| 摘要 |
A boat trailer having a frame, a wheel and axle unit supporting the frame, a front keel and hull supporting unit mounted on the frame, and a rear cross member, a roller bunk apparatus having a pair of identical roller bunk units each mounted on a side of the longitudinal axis of the trailer; with each roller bunk unit comprising an elongated tubular member disposed parallel an adjacent frame member, and a pair of elongated tubular elements mounted on each member in longitudinal alignment, with the rear element pivotally mounted, and with a plurality of roller units mounted on each element in longitudinal spacing and alignment, and with plate units movably mounted at a rear end of each element for engagement with a trim tab portion of the boat hull.
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