CAUTIONS
In order esa to work properly and to let work it at the maximum potential is important to have onboard
instrumentation calibrated.
For its own calculation esa imports from onboard instrumentation a series of essentials data that elaborates on its
own: Boat Speed (BS), Magnetic Heading (HDG), Apparent Wind Angle (AWA) and True Wind Angle (TWA).
We recommend to carefully read the instruction of yours navigation system and to perform the data calibration of those mentioned above
as written in their manual. Calibration values could change through time, is better to check them periodically to be ensured the onboard
instrumentation and consequently esa work properly.
It is better to learn the meaning of the abbreviations comparing in esa displays.
Initial
Denomination
Meaning
pag. 4
BS
Boat speed
Boat speed on water (knots)
Pol
Boat speed polar
Boat speed as polar (knots)
AWA
Apparent Wind Angle
Apparent wind angle(°) respect to the bow (+ from right; - from left)
AWS
Apparent Wind Speed
Apparent Wind Speed (Knots)
TWA
True Wind Angle
True Wind Angle (°) respect to the bow (+ from right; - from left)
TWS
True Wind Speed
True Wind Speed (Knots)
TWD
True Wind Direction
True Wind Direction respect to the magnetic North
%
Boat Speed Perc.
Boat Speed Percentage respect to the polar (target data)
HDG
Heading
Bow magnetic heading (°)
SOG
Speed Over Ground
Boat Speed over Ground (from GPS) (Knots)
COG
Course Over Ground
Boat course over ground (from GPS) (Knots)
OPP TACK
Opposite Tack
New bow Heading (HDG°) after a veer or shoot down, on TWA tgt course
BS tg
Boat Speed Target
Boat Speed Target for Bowline/Stern (Knots)
TWA tg
True Wind Angle Target
True Wind Angle Target for Bowline/Stern (°) (+ from right; - from left)
