Here are some tools that may help with passage planning:

• Navionics Web App –  Free Navionics nautical charts on your desktop
• VisitMyHarbour – Free on-line raster charts of harbours around the country
• Solent Charts and Tidal Stream Altas
• The Yachtsman’s Guide To Southampton Water and its Approaches

Tides

• The 2018 Cherbourg Tide Table – Needed if you want to use the Reeve-Fowkes Tidal Atlas’s on board
• WillyWeather – Tides in Mercury Yacht Harbour.  Free for planning ahead more than 7 days.
• UKHO Easytide – Free for up to 7 days ahead