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Most effective when location of search object is accurately known. |
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Search area to be small. |
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Used to search a circular area. |
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Center is datum position. |
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Datum may be marked by dropping a suitable marker, such as a life buoy. |
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Search radius is normally 2 - 5 n. miles for vessels. |
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Each turn is 120°, normally to starboard. |
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Second search leg is 30º off from the first leg. |
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CSP (Commence search point) is one side of the circular search area. |
