<Li> (1 - 3) Oiler (unlicensed qualified rating) </Li> <Li> (0 - 3) Greaser / s (unlicensed qualified rating) </Li> <Li> (1 - 5) Entry - level rating (such as Wiper (occupation), Utilityman, etc .) </Li> <P> Many American ships also carry a Qualified Member of the Engine Department . Other possible positions include Motorman, Machinist, Electrician, Refrigeration Engineer, and Tankerman . Engine Cadets are engineer trainees who are completing sea time necessary before they can obtain a watchkeeping license . </P>

Four types of sea transport from long ago