104. Navigational charts are _______frequent changes, the important oneof which are promulgated byAdmiralty Notices to Mariners.
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The revision date of a chart is printed on which area of the chart? ()
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Navigational charts are subject to frequent changes,the important ones of which are promulgated by ().
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126. Many navigational warnings are of a temporary nature, but others may in force for several months or may be succeeded by _____.
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39. A mercator chart is a ______
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62. A true bearing of a charted object,when plotted on a chart,will establish a ______.
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