| 摘要 |
The subject of the invention is a boat comprising at least one screw-operated propulsion system (26) and at least one hydrojet propulsion system (28) which comprises a duct (30) extending from at least one water inlet (32) to a water outlet (34), said boat being characterized in that each water inlet (32) is an orifice positioned so that it lies below the surface of the water (24) when the boat is travelling at a speed below a threshold speed and so that it lies above the surface of the water (24) when the boat lifts up and travels at a speed above the threshold speed. |
