The Brown water Navy, or shallow water navy, raised my interests after working in a Jacuzzi Factory and building Jet boat units for Patrol Boats..They had contracts to build them for several countries, and we used a lot of very high grade metal to make the units..Titanium, Stainless steel, magnesium, and others were used to fill the contracts..there is no telling How Much each unit cost for the gov... They also never described the boats to be fitted..only we had to hold 225-250 hp diesel powered engines..Later proven to be Detroits...What do you know about the PBR boat family, the Zippo and or the Mortor.{SP} class of boats??..OG.