| 摘要 |
A boat is provided with a steering arrangement comprising a main steering system and control-surface subsystem. The control-surface subsystem comprises a control-surface assembly 10 attached to the stern of the boat and comprising a trim tab 11 pivotally connected to the stern of the boat to enable the trim tab to pivot about an axis substantially parallel to the plane of the trim tab and lying within ± 30 degrees of the horizontal, and a skeg 21 rotatably mounted by the trim tab such that the skeg is located below the trim tab. The control-surface assembly further comprises a trim-tab operating arrangement 14, 15, 16 for pivoting the trim tab to raise and lower the trim tab, and a skeg operating arrangement 23, 24, 25 operable, selectively in coordination with, or independently of, the main steering system, for rotating the skeg to steer the boat. |
