A.mark the position of a lost mooring
B.determine your vessel's sideslip underway
C.determine your speed through the water
D.indicate location of a man overboard
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A.Conspicuous
B.Permanent
C.Preliminary
D.Temporary
A.From
B.By
C.on
D.With
A.either，or
B.neither，nor
C.another，nor
D.other，or
A.Amendments to Admiralty Sailing Directions
B.Amendments to Admiralty List of Lights and Fog Signals
C.Amendments to Admiralty List of Radio Signals
D.Supplement to Guide to Port Entry
A.Admiralty Sailing Directions
B.Admiralty List of Signals
C.Mariner's Handbook
D.Admiralty Notices to Mariners
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（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
The height of a tide can be increased by（）.
The broken magenta line which runs parallel to the shorebetween Roanoke Point and Mattituck Inlet marks a（）.
Vessels should not anchor or trawl in the vicinity of pipelines and are（）in the pipeline area shown on the chart.
Steam smoke will occur when（）.
Many navigational warnings are of a temporary nature，but others remain in force for several months or may be succeeded by（）.
The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
What is the significance of the broken magenta lines which roughly parallel the shore between Roanoke Point and Orient Point on Long Island（）.
Section V of the ADMIRALTY NOTICES TO MARINERS is（）.
For what purpose would using a Lambert conformal chart be more convenient than using a Mercator?（）