A. 7 B. 8 C. 9 D. 10
A. 转两个方向角度 B. 和立铣头各转一个角度 C. 沿斜面与基准面交线的法向倾斜一个角度
A. ballast deep tanks if they are slack B. transfer ballast athwartships C. pump out double bottoms D. fill double bottoms from deep tank