Raymarine LIGHTHOUSE 4, Operation Instructions Manual

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iii. Select [Follow Route] to overlay the pattern on the [Chart app] and
automatically follow the route.
iv. Alternatively, select [OK] to overlay the pattern on the [Chart app]
without following it.
Drift effects on sector search patterns
Set and drift are taken into account when creating sector search patterns.
Some examples are shown below of what impact set and drift can have on
the resulting SAR pattern.
Example sector search patterns
1. Set (Direction): 0°, Drift (Speed): 0 Kts.
2. Set (Direction): 90°, Drift (Speed): 0 Kts.
3. Set (Direction): 0°, Drift (Speed): 0.5 Kts.
4. Set (Direction): 0°, Drift (Speed): 1.0 Kts.
SAR (Search And Rescue) patterns
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