Marine engineers are responsible for the design, maintenance and repair of the various mechanical systems in a ship. A marine engineer often works closely with the architect who designed the initial blueprint for a ship’s structure. A marine engineer is responsible for designing the propulsion system, auxiliary power mechanisms and other essential machinery required for a ship’s efficient functioning. He can also install new equipment in the body of a ship and assess whether it is running safely and efficiently with existing equipment.
Marine engineers perform installation and maintenance work on a ship’s water, air and hydraulics systems, as stated on the Royal Navy website. Some engineers are responsible for the construction of cooling systems to ensure important cargo is not harmed during transportation. Marine engineers must ensure that the systems they create will be impervious to damage during an ocean voyage.