Dun Laoghaire Marina sits in the southwest corner of the historic harbour of Dun Laoghaire, on the scenic southern shore of Dublin Bay.

Protected behind two inner breakwaters within the harbour's larger 250-acre sheltered anchorage — itself enclosed by two massive piers built in the early 1800s — the marina opened on St Patrick's Day, 2001, and holds a Five Gold Anchor rating.

The facility accommodates up to 820 boats, with berths ranging from 6 to 30-plus metres and a minimum depth of 4 metres at low water springs, making it accessible at all states of the tide.

It serves as the primary yachting hub in Ireland and offers marine fuel, shore power, and fresh water at individual berths. Dun Laoghaire town, with its shops, restaurants, and rail and bus connections to Dublin city centre, is within easy walking distance.