Passengers travelling to Belfast on the Stena Voyager had to be given life jackets yesterday after a small fire broke out on board.
Smoke began billowing from one of the small engine rooms prompting staff to activate the general emergency alarm at around 11.20am.
The ferry, which left Stranraer at 9.55am, had 555 passengers and 46 crew onboard at the time of the incident.
A spokeswoman from Stena Line confirmed a small fire did break out.
"In line with established health and safety procedures, the General Emergency alarm was sounded for passengers and staff and in accordance with these procedures, emergency life jackets were issued to passengers and staff as a precaution," she said.
"The fire was contained within the confines of the engine room and no passengers or staff were injured as a result of the incident.
"The General Emergency status ended at 11.35am and the vessel continued its journey into Belfast Port."