3. CUSTOM SCREEN
3-4
Wind Wind Speed Apparent Wind Speed (AWS): Wind
speed measured by wind transduc-
er.
True Wind Speed (TWS): Wind
speed calculated as if the ship is sta-
tionary.
AWS,
APP Wind SPD,
TWS,
True Wind SPD
MAX TWS Maximum True Wind Speed MAX TWS
Wind Angle Apparent Wind Angle (AWA): Wind
angle measured by wind transducer.
True Wind Angle (TWA): Wind angle
calculated as if the ship is stationary.
Both AWA and TWA are with the
ship’s bow as the reference direc-
tion.
AWA,
APP Wind Angle,
TWA,
True Wind Angle
Low AWA Low Apparent Wind Angle: Maxi-
mum angle of apparent wind at port
side
Low AWA
High AWA High Apparent Wind Angle: Maxi-
mum angle of apparent wind at star-
board side
High AWA
Beaufort
Wind
Beaufort wind speed: Wind speed
according to wind force level
BFT,
Beaufort Wind
Ground
Wind
Ground wind direction: Wind direc-
tion measured with true north as the
reference direction. True wind sub-
tracted ship’s movement from appar-
ent wind.
GW DIR,
Ground Wind
Heading Heading Compass direction HDG, Heading
Heading
AVG
Average heading HDG AVG,
Heading AVG
Locked HDG
(See section
3.6.)
Use for navigating with heading
locked.
Analog screen: The pointer indicates
variation from the locked heading.
The digital shows the locked heading
or current heading.
Digital screen: Display the locked
heading.
Locked HDG
Next Tack Heading on next tack: Heading
against TWA (True Wind Angle)
TACK,
Next Tack
COG Course Over the Ground COG
CMG Course Made Good: Direction from
the starting point to the current point
CMG
DMG Distance Made Good: Distance from
the starting point to the current point
DMG
ROT Rate Of Turn: Head angle change
during one minute
ROT
Category Option Description Indication