The most heavily defended coast in the west is that on either side of the Straits of Dover, and next in order of strength are the Seine estuary and the port of Cherbourg.
西部沿岸防御能力最强的地区是多佛尔海峡两侧，其次是塞纳河河口和瑟堡港。
2
The minimal slope of the estuary and one of the world's highest differences between tides accentuate the phenomenon: the sea is approaching the coast like galloping horses according to Victor Hugo.