I'd bet the effect is a lot more pronounced on the more recent generations of ships. There are quite a few cruise ship and container ships that berth here in the ports of Long Beach and Los Angeles. The very high and sheer flat sides of the ships when compared to the older pre-1970s craft have often made me wonder about the effect of winds against such a broad expanse of surface. When I was growing up in San Francisco, I would walk down the Embarcadero on windy days and see the "old fashioned" ships rock and roll from the winds and those ships had very low sides...
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