| 摘要 |
Boat propulsion unit, comprising two outboard Propeller drives (3,4), having anti-cavitation plates (7), which are coupled to each other via a tie-bar (10) with a wing profile. In the trim position of the stern drive for low speed, the wing profile has an angle of attack in order to exert a lifting force on the stern drives under the influence of the water flowing past it.
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