Sailing

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.

Settings

• 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.