| 摘要 |
Catamaran boat dollies are provided, one for each of the hulls of a catamaran, for moving the catamaran along a beach or other supporting surface. Each dolly has a cradle mounted on a single wheel, the axis of the wheel axle declining outwardly from the cradle to define an included angle with the vertical of approximately 75 DEG . Longitudinal bars of the cradle embrace opposite sides of the associated hull, and the disposition of the wheel and its axle results in a bending or rotational moment which causes the cradle to clampingly engage the hull. Because of the shape of a fourteen or sixteen foot "Hobie" type hull, the catamaran will remain in satisfactory engagement with the dollies as it is moved across the surface, but is preferably provided with a tie-down band for retaining the dolly in place as the catamaran is moved into or out of the water. For a "Sizzler" or "Prindle" type hull the cradle has opposed bars which engage opposite sides of a metal keel, and a tie-down band is provided for preventing the hulls from bouncing from between these bars. A protective coating such as polyvinyl-chloride preferably covers the cradle and other parts of the dolly to protect metal of the dolly and to protect the hulls from abrasion.
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