I saw a boat in Florida, built of thick fiberglass
without core.

It was at leat partially bulletproof. I saw pictures
which showed it stopped a .357 magnum. The pictures
showed radial cracks and a crater in the center, and
partial penetration. The owner/seller, offered to let
me take a shot at it if I agreed to fix the damage.
I don't know what sort of ammunition he used. I
could not tell if the bullet bounced or was embedded.


I expect a .223 ball round would penentrate it.


(JAXAshby) wrote

By the way, some of the older glass hulls can stop
a full load .357. One inch of fiberglass is stronger
than you think.

not even close. a long time ago -- i.e. "old glass hull -- I fired a .22 into
fiberglass from a boat and the round went through almost as if it were
cardboard.