| 摘要 |
The invention comprises a stepped bottom structure of a boat, in which the steps (5) are mainly straight. The number of the steps is from 2 to 4, preferably 3, and the angle between the mainly straight edge (8) of the step and the keel (1) is from 20 DEG to 60 DEG , preferably from 20 DEG to 45 DEG . In addition, the bottom structure includes rising laths (10), in which the side (19) facing the keel (1) is narrower than the side (20) facing the side of the boat. |
