East Cowes Marina sits on the eastern bank of the River Medina, approximately 500 metres south of the Cowes floating bridge on the Isle of Wight.

It is the third marina encountered when entering the Medina, and is accessible around the clock with no tidal restrictions. The marina offers several hundred berths, with a substantial proportion reserved for visiting boats.

Contact is via VHF Channel 80, call sign "East Cowes Marina." Boats arriving by sea can approach via the main Western Channel or the small-craft Eastern Channel, which has tidal depth gauges on the entrance piles.

Several marine businesses operate in the vicinity, and fuel is available on the west bank of the Medina from the Cowes Harbour Fuels barge or Lallows pontoon.