A.calms
B.light winds
C.strong winds
D.precipitation
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A.on a collision course
B.the vessels will pass within one mile
C.it becomes apparent to her that the give-way vessel is not taking appropriate action
D.the relative speed of the vessels indicates collision in less than six minutes
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
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
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LOW ABOUT 300 MILES SOUTHWEST OF LISBON 1004 MOVING SLWLY SOUTHEAST COMMA FILLING 1006 BY MIDNIGHT.This phrase is likely to be under the heading of（）.
What is the most important source of information to be used in correcting charts and keeping them up to date（）.
Periodic publications notifying changes in，or additions to，previously published navigational data are（）.
The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
Which would influence a magnetic compass（）.
Weekly Notices are dated for the（）appropriate to the week they are issued on the UKHO website.
The broken magenta line which runs parallel to the shorebetween Roanoke Point and Mattituck Inlet marks a（）.
RYUKYU S TO SE 6 BEC 4－5.ISOL SHWRS.SEA 3 M BEC 2 M.SWELL SE 3－4M.This description is likely to be under the heading of（）.
Navigational warnings are published according to（）.