Creating A Sector Search Pattern - Raymarine LIGHTHOUSE 4 Operation Instructions Manual

Creating a sector search pattern

To create a Sector Search pattern follow the steps below:
1. Select [Sector Search] from the [Search Pattern] options: [Chart app >
Menu > Navigate > Search patterns]
2. 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.
3. 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
4. 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
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(2) [Set / Drift shortcut] icon.
(3) [Output] icon.
ii. The selected variable will then be calculated as a result of changes
made to the other two variables.
Variable
Track spacing / Radius
Search Speed
Leg Time
1. [CSP Shortcut]
2. [Set / Drift Shortcut]
3. [Output]
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 the [Create search route] button
in the bottom right of the screen.
ii. The creation page will display your SAR pattern data and its location
on the Chart app.
Maximum Value
5 nm / 5 sm / 5 Km
40 Kts / 46 Mph / 74 Kph
59m 59s