Not how, but why....?
Answer $$$$
I am sure the crew was a bit upset over the captains decision to head into an unpredictable storm.
If they lost power and are as top heavy as these vessels are, the contents of these containers and or the containers may be showing up on the SE Coast soon.
IMO Their only hope was to dump the containers overboard. They are a huge sail, way too top-heavy and no power?? Very bad situation.