Aha!

They towed the life boat and in the calm in back
of the destroyer (the fantail) took em out. If you have ever
been out on a boat in rough water you roll so much
in so many diff. directions... I just did not see how
it was possible to anticipate where a head would
be to blow it up. No one missed. It is a very random motion and
they had said the water turned very rough.
I just did not see how someone did not miss.
Now I get it.

Quite clever. The pirates gladly accepted
being towed thus sealing (no pun intended)
their fate. Incredible shooting nonetheless.