Raymarine LIGHTHOUSE 3, Advanced Operation Instructions

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Creating a sector search pattern
To create a Sector Search pattern follow the steps below:
1. Set Commence Search Point (CSP)
i. Manually input the CSP coordinates; a Range and Bearing are displayed to direct your vessel
towards it.
ii. Alternatively, set the CSP as your vessel’s current location by selecting the (1) CSP Shortcut
button.
2. Set Drift
i. Drop the Datum Marker in the water and select Marker dropped .
ii. Wait for the Datum Marker to drift through the water.
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.
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