The basic idea is: BB sized to 1/4″ steel ball-bearings are fired by CO2 cannons, which can rotate and depress, tearing holes in the thin (up to 1/8″) balsa wood skin covering 85% of the 1:144 scale ship’s hull. When there are enough leaks that the bilge pump system is overcome by the water, the ship sinks, is recovered, patched, and battled again. Points are scored for cargo runs, hits, sea control, and sinks.

Learn more in this Servo Magazine article.
December, 2005, Servo Magazine.
Reprinted on NTXBG.org by permission from T & L Publications, 430 Princeland Ct, Corona, CA 92879