Milford Marina sits on the Milford Haven Waterway in Pembrokeshire, Wales, positioned within Hubberston Pill at coordinates 51°42. 25N 05°02. 02W. Owned by the Port of Milford Haven, it offers 328 berths for both resident and visiting vessels.

Access is controlled through a set of lock gates, staffed around the clock. A freeflow period operates for two hours before high water at Milford Haven, when all lock gates are open for free passage.

Outside this window, scheduled access and exit locks are available, coordinated by marina staff via VHF channel 14 (Pier Head Control).

A holding pontoon called the Mackerel Stage sits immediately east of the lock gates, available for vessels waiting for the next lock cycle.

On-site services include fully equipped boatyards, hoist lifts, chandlery, boat repairs, fuel, waste disposal, and shower and laundry facilities. A 4-knot speed limit applies within the marina basin.