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.
A 15 degree list indicates significant flooding and loss of buoyancy. Coupled with strong winds and large waves from a slow moving hurricane capsize and catastrophic hull failure are strong possibilities. In storm seas the last thing you want to be is top-heavy and listing.