Raymarine UU074 Manual Del Usuario página 9

Course
Used in similar circumstances to the Turn page, the Course page shows
the course to steer to track directly to the waypoint.
Drift and Set
Because the boat is not always moving directly in the direction of its
compass heading you need to know the direction (SET) and the speed
(DRIFT) by which the boat is being pushed off course. Tactically this is
important when assessing when to tack or gybe to round a mark or
clear an obstruction or headland.
Your Maxi Display automatically calculates this information using
information from your GPS, boat speed and compass. The calculated
set angle is rounded to the nearest ten degrees.
Set and Drift as calculated includes the effect of both tide and leeway.
Therefore the value will be different on opposite tacks, depending on whether
the boat is sailing into or against the tide. This will be especially noticeable
when the tidal effect is small.
In conditions of little tide, this calculation is very sensitive to inaccuracies in the
calibration of your speed and compass transducers. It is not recommended that
you rely on the accuracy of this calculation in situations where the tide speed is
less than one Knot (a flashing indicator will alert you if the calculated values are
uncertain). See the full user guide for information on how to maximise the
accuracy of the calibration of your speed and heading transducers.
Performance Chapter
If you have an on-board computer connected to your Raymarine Wireless (NMEA)
interface, you can display data from the computer on your Maxi Displays using
Raymarine proprietary NMEA messages (PTAK). For example, you could calculate
and display "Distance to Layline", "Target Speed", "Corrected True Wind", etc.
When such messages are detected on the network, The Performance Chapter, of six
free format screens, is automatically added to the chapter rollover.
Many PC navigation packages support Raymarine proprietary (PTAK) sentences, and
details of how to use the PTAK interface are available from the Raymarine web site.
Custom data pages are not available on the Dual Maxi Display.
www.raymarine.com
Quick Start guide for the Maxi And Dual Maxi Display
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