434 · Definition of Terms
Figure 1
FROM WP
TO WP
HDG=Heading
COG, SOG=
Course Over Ground
Speed Over Ground
Set and Drift
OFF TRACK
PLAN
=
Center line of
monitored route
ROUTE=
Calculated course
to minimize off track
Figure 1
Figure 2
forwarding
distance = f
Wheel Over Point
WOP
radius
next course
Approach
Point
end of turn
Waypoint
WP
WP approach
alarm time
Figure 2