So the article he is stating that there is a yacht full of unattended valuables?
time to bring back submarine warfare
Go for a swim with a hand drill.
The ecological effect of sinking this would be offset by the longterm reduction in pollution it creates anyway.
It’s probably a steel hull. The easiest way to sink it would probably be to break some through-hull connections below the waterline. Not much you can do from outside other than perhaps plugging the bilge pump’s output.
Or you could wait till a big storm and cut the docklines.
make sure to use paper straws though
Death to America