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Default SeaClear CPA/TCPA Sound Alarm

Hi Pascal

The anti collission feature in Seaclear is very clever, since it only
alerts if there is an actual collission danger.
To simulate situations you should use the D.R. ( dead reckoning )
feature and place your boat near the AIS target and then experiment
with speed and heading manually. When the red circle and the AIS target
name shows and you dont hear the sound alert you should enter
TOOLS/PROPERTIESOTHER and check the sound on box.
Hope this is helpful

Regards Michael