Island Harbour Marina sits on the east bank of the tidal River Medina on the Isle of Wight, roughly two miles upstream from Cowes and just above the Folly Reach, in the rural hamlet of Binfield.

Lock gates maintain a consistent operational depth inside the marina, making tidal-state planning essential for arrival and departure. Vessels drawing up to 2. 5 metres can be accommodated, with access windows of up to 4.

5 hours either side of high tide depending on draught. The marina offers over 200 berths for both annual berthholders and visiting craft, with the approach channel clearly marked by port-hand buoys.

Skippers should contact the control tower on VHF Channel 80 when passing the Folly Reach. A holding pontoon extends into the river outside the lock for vessels waiting their turn.

At the marina's eastern end, a nature reserve provides undisturbed habitat for birds and other wildlife.