Turn (TRN)—
The difference and direction in degrees between the bearing to your
destination and your course over ground. The TRN value is used to indicate what
direction and how many degrees to turn to get back on course.
Universal Time Coordinated (UTC)—
The time of day at the prime meridian
(0º longitude) in Greenwich, England.
Universal Transverse Mercator- (UTM)—
A grid coordinate system that projects
global sections onto a flat surface to measure position in specific zones.
Velocity Made Good (VMG)
—The speed you are closing in on a destination along a
desired course.
80
SECTION
G
APPENDIX
Glossary
NORTH
ACTIVE FROM
WAYPOINT
NORTH
DTK
CROSSTRACK ERROR
XTK
BRG
COG
SPEED OVER GROUND
DISTANCE
ACTIVE TO
WAYPOINT
215225manb.qxd 4/27/00 9:22 AM Page 80