Ferry services from Cairnryan to Belfast weree suspended on Tuesday after a Stena Line boat collided with part of the terminal when it came into dock early in the morning.
The incidentled to the halting of sailings on the Irish Sea to allow the vessel to be investigated for damage.
In a statement, Stena Line said there were no injuries and all passengers and crew had disembarked as normal.
All sailing were cancelled unti l Thursday’s 7.30pm crossing.
A statement from the company said: “Stena Line’s Superfast VII vessel made contact with the fenders which has resulted in the ship remaining moored at the port while a full inspection is carried out.
“There were no injuries to customers or staff and all car and freight traffic disembarked safely from the ship as normal.
“All relevant port and marine authorities have been contacted as part of Stena Line’s standard operating procedures.
P&O sailings on the Cairnryan to Larne route were also delayed due to the high wind son Wednesday.