Art Mosher wrote:
Curiosity? Should not the Tsunami wave affect a high seas cruising
boat? I have seen no mention of it anywhere; but would have thought
there would be some damage to boats at sea. ??

- Art

Tsunamis at sea are almost unnoticeable, unless they reflect from
shore and meet themselves somewhere like a standing wave on an antenna.

They are a long, large, deep waves which only become catastrophic as
they hit shallow water, which makes them pile up as they try to
bounce back out to sea. Lissajous studied wave interference and his
theories predict constructive and destructive interference of waves,
which work similarily for water or radio waves.

Terry K