Section 17 Setting up Alerts 17-4
17.2 Collision Avoidance Alert Generation
Conditions
When you select [Collision Avoidance] in the classification pane, the [Collision Avoidance] dialog is
displayed in the edit pane.
In this dialog, the collision detection condition (CPA/TCPA limit) and the AIS target status, which is the
target of alert detection, can be set.
For the details of CPA/TCPA, refer to "6.2 Collision Avoidance (Explanation)".
As for the values of collision detection conditions, please specify the optimal values according to
the ship type, sea area, weather and marine conditions. (For the condition and type of each alert,
refer to "6.7 Alert Display".)
17.2.1 Setting the CPA/TCPA limit values
1 Enter the value of [CPA Limit] in a range from 0.1 NM to 9.9 NM.
2 Enter the value of [TCPA Limit] in a range from 1 min to 99 min.
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