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11.8 Target Alarm
The target alarm serves to alert the navigator to targets (ships, landmasses, etc.) entering (or
exiting) a certain area, with audio and visual alarms. The outer and inner boundaries can be set
at any distance. The sector of the zone can be set anywhere between 0 and 360 degrees in any
direction. Two alarms may be set.
CAUTION
•
The alarm should not be relied upon as
the sole means for detecting possible
collision situations.
•
A/C SEA, A/C RAIN and GAIN controls
should be properly adjusted to be sure
the alarm system does not overlook
target echoes.
11.8.1 Target alarm type
Two alarm types are available: inward and outward. The inward target alarm generates audio
and visual warnings when a target enters the guard zone from any direction. The outward target
alarm is produced when a target leaves the target alarm zone. The type of alarm active is shown
at the bottom right corner on the screen as TA1(2) IN or TA1(2) OUT.
(a) Inward target alarm
(b) Outward target alarm
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