Our trip to France July 2006, Trip from Jersey to St Malo took about 2 hours then we spent 7 days on the river Rance, 2 nights at Plouet marina, 2 nights at Dinan and 2 nights at Levy marina, 100 mile round trip and Seaspray did not miss a beat, great holiday.
Dinard barrage lock
Once the vessels enter the lock, the road lifts up to ensure masts are clear, before filling with water.