Raymarine LIGHTHOUSE 3, Advanced Operation Instructions

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iii. Return to the Datum Marker in the new location and select Drift position to calculate the
Set (Direction) and Drift (Speed) .
iv. Alternatively, you can use your vessel’s Heading and SOG to define the set and drift by
selecting the (2) Set / Drift shortcut icon.
3. Set Track spacing / Radius, Search Speed, and Leg time
[All 3 variables are dependent on each other. One variable is always the product of the other two.]
i. Select one of the variables by selecting the
(3)
Output icon.
ii. The selected variable will then be calculated as a result of changes made to the other two
variables.
Variable Maximum Value
Track spacing / Radius 5 nm / 5 sm / 5 Km
Search Speed 40 Kts / 46 Mph / 74 Kph
Leg Time 59m 59s
1. CSP Shortcut
2. Set / Drift Shortcut
3. Output
4. Set the number of legs
i. Select the number of legs for your expanding square search pattern.
5. Create search route
[After all the above steps have been completed you can create your SAR pattern.]
i. To create a search pattern, select Create search route in the bottom right of the screen.
ii. The creation page will display your SAR pattern data and its location in the Chart app.
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