sea service in the Royal Malaysian Navy "sea service in the Royal Malaysian Navy" means service on board of the Royal Malaysian Navy vessels in the Engineering Department (Propulsion) and includes regular watch, day work, engineering work within the engine room and boiler spaces or work of direct relevance to the duties of a Marine Engineer Officer; PU(A) 117/1998 - MERCHANT SHIPPING EXAMINATION FOR CERTIFICATE OF COMPETENCY MARINE ENGINEER OFFICERS RULES 1998 3. Interpretation.