单项选择题
A.a vessel meeting another head-on
B.a vessel overtaking another in a narrow channel
C.a vessel crossing the course of another
D.the give-way vessel in a crossing situation
单项选择题 A sailing vessel shall not impede the safe passage of a（）.
单项选择题 A sailing vessel is overtaking a power-driven vessel in a narrow channel，so as to pass on the power-driven vessel’s port side. The overtaken vessel will have to move to facilitate passage. The sailing vessel is the（）.
单项选择题 A power-driven vessel pushing aheador towing alongside displays navigation lights and（）.