Originally Posted by MPerson
When a tidal wave is heading to the shore, before it hit's the underwater shoreline, the whole wave travels underwater. So boats will not feel anything since the wave is all under the surface. Once it hits the continental slope (or whatever its called), the wave rises up. So you technically can ride "over" the wave.
except it was a tsunami and supposedly the boat tipped over seconds after the pic was taken
from what I've read, the tsunami usually isn't as high as a tidal wave, but has more force coming onto the shore.