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

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

Master

Master, Master on ships of 3,000 gross tonnage or more, Master on ships of between 500 and 3,000 gross tonnage, Master on ships of less than 500 gross tonnage engaged on near-coastal voyages