Furuno FMD-3200 Operator's Manual page 279

Reference SPD: If checked, radar is used as the source for speed and course. Check-
mark is valid when the speed measurement method is "ground". Not available with
system sensor.
Set and drift: Check the [Set Drift] checkbox to manually set speed and course of drift.
Note that you can select manual drift only if you deactivate the AIS function. Check-
mark is valid when the speed measurement method is "water". Not available with sys-
tem sensor.
Angle = Difference between heading and COG
Spd = Speed component of the drift vector
Cse = Course component of the drift vector
Vector defined by (SOG and COG) is equal to vector sum of vectors defined by (SPD
and HDG) and (set and drift).
SOG
COG
COG/SOG page
Select the source (GPS receiver) for speed over the ground and course over the
ground.
North
cse
HDG
spd
SPD
SPD: water speed
HDG heading of ship
SOG: speed over ground
COG: course over ground
spd: speed of drift
cse: course of drift
angle: difference between HDG and COG
PRIM: FILT
18. NAVIGATION SENSORS
FILT
Not Available
18-3