| 摘要 |
A multi-hull sailing vessel has a centre hull provided with a mast and sails and respective pontoons carried by a transverse pontoon suspension beam that is pivoted to the centre hull. Relief breaking means is provided and normally prevents pivotal movement of the centre hull with respect to the beam, but can release to allow the centre hull to heel over and spill wind from the sails in abnormal weather conditions. The vessel is also provided with keel that can be raised and lowered under power according to sailing conditions, and locked in place.
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