A、the best fix is obtained by using a tangent bearing and a range
B、and using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearings
C、and using ranges，the most rapidly changing range should be measured last
D、and crossing a radar range of one object with the visual bearing of a second object，the two objects should be 80°to 110°apart
更多“When using the radar for navigating（）.”相关的问题
A、should never use radar bearings B、should only use radar bearings when the range exceeds the distance to the horizon C、can use radar information from one object to fix the position D、must use information from targets forward of the beam
A、can use radar information from one object to fix the position B、should never use radar bearings C、should only use radar bearings when the range exceeds the distance to the horizon D、must use information from targets forward of the beam
A、The Master of the vessel must be on the bridge when the radar is in use B、The radar equipment is only required to be used in restricted visibility C、The use of a radar excuses a vessel from the need of a look-out D、This equipment must be used to obtain early warning of risk of collision
A、Only a radar expert can determine if the radar is operating B、All radars have indicator lights and alarms to signal improper operation C、A radar range compared to the actual range of a known object can be used to check the operation of the radar D、The radar resolution detector must be energized to check the radar
A、Increase the radar gain to pick up weak echoes through the rain B、Increase the STC setting to reduce close-in spurious signals C、Navigate as though the effective range of the radar has been reduced D、Increase the range of the inner and outer guard rings
A、immediately when the contact is noted on radar B、only if the radar scope is watched constantly C、after the contact has been marked at least twice D、by an occasional glance at the radar
A、A.She must use this equipment to obtain early warning of risk of collision B、B.The use of a radar excuses a vessel from the need of a look-out C、C.The radar equipment is only required to be used in restricted visibility D、D.The safe speed of such a vessel will likely be greater than that of vessels without radar
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