The Naval Service's newest ship, LÉ Samuel Beckett, has sailed into the Naval Base in Haulbowline in Cork harbour.
The ship is one of two commissioned by the Government and being built for the Naval Service at Appledore in southwest England.
The contract for the two ships is worth €100m.
LÉ Samuel Beckett will be commissioned at a ceremony in Dublin on 17 May.
The ship is 90 metres long and weighs 2,000 tonnes.
It is the Naval Service's biggest ship.
LÉ James Joyce is due for delivery this time next year.