Shakedown cruise is a
nautical term in which the performance of a
ship is tested. Generally, shakedown cruises are performed before a ship enters service or after major changes such as a crew change, repair or . The shakedown cruise simulates working conditions for the vessel, for various reasons. For most new ships, the major reasons are to familiarize a crew with a new vessel and to ensure all of the ship's systems are functional. A vessel is typically not committed to any timetables or tasks until it completes its shakedown cruise. As such, problems detected during the shakedown cruise can be fixed at minimal cost.