A.vessel being towed
B.fishing vessel engaged in trawling
C.vessel at anchor warning you of her location
D.power-driven pilot vessel on station underway
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A.falls
B.rises
C.is steady
D.is unreliable
A.true directions
B.compass error
C.deviation
D.magnetic directions
A.the designed area
B.the designated area
C.the indicated area
D.all area over the world
A.Notices to Mariners
B.Sailing Directions
C.List of Lights and Signals
D.Guide to Port Entries
A.GL WNG
B.GEN SYN
C.STM WNG
D.TY WNG
最新試題
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
Generally，（）are used as the track charts on the high sea，（）are used for harbors，inland waters and coastal areas．
On the approach of a warm front the barometric pressure usually（）.
Weekly Notices are dated for the（）appropriate to the week they are issued on the UKHO website.
For what purpose would using a Lambert conformal chart be more convenient than using a Mercator?（）
The broken magenta line which runs parallel to the shorebetween Roanoke Point and Mattituck Inlet marks a（）.
The Daily Memorandum contains information on（）.
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（）.
Many navigational warnings are of a temporary nature，but others remain in force for several months or may be succeeded by（）.
The charts show two dashed lines crossing the river justsouth of St. Catherine Bar Light. What does this indicate? （）