Sink it with what? they attack it with fishing boats and AK47's you'll need a literal ton of explosives to sink on of those ships.
They can't offload the containers and other than the money in the captain's vault there is nothing of value other than the propane tanks in the galley (that and the med bay is the only thing they raid).
I said "try to sink it" not that they would necessarily succeed. That said if they are on board and have unlimited access to the entire ship it may be possible to sink it without any explosives. Not all ships even require explosives to be scuttled.
>They can't offload the containers
I never suggested that they would. Rather I suggested that they would ransack the ship and cargo looking for valuable components or equipment that is transportable.
