A revised print of a chart is made ______.A.after every major hydrographic survey of the area covered by the chartB.when there are numerous corrections to be made or the corrections are extensiveC.when a low-stock situation occurs and minor corrections are madeD.every two years to update the magnetic variation information

A revised print of a chart is made ______.

A.after every major hydrographic survey of the area covered by the chart

B.when there are numerous corrections to be made or the corrections are extensive

C.when a low-stock situation occurs and minor corrections are made

D.every two years to update the magnetic variation information


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