A.dead-reckoning position
B.running fix
C.estimated position
D.fix
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A.fix
B.dead-reckoning position
C.running fix
D.probable position
A.plane tangent at one point
B.cylinder tangent at one parallel
C.cone tangent at one parallel
D.series of cones tangent at selected parallels
A.when at anchor
B.only when making way
C.at any time when underway
D.only when the identifying lights are not being shown
A.aground
B.at anchor
C.not under command
D.being towed
A.average wind conditions
B.tidal currents
C.magnetic variation
D.average limits of field ice
最新試題
The Coast Radio Stations are found in（）.
Lines drawn through points on the Earth having the same atmospheric pressure are known as （）.
Aboard a survival craft，ether can be used to（）.
To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is（）.
A sweep oar is an oar that is（）.
After launching，an inflatable raft should be kept dry inside by（）.
What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.
After being launched from a vessel，totally enclosed survival craft which have been afloat over a long period require（）.
A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.
The information on ocean voyage planning with routeing details for powered and sailing vessels is likely found in（）.