FIRST PLACE: TWIN INBOARDS
Hull of winning boat Moppie (large drawing above), designed by C. Raymond Hunt, has four underwater strakes on each side of bottom which resist rolling action plus a sharp V-shaped hull from bow all the way back to stern. These innovations produce much softer ride than conventional hull with flat stern sections. Twin propellers (above) from inboard engines power boat.
SECOND PLACE: OUTBOARD-INBOARD
Stern view of second-place boat Aqua Hunter, which is also a V-bottom design by Hunt, shows how outboard-type Aquamatic shaft and props were mounted on boat. Power for props comes from Volvo engines inside hull. Advantage of design is that shaft will snap upward if it strikes underwater object, thus avoiding damage to propeller. Prop shaft units turn to steer the boat.