Its competitive practice, as well as the use of security personnel to carry out the replacement of its crewmembers, were described by many in the industry as a "blueprint" for P&O's 2022 sacking of hundreds of its seafarers.

As a result, the company put itself in a position to attract increased passenger and freight business, influenced by the modern facilities and improved reliability of each vessel and the extra capacity that was available on board.

On 31 May 2016, ICG announced that it had entered into an agreement with the German company Flensburger Schiffbau-Gesellschaft to build a cruise ferry MV W.B.

[8][9] This is the first such route that Irish Ferries operates which does not call in Ireland, with Dover and Calais being two major UK and French ports respectively.

[14][15] In 2005, Irish Ferries began to re-register its fleet under flags of convenience,[16][17] enabling the company to save approximately €11.5 million[18] by replacing crew with agency staff.