Garmin Start Guidance, a sail racing winner?
While I haven't done much racing, I do know that the prestart maneuvering can be quite challenging if not downright scary. It's hard enough to time a sailboat to be at the right place at the right moment going maximum speed in the right direction, but you must also avoid collisions with the competition trying to make the same perfect moves. Some sailors are shy about racing because the starts can be nerve wracking, and one nice aspect of the Garmin Start Guidance software coming out in 2015 is the fact that it's simply software built into a regular multifunction display. Now that I've seen more about how it works, I'll bet that many experienced racers will also want this edge...
I saw a brief demo of Start Guidance when Garmin introduced a slew of 2015 products in Lauderdale, and I've been bugging them for more detail since. Last week they gave me access to an in-house video along with permission to publish screenshots of it. So what you're seeing here is not necessarily the finished software -- for instance, Start Guidance will probably get its own icon instead of the Chart icon used above -- but what follows certainly looks like a good start :-).
Incidentally, Garmin already offers sailors the Wind Gauge and Race Timer seen in the Start/Gauge combo screen at top, as well as layline and wind rose chart overlays, and I understand that Start Guidance is a combined effort of Garmin and Nexus Marine engineering.
Start Guidance is just a blank screen until you specify the ends of the start line, but that seems fairly easy. You can enter their Lat/Long coordinates if the race committee has divulged them, or you can ping the marks by sailing your bow as close as possible to them (first having entered the distance from there to the MFD's GPS, internal or otherwise). During this time before the race you'd also determine your best speed and angle to windward (layline) in the prevailing conditions and enter those into Start Guidance if they've changed from the previous race.
Once the ends of the start line are established, the line itself will pop up on even a chart window. But the really useful info is the visualized timing and vector math that will go live in Start Guidance.
First there are the dotted lines showing where you might want to be at a user-set target time before the actual start, depending on which tack you plan to start on. This is what an experienced racer already visualizes mentally, though potentially more accurate. Note how the line furthest from the start automatically indicates the favored tack. So in this particular case -- 22 seconds before the 1 minute gun -- the demo racer seems to be jockeying for the most desirable favored pin position. There's apt to be a lot of traffic in this area, so having the timing presented so graphically may allow the helmsman, navigator, and/or tactician -- who all may be one person -- to focus their attention on other important matters.
Once the 1 minute gun fires, the dotted lines vanish and the focus moves to the start line itself. Actually, Start Guidance will show you "Time to Burn" whenever you're headed toward the line, but here's when it gets critical. The demo racer needs to make up 5 seconds -- as shown by both the white heading line and minus burn number -- but seems in good shape otherwise.
Indeed, it seems that heading up a bit got the virtual racer a sweet 2 seconds to burn with 36 seconds to go. Of course, all this graphic goodness is dependent on good GPS, wind and speed sensors, as well as accurate line-end measurements and speed/angle performance estimates, not to mention successful collision avoidance. But that's all possible, and maybe the Garmin MFDs that support Start Guidance could even declare, "Well done!" if you cross the line with the 1 second perfection seen below.
I believe that Start Guidance will be included in all the new Garmin GPSMap 74xx/76xx series and will also come to 8xxx and maybe 74x MFDs as a software update. The B&G H5000 that Kees covets can already include a similar (though less graphic) start line screen, which I saw working well on the water, but maybe Start Guidance will encourage B&G, Raymarine and others to develop similar software for their MFDs. I'm not suggesting that a little software can duplicate the very sophisticated features of a high-end racing system like the H5000, but isn't it great that the feature seen here seems doable on most any modern display?
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Terrific! Every sailing feature added to an MFD is a big plus, and maybe this would help get more sailors to come racing.
Very Very Cool!
Some questions for Garmin if they are watching this thread ...
I bet an ultrasonic wind instrument would be real useful for a feature like this, absent that, is there some attempt to smartly (e.g. more sophisticated than damping) smooth out the apparent wind measurement? Can it be adjusted or turned off for people who have great wind instruments like the Airmar's that provide a steady reading even in lumpy seas, and would suffer from additional damping?
How does this feature know the most favored tack? Do I enter the location of the upwind mark in addition to the starting line marks?
I sail in long island sound, where set & drift are a big factor in reaching the starting line at the right place and time. Is correct results contingent on there being zero set & drift, or does the Garmin take set/drift into consideration in it's calculations and graphics of the start area? Can I provide set & drift to the Garmin manually or does it use the set/drift the MFD calculates from instruments?
Is the best angle to the start line (provided before each race) the overall for the boat in the current wind speed or measured pre-start. Is this a way of incorporating current at the start line if current isn't supported outright? Does the user enter the best angle once, or once each for port and starboard approach? Is it automatically adjusted if the wind direction changes?