We didn’t have the Unlimited Hydroplanes this year, instead a good turnout of Grand Prix and H-350 boats from the HRL based in Quebec. So for the first time in decades, all of the racing was run by piston-powered boats (no turbines.)
The Grand Prix boats run 468 c.i. big blocks, supercharged and running on methanol. These things almost- but not quite- sound like a Top Fuel dragster when they fire up.
The H-350s use Chevy small blocks of no more than 358 c.i., carbureted, running on race gas.
Test firing one of these beasts:
GPs leaving dock for a heat:
the final GP heat, all boats coming ‘round for the “flying start”
the H-350 consolation heat A:
and a visit from the 1957 Miss US, with her Allison V-1710 V12 engine.