Safety In Track Mode - Raymarine ST4000+ Owner's Handbook Manual

81131_7.book Page 21 Wednesday, March 17, 2004 3:59 PM
Chapter 3: Advanced Operation

Safety in Track mode

Initiating a dodge maneuver
In Track mode, you can make a dodge maneuver by using the course
change keys (-1, +1, -10 or +10) to select the desired course change.
Cancelling a dodge maneuver
After you have avoided the hazard, you can cancel the dodge course
change by making an equal course change in the opposite direction.
Note: Provided the boat remains within 0.1 nm of track, you do not
need to steer back towards the track.
WARNING:
Track mode provides accurate track keeping even in complex
navigational situations. However, it is still the skipper's
responsibility to ensure the safety of their boat at all times
through careful navigation and frequent position checks.
Sailing in Track mode assists precise navigation and removes the
tasks of compensating for wind and tidal drift. However, you MUST
still maintain an accurate log with regular plots.
Confirming position at the start of a journey
At the start of a journey you must always use an easily identifiable
fixed object to confirm the fix given by the navigation system. Check
for fixed positional errors and compensate for them.
Verifying computed positions
Always verify the computed position with a dead reckoned position,
calculated from the average course steered and the distance logged.
Plot frequency
• In open water, you should make plots at least every hour.
• In confined waters or when near to potential hazards, you should
make plots more frequently.
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