This list identifies active and former maritime vessels of the Irish state, both civilian and military. This list is incomplete.
The following vessels have served with the Naval Service:
The Marine and Coastwatching Service was a naval service that operated during The Emergency. In 1946, the service was integrated into the Defence Forces as the Naval Service and these ships were sold off.
The Coastal and Marine Service was a short-lived naval service that operated during The Irish Civil War. The Service was disbanded in March 1924 after only several months of existence, and all of its ships, except Muirchú, were sold off.
There were also five unnamed patrol boats of unknown type used for river patrol.