34 
Designation 
Abbreviation 
Dependent on state 
variables 
Further input in 
formation 
Course made good at reference 
CMGo 
x’b 
/b 
Course made good at x 
CMGx 
x’b 
Yb 
Yb 
XSPoint 
Drift 
DRIFT 
Xw 
y’w 
X B 
/8 
Heading 
HDG 
Yb 
Position at reference 
LATo 
LONo 
xb 
Yb 
Position at (x,y)s 
LATxy 
LON„y 
xb 
Yb 
Yb 
XSAntenna 
ySAntenna 
Rate of turn 
ROT 
Y’b 
Speed over ground at reference 
SOGo 
Xs 
Y'b 
Speed over ground at x 
SOGx 
Xb 
Y’b 
Yb 
XSPoirt 
Speed over Ground Ahead 
SOGX 
Xb 
Y’b 
Yb 
Speed over ground across at ref 
erence 
SOGYo 
x’e 
/b 
Yb 
Speed over ground across at x 
SOGYx 
Xb 
/8 
Yb 
Y’b 
XSPoint 
Speed through water at reference 
STWo 
Xw 
y’w 
Speed through water at x 
STW, 
Xw 
y’w 
Yb 
XSPoint 
Speed through water Ahead 
STWX 
Xw 
y’w 
Yb 
Speed through water across at 
reference 
STWYo 
Xw 
y’w 
Yb 
Speed through water across at x 
STWYx 
Xw 
y’w 
Yb 
Y’b 
XSPoint 
Air temperature 
ATEMP 
temper 
Air pressure 
BAR 
P