Ulysees was built at the Finnish shipyard of Aker Finnyards in Rauma, at a total cost of £100 million.
It stands 12 decks high and its gross tonnage is 50,938 tons, towering over other vessels at a height of 167 feet (51 metres) from keel to mast.
With almost three miles of parking space for 1,342 cars or 240 articulated trucks, no other passenger car ferry in the world can match its vehicle carrying capacity.
Ulysses will operate two return sailings between Dublin Port and Holyhead each day with a sailing time of just over three hours. This means that in just one single day of operations, she has the capacity to transport 5,368 cars or 960 articulated trucks across the Irish Sea.