Main engine constitutes an essential part of a
vessel; otherwise, in the event of poorly tended main engine
breakdown, it will cause the vessel to cease operation.
Therefore, some efforts are necessary to improve optimal
maintenance of main engine, one of which is the
procurement of main engine spare parts for vessel
maintenance and repair. Inventory and good coordination
between vessel crews and office staffs are mandatory to
ensure the continuation of vessel operation. The correct
procurement of spare part main engine, added with
monitoring and employee coordination developed by the
company, proved able to improve a vessel’s operation,
therefore the procurement of main engine spare part as
intervening variable can be concluded to enforce the
influence of monitoring and employee coordination
towards vessel operation.The research method uses a
quantitative method approach.
Keywords : Monitoring, Employee Coordination, Main Engine Spare Part Procurement, Vessel Optimization.