red sector
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red sector
[′red ‚sek·tər] (navigation)
A sector of the circle of visibility of a navigational light in which a red light is exhibited; such sectors are designated by their limiting bearing, as observed at some point other than the light; red sectors are often located so that they warn of danger to vessels.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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