What the Portagee is attempting to differentiate here is the difference between true wind direction and relative wind direction. (Neither of which has anything to do with apparent wind.) Without a compass interfaced, all readings for true wind (and relative wind) will be referenced to the angle off the bow, the relative angle or the relative wind direction. The vessel's heading must then be applied to the relative wind angle to derive true wind direction. To do so automatically you'd need some type of heading input such as a flux-gate compass or GPS.Jim,
the ST60 is NOT to be used to tell you where, as in which magnetic direction, the wind is coming from..it's used to tell you, in relatiion to your bow, where is the true/apparent wind and how strong they are...
It's a sail realted instrument, not a navigation instrument.
Which would be my purpose. My main reason for wanting to know true wind speed is to know if I'm getting the most I can out of her for given conditions. Sure, we can go back to Sailflow, after the fact, but, especially sailing on Lake St. Stupid, as we do, what the buoys report and what was reality are not necessarily the same thing. An exchange between xort and I a couple months back, where we'd both been near, but on opposite sides of the same buoy, at the same time, and experienced completely different wind conditions was a perfect example. Secondly: True wind bearing would be handy, during races, for determining favoured tack: No?It is nothing more than a sailing aid...
Not true, according to the link Brak provided: gadgetPool.de Forums-viewtopic-SeaTalk-NNMEA-Bridge : True Wind direction SOG/STW (from the thread you referenced earlier in this thread). That device optionally rewrites SOG sentences to STW sentences, fooling the ST60 wind instrument into thinking it's getting what it wants.Jim,
the bridge works only if you have the SOW available in a different format (NMEA for instance), translating into/from Seatalk.
If you're talking about removing the transducer for cleaning and putting it back in: Yes. Tho no procedure is going to completely eliminate some water getting in, the man who surveyed our boat said the mistake that most people make is trying to remove one and plug in the other all in one go. Instead, he said, remove one, quickly slap your hand over the hole, grab the other and quickly plug it in.BTW, as per Beneteau "give away" I have a ST speed/log too. But this is a real mess to plug the paddle. I don't consider myself skilled disabled, but I find it somehow difficult to plug it. Is there any tip or different procedure people use to cope with that ?
Not for some time now, There was an MBO, its a public UK company and its share price has tanked in the last year.Raymarine is a division of Raytheon. The latter is a big supplier of high-tech military hardware to the the U.S. military. Things that make you go