Tidal Harbours

Make your way through French harbour gates and locks the easy way. Tidal Harbours lists every lock, gate, sill and drying harbour of the French Channel, the Atlantic coast, Belgium, Netherlands and the Channel Islands. For a lock or a gate harbour, it shows you the times for any day you like, easily. For a sill or a drying harbour, it shows when you can pass, from your boat's draught and from the heights of water computed from the local tide. WHAT IT DOES •Today's access windows, harbour by harbour , to the minute, for 187 harbours with a lock, gate or sill — read at a glance on your watch or on your phone's widget, without opening the app • The depth of water over the sill, worked out from YOUR draught and YOUR safety margin • The water under the keel, worked out from your draught, the tide, the day, the hour and the depth of the bottom • How long you stay aground, and when you float…