Visit the North Texas Battle Group's website, http://ntxbg.org, for more information. We are a Big Gun Model Warship Combat club located in the DFW Metroplex. The ships are 1/144 scale and fire ball bearings using CO2 powered cannons. When the balsa wood armor becomes damaged to the point that the water leaks in faster than the bilge pumps can pump it out, the ship sinks!