The forward mast head light shall be placed ant a minimum height of 12M above the hull , in the drawing is 11.84M indicated(COLREG 72 ANNEX12(a)).是什么意思_The forward mast head light shall be placed ant a minimum height of 12M above the hull , in the drawing is 11.84M indicated(COLREG 72 ANNEX12(a)).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句