Refitting or refit of boats and marine vessels includes repairing, fixing, restoring, renewing, mending, and renovating an old vessel. Refitting has become one of the most important activities inside a shipyard. It offers a variety of services for an old vessel of any size and kind starting with the construction itself and what is added to it, such as hardware, electric & hydraulic systems, entertainment systems, etc.[citation needed]
Ship refits can range from relatively small changes to and including cutting the ship in half to facilitate near-total overhauls and redesign of interior spaces and modification or replacement of engines, systems or other equipment.[1]
Refitting can be divided[according to whom?] into several main subjects: