A.in
B.on
C.with
D.by
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A.is decreased
B.decreased
C.decreases
D.are decreased
A.vertical distance from the tidal datum to the ocean bottom plus the height of the tide
B.vertical distance from the tidal datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
A.capital letters
B.italics
C.boldface print
D.underlined letters
A.conspicuous
B.inconspicuous
C.a government facility or station
D.a radio transmitter
A.does not change
B.improves rapidly
C.improves only slightly
D.becomes poor
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Periodic publications notifying changes in，or additions to，previously published navigational data are（）.
Weekly NMs are available without subscription from appointed（）.
In revised editions of Admiralty charts the（）are corrected first．
For what purpose would using a Lambert conformal chart be more convenient than using a Mercator?（）
The height of a tide can be increased by（）.
Weekly Notices are dated for the（）appropriate to the week they are issued on the UKHO website.
On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a（）.
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（）.
On a nautical chart，the inner ring of a compass rose indicates（）.
What is the significance of the broken magenta lines which roughly parallel the shore between Roanoke Point and Orient Point on Long Island（）.