First impression it seems odd that the shipping
channel would be routed so close to the shoreline which close proximity tends to induce such adverse hydrological effects and second the ship was far exceeding a no wake speed and navigating irresponsibly.
The liability is clear as to damages or injuries caused by a collision
or allision with your wake. A vessel's wake is considered a extension of a vessels hull
as to it impacting something or someone.
The title of the video and the article use incorrect terms, the word wake would have been accurate instead of tidal wave.
Solutions are to slow the vessel speeds and / or move the shipping
lane further out from shore. Pretty scary situation, kind of like an unexpected rip current
and a rogue wave
combined at once. Lucky no one drowned.