单项选择题
A.shall have the liberty to anchor
B.shall avoid anchoring
C.shall moor to a buoy when necessary
D.shall keep anchoring
单项选择题 In a crossing situation，a stand-on vessel which is forced to take action in order to avoid collision with a vessel on her own port side shall，if possible，avoid（）.
单项选择题 In a crossing situation，the stand-on vessel should normally（）.
单项选择题 In complying with the Rules，of what must the mariner take due regard?（）.