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[单选题]
在有流河段,顺流船采用抛锚法掉头时,当船身转至与流向呈()时,抛下艏锚。
A.20°~30°
B.35°~40°
C.80°~90°
D.140°~160°
查看答案
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A.20°~30°
B.35°~40°
C.80°~90°
D.140°~160°
A.船首尾线与流向平行时下锚
B.船首尾线与流向垂直时下锚
C.船首尾线与流向成30º角时下锚
D.船首尾线与流向成60º角时下锚
A.①②③④
B.①②③⑤
C.②③④⑤
D.①②③④⑤