At the time of her introduction, she was the largest car ferry operating in Northern Europe.

Isle of Inishmore was constructed by Van der Giessen de Noord in Rotterdam, the Netherlands, at a cost of IR£60 million.

Each round trip between Rosslare and Pembroke requires 25 tonnes of marine diesel oil.

On 30 July 2008 a fire broke out on board the Isle of Inishmore at Pembroke Dock at approximately 02.30am, in a thermal oil boiler located adjacent to the engine room of the vessel.

The function of this boiler is to preheat the fuel oil prior to its use in the ship's main engines.