Raymarine RL70C, Owner'S Handbook Manual

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74 HSB Series LCD Display
Note: Until you are familiar with interpreting the radar display, you
should take every opportunity to compare the radar’s display patterns
with visual targets, such as other vessels, buoys and coastal structures. You
should practice harbour and coastal navigation during daylight and in
clear weather conditions.
4.2 Changing the Heading Mode
The radar picture is normally shown with your vessel’s dead ahead bearing
straight up, as indicated by the Ship’s Heading Marker at 0° relative bearing.
This is the Head Up orientation.
If heading information is available via a SeaTalk or NMEA connection, you can
choose a different heading mode.
Press the
HDG MODE
default soft key to obtain the following display, when
heading information is available:
HDG MODE
COURSE UP NORTH UP
D3641-2
HEAD UP
The currently selected mode is shown highlighted, and is also indicated in the
status bar at the top of the screen.
Heading Modes
The heading modes are as follows:
D3988-1
Head Up
North Up Course Up
• Head Up: The radar picture is displayed with the vessel’s current heading
upwards. As the heading changes the picture will rotate.
• North Up: The radar picture is stabilised and displayed with north upwards.
As you change heading, the ship’s heading marker moves.
• Course Up: The radar picture is stabilised and displayed with the currently
selected course upwards. As you change heading, the ship’s heading marker
moves. If you select a new course, the picture resets to display the new course
upwards.
Changing the
Heading Mode