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Navigation Sensors · 335
Sheet "Other"
To select between
Speed/Course, Position, Other
or Record sheets to be opened
either press button
or go by cursor above
Speed/Course, Position, Other
or Record text and press
SELECT
True wind:
In this field Wind (True or North) speed (Kt or m/s) and course are displayed. Note: true wind is wind relative to
own ship heading. For more information, see chapter "Wind sensor" on page 353.
Set and Drift:
If user selects Manual tick box, this enables user to set manually speed and course of drift. Note: You can select
manual drift only if there are no automatic sources of SOG and COG. (i.e. You neither have a dual axis log nor any
position receiver available.)
Angle = difference between heading and COG
Spd = speed component of the drift vector
Crs = 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).
HDG
spd
SOG
COG
a
n
g
l
e
crs
SPD: water speed
HDG: heading of ship
SOG: speed over ground
COG: course over ground
spd: speed of drift
crs: course of drift
angle: difference between HDG and COG
North
SPD