Magellan GPS PROMARK X, User Manual

Page: 83 / 188

Waypoints, Routes & Navigation ProMARK X
5-13
Speed of advance (SOA), on the third line, is the vector component of the
ground speed in the direction of the destination waypoint. It is calculated
using speed and ground course. When XTE = 0, SOA = VMG.
SOG
Start
Destination
SOA
Speed of Advance (SOA)
Information about your rate and
direction of travel is viewed by press-
ing the
RIGHT ARROW at any
time. This information is available
only when your speed exceeds 0.3
km/hr. (Speeds greater than 951
mph/826.40 knots/1530.5 km/hr
cannot be measured.) If you are on
a route you will also see bearing
and distance to destination, as well
as the current route and leg.
Speed over ground (SOG), on the first line of the above screen, is actual
groundspeed measured as instantaneous groundspeed and direction.
Course over ground (COG), on the second line, is the true direction of travel
achieved. It is sometimes referred to as ground course.
Press the DOWN ARROW to return to the first NAV display.
If no routes are active and the NAV
key is pressed the adjacent screen
will appear.
SOG 1.06 Km/HR
COG 123 M
1.04Km 102`M
R 1 LEG 10 ~
NO ROUTES ARE
SET
!