在大桅作业时采取附加安全措施。
然而，通常单桅艇被认为不如百慕大帆有力，因此在现代帆船中使用得很少。
Generally a cat rig is not considered as powerful as a Bermuda rig, however, and is more rarely used in modern boats.
帆船运动中船按其帆和桅杆不同而分类，如单桅多帆船，双桅或三桅纵帆船，双桅船，及大双桅船。
The sailing boats are grouped according to their sails and masts, such as sloop, schooner yawl, and ketch.
其中一个怪物是一条三桅战舰，一个本来应该是在海上才出现的庞然大物。
One of the battle monsters I remembered quite clear, it's a three masts battleship which should only be found in the ocean.
桅架的重量较常规井架要大，因此海洋钻井中不常使用，因为海洋钻井时比陆地作业时更关注重量。
They suffer from being heavier than conventional derricks and consequently are not usually found in offshore environments, where weight is more of a concern than in land operations.
桅架的重量较常规井架要大，因此海洋钻井中不常使用，因为海洋钻井时比陆地作业时更关注重量。
They suffer from being heavier than conventional derricks and consequently are not usually found in offshore environments, where weight is more of a concern than in land operations.
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