The DUBLIN SWIFT travels between Dublin and Holyhead in 135 minutes and is the fastest service across the Irish Sea.

DUBLIN SWIFT re-started its seasonal operation on 16 April 2025, when it transitioned to using HVO.

HVO is a completely fossil-free biofuel made from waste by-products and derived products not intended for human consumption from the food industry.

It can be used to power diesel vehicles which means it does not release any additional carbon emissions into the atmosphere and is a cleaner and more sustainable fuel option.

By utilising HVO, Irish Ferries said it is not only reducing its carbon emissions but is also contributing to the circular economy by repurposing waste materials.

Over the coming months Irish Ferries aims to ramp up usage of HVO as a diesel alternative to 100% on all four of the ship's engines, which would result in up to 90% less carbon emissions compared to conventional diesel.

Andrew Sheen, Managing Director at Irish Ferries, said the move not only demonstrates the company's commitment to innovation but also highlights its dedication to reducing carbon emissions and protecting the environment.

"We are proud to partner with Circle K as a supplier in this endeavour and look forward to seeing the positive impact of this transition," he added.