4th Officer (Четвертый помощник)

Third Officer, 4th Officer, AB Seaman

Second Officer, 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

4th Officer, Officer on watch (OOW), Second Officer, Third Officer

4th Officer, Second Officer, Third Officer