Well, technically they're still on the coastline. Just like docks, marinas, and even cities, they tend to get moved inland along harbors and estuaries where av

Well, technically they're still on the coastline. Just like docks, marinas, and even cities, they tend to get moved inland along harbors and estuaries where available, for protection from ocean weather and waters. Even San Francisco ('s city center) is on the Bay-facing side of the relevant landmass.