Furuno CI-68 Operator's Manual page 22

2. INTERPRETING THE DISPLAYS
Item
Heading
Mode
Mode marker
Speed/course
2-2
Description of indications on tide vector display
Ship's heading fed from a heading sensor.
Shows current tracking mode, as selected with the [TRACK MODE] key.
Shows tracking mode and echo availability for last three minutes, scrolling
from right to left. The color represents tracking mode as shown below.
Speed made good and true course are shown. The displayable range is 0.0
to 40.0 kts for speed and 0° to 359° for course.
Description