The boat has been used by the Australian navy
Condor Ferries has bought a bigger boat to operate on its route between Jersey and the French seaside town of St Malo.
The company, which is the only one to offer a ferry service on the route, said it would increase capacity by up to three times.
Called Condor Rapide it will replace the existing Condor 10, and is expected to come into service for the spring bank holiday.
It is an ex-Australian navy vessel, known then as HMAS Jervis Bay.
The boat was the first large catamaran to be used in a naval capacity.
It was used in peacekeeping missions in East Timor, Asia, for transporting troops and aid.