Settings / Sailing (All but SEAiq Pilot)
This panel is used to control settings primarily related to sailing.
Currently, only one setting is supported, which enables display of
status information that can be helpful when sailing to wind.
We hope you find this feature helpful. Please keep in mind that
this support in SEAiq is fairly simplistic and is targeted more at
simple needs of cruisers than for racing, etc.
Sailing to Wind
: For use when tacking up-wind.
Sailing to Wind
This is used to display extra status information that can be helpful
when tacking into the wind. It processes various sensor data and
presents it to help understand whether you are on the best tack and
when to change tacks.
This setting requires NMEA data about the Apparent Wind Angle (AWA)
to your vessel. If True Wind Angle is available, it will be used,
otherwise it will be derived. It also assumes you have a waypoint
you are currently set to follow.
When enabled an extra panel is displayed in the vertical status bar,
labeled Sail to Wind. It includes 4 data points:
BTW: Bearing to Waypoint. This gives the bearing to the waypoint
your are currently navigating toward.
WIND: Wind Direction (Fixed, not Relative). This is the compass
direction that wind is coming from. Note that AWA and TWA are
normally give relative to the current heading of the vessel.
Giving a compass direction rather than fixed direction, allows the
direction to be compared to BTW. Typically, you will want to be on
a tack that matches the relative directions: on a port tack if wind
is to port of your waypoint, and vice-versa.
TACK0: Current angle to waypoint. This is the relative angle of
your vessel's course to your waypoint. This shows how far downwind
your course is from your waypoint. Note that this value
corresponds to your course (COG) not heading (HDG).
TACK1: Estimated angle to waypoint for alternate tack. This is an
estimate of what angle you may have if you tack. When TACK1 is
significantly smaller in magnitude than TACK0, that can indicate
tacking will put your vessel on a more direct course to the next
waypoint. Note that this estimate assumes your vessel can head
into the wind similarly on either tack. It also does not account
for how current will affect your vessel differently on each tack.