Raymarine LIGHTHOUSE 3, Advanced Operation Instructions

Page: 155 / 450

In the Collision Avoidance menu you can change the settings to determine which types of target (i.e.
AIS and Radar) will have an Interception zone:
• Radar targets — Enables and disables Predicted area of danger graphics for detected Radar
targets.
• AIS targets — Enables and disables Predicted area of danger graphics for AIS targets.
• Show for these targets — Determines when Predicted area of danger graphics are displayed.
Graphics can be displayed for:
– All targets — all targets onscreen.
– Targets crossing my course — only targets which are predicted to cross your vessel’s path
• Distance ahead — Changes the distance ahead of your vessel that the Interception line is drawn
(only available with Targets crossing my course selected). The distance can be set to a value
between 0.5 nm to 5.0 nm.
• Hide areas for static targets — Enables and disables graphics for Static targets, targets travelling
less than 2.0 kts will NOT have Predicted area of danger zones.
Collision scenarios
There are 3 potential scenarios the Predicted areas of danger feature can warn you about:
• Own vessel moving faster than target
• Target moving faster than own vessel
• Both targets moving at similar speed
Example scenario 1 — Own vessel moving faster than target vessel
Note: These scenarios are examples provided for guidance only.
In the example above the vessel’s COG will cross with the target’s COG within the Interception zone,
which could cause a collision. You should alter course and / or speed to avoid the potential collision.
Chart app
155