Because of the nature of the rocky coast, its best to keep about 1Nm offshore until abeam Maryport. If approaching from the Scottish Coast, pass south of the Two Fleet Bank WCB. The Channel into the harbour is dredged to 2.5m and the safest water is found by using a transit off the north end of Elizabeth Basin Quay and the centre windows of a large conspicuous cream house on the quay side. Turn into the Senhouse Basin when its directly abeam of you - do not cut the corner for the water is shallow. There is a waiting berth to the east of the lock gates, or you may anchor in the approaches to the lock.
Arrival at night is not recommended. It is also not recommended to enter the harbour in strong NW/NE winds as the swell runs dangerously into the harbour.
Marina access is ±3hrsHW, the sill is 2.9m above CD and the gate closes when there’s 1.5m over the sill, giving 4.4m of water in the marina basin.