Hardware
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F180R MOTION Sensor User and Reference Guide
Latitude direction
N = North
S = South
Longitude direction
W = West
E = East
Speed Over Ground (SOG) in knots
Course Over Ground in degree
Magnetic Variation in degrees
Direction of magnetic variation
E = Easterly variation from True course (subtracts from True course)
W = Westerly variation from True course (adds to True course)
Mode indicator
A = Autonomous
D = Differential
N - Data not valid
3.5.2.2.12 ROT
The ROT sentence contains Rate of Turn data.
Figure 40: ROT String