Scott Hedrick wrote:

My brother and I used to sink battleship models that way. Once surfaced and
dried out again, a piece of paper coated with glue made it seaworthy again.
We had many models that started with styrene and ended with paper mache.


There is a group of ship modelers who build radio controlled warships
out of balsa wood, plywood, and Silkspan fabric that are themselves
equipped with remote control BB guns and go out sailing around sinking
each other.
The radio gear is kept in a BB protected waterproof container so that
it doesn't get damaged when the ship goes down.
http://www.modelwarshipcombat.com/
This must be a _lot_ of fun! :-)

Pat