Third Assistant Engineer

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The Third Assistant Engineer or Fourth Engineer is junior to the Second Assistant Engineer / Third Engineer in the engine department on a cargo ship. The most junior marine engineer of the ship, he or she is usually responsible for electrical, sewage treatment, lube oil, bilge, and oily water separation systems. Depending on usage, he/she is called "The Third" or "The Fourth" and usually stands a watch and sometimes assists the third mate in maintaining proper operation of the lifeboats.