Passenger Ship Technology (subscription only) Q1 2015 has a report on Irish Ferries. Part of this details the modifications undertaken to Oscar Wilde to comply with the SECA regulations. They report she now switches from heavy fuel oil to marine gas oil mid-voyage. This meant they had to fit a new fuel treatment plant to handle the higher quantites of MGO consumed, and convert tanks to MGO usage. The article also discusses some of the other technical work done to the rest of the fleet, such as using a new process borrowed from the chemical industry to repair the stern thruster tunnel on Ulysses.