Raymarine LIGHTHOUSE 3, Advanced Operation Instructions

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Note:
• (1) In this example the paths will still cross within the Intercept distance , so the graphics are
still displayed.
• (2) In this example the paths will no longer cross within the Intercept distance , so the graphics
are not displayed.
Example scenario 2 — Target vessel moving faster than your vessel
Note: These scenarios are examples provided for guidance only.
In certain situations, when the target vessel is travelling faster than your vessel, there may be more
than one opportunity for your paths to cross within the
Intercept distance . If this is the case then a
second Interception zone is displayed.
1. 1 st — The first Interception zone (displayed closest to the target vessel) represents a bow-to-bow
collision.
2. 2 nd — The second Interception zone (displayed farthest from the target vessel) represents the
target vessel running you down from behind.
When altering course and speed, both Interception zones must be avoided.
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