Sandwich Marina sits on the River Stour on the outskirts of Sandwich, a historic Cinque Port town in Kent.

The marina provides moorings, slipway facilities, boat lifts, storage, and hardstanding, making it a practical base for recreational boaters on the Kentish Stour.

Access to the river from the sea begins at Pegwell Bay, approximately one nautical mile southwest of Ramsgate Harbour. Vessels follow the Ramsgate Channel to the Fairway buoy before navigating upstream through the winding river channel toward Sandwich.

The river today serves recreational boaters, commercial operators, and liveaboards, having long since silted up from its medieval days as a major trading waterway.