[Paladin2]

Are these waves measured crest to trough or half?

the pic looks to be ~30 ft at that point.

[Jeff Chandler]

Are these waves measured crest to trough or half?

We always measured waves from the crest to the trough WHEN THE WAVES BREAK, not at the greater height when it is about to break, so most waves measure smaller than you would think. That being said, that's a big one.