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JRB Operating Procedures Outline
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Commenced at edge of search area.
CREEPING LINE SEARCH (ZIG ZAG P ATTERN)
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Used for a square or rectangular area.
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Gives immediate coverage of area. (If a target’s probable location is assumed, this can cover that
area quickly dependant on the size of the probability area).
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Used for a large area where datum is unknown or has a large error.
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Very effective to search back to a target estimated to be travelling towards you.
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Commenced at edge of Search area.
Figure 16: Creeping line search pattern
SQUARE SEARCH
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Accurate Datum Point known.
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Short time elapsed from first sighting.
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SRU on location.
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Use of a survivor locates and further information that there are other targets in the water.
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Commenced at Datum Point.
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Datum - the most probable location of survivor.
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Each pattern needs to be applied to each set of circumstances.
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If the target location is known fairly accurately, the square search could apply best allowing for the
drift of the object. As the target drifts the SRU will also drift.
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