Good lord, what a username - not sure I could pronounce it if you told me ten times. You are correct about the waves though, as a blue water sailor it was the southern tip of Africa that was considered the breeding ground for rogue waves once upon a time.
Hi from a blue-underwater sailor :)
And ya, when you live on the sea 30 footers are not rare and 60 footers happen, though to be fear in the deep water that is the difference between the peak and the valley, not the same as a wave coming up on land.