Tom wants to explore the estuary in his dinghy or keelboat starting from Chidham Marina where he stores his boat. He exits Namley Harbour and sails west along the coast to the parking area on the foreshore in Namley, a distance of approximately 6 nautical miles. Local high water at Namley is around 0618hrs and 1848 hrs, but Tom will need to look at the high-water times for Victoria because the tidal diamonds on the chart refer to that port. High water at Victoria on 17 August is around 0506hrs and 1750hrs.