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【单选题】
S1:MV Blue Whale, this is Avonport Port Control. Nets with buoys in this area. Please navigate with caution. Over.S2:Avonport Port Control, this is Blue Whale. I will navigate with caution. Over.S1:MV Blue Whale, this is Avonport Port Control. Keep clear of the fairway. Search and rescue in progress. Over.S2:Avonport Port Control, this is Blue Whale. I will keep clear. Over.S1:MV Blue Whale, this is Avonport Port Control. You course is deviating from the radar reference line. Over.S2:Avonport Port Control, this is Blue Whale. What course do you advise? Over.S1:MV Blue Whale, this is Avonport Port Control. Advise make course 120 degrees. Over.S2:Avonport Port Control,.this is Blue Whale. Making course 120 degrees. Over.S1:MV Blue Whale. This is Avonport Port Control. There is a large tanker to the north of you leaving the fairway. You must wait for her to cross ahead of you. Over.S2:Avonport Port Control, this is Blue Whale. I will wait for the large tanker to clear. Over. Q2:Why is MV Blue Whale advised to keep clear of the fairway?
A.
There is a large tanker in the fairway.
B.
There is a fishing vessel in the fairway.
C.
Naval exercise is in progress.
D.
Salvage operation is in progress.
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