulsion machinery of 3,000 kW propulsion power or more, Second Engineer

Second Officer

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)