A schooner is a fore-and-aft rigged vessel with（）.
- Aa single mast
- Btwo masts: with the mizzen stepped abaft the rudder post
- Ctwo masts: with the mizzen stepped forward of the rudder post
- Dat least two masts: a foremast and a mainmast
问题
A schooner is a fore-and-aft rigged ve
参考解析：
分类：常规海事声明与延伸海事声明题库
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