In the absence of a route leading from seaward，the conventional direction of buoyage generally follows ______．A.an anti-clockwise direction around land massesB.a clockwise direction around land massesC.an anticlockwise direction around sea massesD.a clockwise direction around sea masses
In the absence of a route leading from seaward，the conventional direction of buoyage generally follows ______．
A.an anti-clockwise direction around land masses
B.a clockwise direction around land masses
C.an anticlockwise direction around sea masses
D.a clockwise direction around sea masses
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材料：When SEA EMPRESS was two or three cables from the Channel entrance，the pilot saw from the changing aspect of the Outer Leading Lights that there was a set to the east．He ordered a course change of 5° to port．The vessel，which was now closing with the Mid Channel Rocks Light Buoy，started to turn to port．The pilot saw the Outer Leading Lights close and then open to the east as the bows entered the channel．The Buoy was very close to starboard and the pilot now saw that the fixed red and fixed white lights of the Outer Leading Lights，the ones indicating the east side of the deepest water in the Channel entrance，were also open to the east．After the bows had passed the Middle Channel Rocks Light to starboard there was a shuddering vibration，then a sound from the deck below of liquid being forced under pressure，accompanied by a strong smell of oil．The helmsman reported that the vessel was not steering and the pilot ordered full astern．The Chief Officer recorded this order and the vessels position，which was 1.4 cables northwest of Middle Channel Rocks Light．SEA EMPRESS，which was trimming by the head and taking a starboard list，continued to run ahead as the main engine was on full astern．There were further main engine movements and the vessel finally lost all way after she grounded again in a position about 3.3 cables south-by-west of the Mill Bay Buoy．The main engine was put to stop．SEA EMPRESS was by this time significantly trimmed by the head and had taken an 18° list to starboard with the starboard fore part of the deck awash and was heading in a northwesterly direction．问题：The course of SEA EMPRESS，when entering the Channel entrance，was most likely in a direction of ______．A.NorthB.EastC.SouthD.WestWhen SEA EMPRESS was grounded the second time，her smallest freeboard was on her ______．A.port side before mid sectionB.port side after mid sectionC.starboard side before mid sectionD.starboard side after mid sectionA conclusion can be drawn from this passage that SEA EMPRESS was grounded at about ______ hours（LT）．A.0200B.0900C.1900D.2200“The pilot saw the Outer Leading Lights close and then open to the east as the bows entered the channel”．This indicates that ______．A.the front Leading Light appeared to move to the left of the rear Leading LightB.the rear Leading Light appeared to move to the right of the front Leading LightC.the front Leading Light appeared to move to the east of the rear Leading LightD.the rear Leading Light appeared to move to the east of the front Leading Light请帮忙给出每个问题的正确答案和分析，谢谢！
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单选题In the Northern Hemisphere a wind is said to veer when the wind（）.AChanges direction clockwise，as from north to east，etcBChanges direction violently and erraticallyCRemains constant in direction and speedDChanges direction counterclockwise，as from south to east，etc
单选题The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.Acloud movementBvessel headingCwavesDswells
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