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Only when correction by hand is impossible,____be provided.

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The limit of an area that is of the same depth in water is indic

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The chart symbol indicating that the bottom is coral is____.

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Navigational charts are____frequent changes,the important one of

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Admiralty Charts are published in ____.

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A revised print of a chart is made____.

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Charted depth is the____.

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Many of the soundings shown on the chart are derived from____. U

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On this chart only the principal____to navigation are shown.

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____are published for the correction of Admiralty Charts.

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