The WGPSSRC rules have been updated, in 2016, with the addition of the newer (GW52) device and data retreival procedures for them. There is currently a problem with getting the updated rules onto the GPS-SS website.
The GW60 has not been officially added yet as we needed to evaluate it further. It will probably be added soon.
Top secret record rules - cool
. I checked the rules on the GPS3 site after reading Dennis' post, but it did not occur to me that posting updated rules might take more than a year.
The GT-31 is still perfectly adequate for a 24 hr record at the very least, and 10 second and other records as well, as long as one accepts that they will incur a higher penalty for error deduction.
I imagine Dennis and Kato duking it out on Lake George next year, and one of them winning by a few km because he used a few GW-52s, the other GT-31s. But then, I've been told my sense if humor is a bit unusual
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A bit more seriously - how to treat errors in 24 h attempts may deserve some discussion. With 5Hz and higher data rates, the calculated error pretty much disappears, which may be too optimistic (especially with GW-60s worn on the wrist). With > 400,000 data points at 5 Hz, the calculated error will be around or below 0.001 knots, which may be too optimistic. I have seen some device comparisons where the error estimates were too optimistic even for a nautical mile or 1 hour.
A simpler and more robust way would be to treat the results from the two devices (or sets of devices for GW-52 etc.) as the variables, and to calculate the standard deviation from these numbers. For Kato's tracks, that gives 0.002 knots (or 0.014%), the same number that GPSResults gives for "gaussian" error propagation. However, GPSResults reports a two standard deviations, IIRC. But even if you'd take three sigma to get 99.8% confidence, Kato's numbers would be darn close to 660 km.
Top secret rules? No, as I explained, that is not the case, and that is a very harsh characterisation.
The latest rules are available for any potential record candidates from me. But the most important thing is for potential candidates to contact myself or other committee members and discuss their plans.
I agree with you that a review of the error calculation rules for other than 10 second records is due. We had already begun that discussion before I received your recent email. We have provision in the rules to adjust the calculation method if we agree there is a better way, and then adjust previous records accordingly.
I agree that the method we use for 5Hz and higher Hz devices appears to be possibly optimistic for longer time periods, and we welcome your considered suggestion for consideration.
I would be pleased to hear more from you or other interested people via email. These forums are not the place for that discussion.
I agree Daffy, argue the merits amongst the committee and interested parties, come to a conclusion and let everyone who's interested know the outcome. I'm not fussed either way as the reductions balance out.
Time to get back to doing crazy stuff....... who wants to come for a sail ![]()
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you crazy? it's dark outside.
Oh wait, that doesn't bother you does it.
Brawn is always better Matt ![]()
Wind is coming
oh...? better get rid of the group of society that invented GPS's. And cars. And phones. And electricity. And clean water. They are just holding everyone back.
Goes back a lot further that Matt, ever tried napping a stone to make a tool, takes a lot of skill.
but I guess learning that, was more trial and error.
But you can still hear the guys around, saying, " stop messing with those silly old rocks, you rock nerd".
Goes back a lot further that Matt, ever tried napping a stone to make a tool, takes a lot of skill.
but I guess learning that, was more trial and error.
But you can still hear the guys around, saying, " stop messing with those silly old rocks, you rock nerd".
*grunt* *grunt* *nerdgrunt* ... *heygrunt* *letsgrunt* *inventgrunt* *languagegrunt* ![]()
Too much tech/nerd talk
, back to the focus - Well done Kato!!!! ![]()
This is the "GPS" sub-forum... maybe it is just too many simple-minded people that think brawn is better than brains? ![]()
Its ok Matt we accept you for who you are.
You're always welcome to sail at Caloundra again!
Watch out for the simple minded folk!
Too much tech/nerd talk
, back to the focus - Well done Kato!!!! ![]()
This is the "GPS" sub-forum... maybe it is just too many simple-minded people that think brawn is better than brains? ![]()
Its ok Matt we accept you for who you are.
You're always welcome to sail at Caloundra again!
Watch out for the simple minded folk!
I'm going to rant here because I think it has value .... yes I am now being silly ... I can see it was and still is just a joke... and as an Aussie, I can appreciate the humour - I regularly do the same. And as a result of this post, I am likely to destroy any possibility of a future friendship.
... apparently you dont, because you criticise intellectual conversation. This is just an ...ism of another form [ ie: anti-intellectualism ], where the bullies picked on the groups they could control.
Kato being interviewed by Win TV

Did he suit up for the interview or was he about to go out.
No
, I did go for a sail......for the cameras![]()
There is a debate happening down here that Kato has taken over the mantle of Holywood from a well known Geelong windsurfer.
Kato was seen doing his hair and make up before the TV interview
That night at the pub he was immaculately dressed in black with matching sunglasses, would only enter the room when a standing ovation was cued and his media team Drift Media(pushy bloke) would only allow signings, interviews and photos if a substantial fee was paid![]()
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Pushy ! ahahhahah excellent !!!!! Drift ! the man !
No
, I did go for a sail......for the cameras![]()
There is a debate happening down here that Kato has taken over the mantle of Holywood from a well known Geelong windsurfer.
Kato was seen doing his hair and make up before the TV interview
That night at the pub he was immaculately dressed in black with matching sunglasses, would only enter the room when a standing ovation was cued and his media team Drift Media(pushy bloke) would only allow signings, interviews and photos if a substantial fee was paid![]()
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THATS IT !!!! Ya made my naughty list !!!! ??
When is the next attempt?
Get more support on the water throughout the whole attempt.
Night sailing sounds out there. I mtb at night with huge candle power and its great tho see tracks in a new light.
On the water with a handful of sailors ripping it up in the dark would be very unique.
A whole new discipline.
When is the next attempt?
Get more support on the water throughout the whole attempt.
Night sailing sounds out there. I mtb at night with huge candle power and its great tho see tracks in a new light.
On the water with a handful of sailors ripping it up in the dark would be very unique.
A whole new discipline.
It will be awhile, I'm now nursing 4 broken ribs and a bruised lung after a SUPsurf session went a bit wrong. A great surf too, except the end.
2 surfers carried my board back and drove me home, I hadn't met them before.A big thanks for the rescue.
At LG I sail with just a light on top of the mast , which casts a faint glow over the gear without wrecking the night vision. Two other lights mark the shore.
Sounds nasty Craig, No laughing, coughing or sneezing for a month or so - I hate broken ribs
Get well soon mate.
What a bummer Craig. I wish you well on you recuperation. Broken ribbs are very painful and take time to heal properly
I have just seen this post.
I send a huge congrats to Craig for an amazing distance. Anyone who has tried to get over 100ks knows it can be taxing on the body. Those trying to get over 200ks knows that it is a challenge getting your body and the wind/water conditions right at the same time. Then there is the issue of should I stop and change kit to suit the conditions as they are now and lose some distance? Or should I press on because the conditions will change again. Cramp, blisters and abrasion are all part of the experience.
600kms + in a near 24 hour period is a remarkable feat. I am in awe of anyone who puts in place the plans for this let alone achieves it. And then to think about bettering it. Great effort Craig.
And Dennis it is great that you do not seem bitter about your result but are instead planning to go further.
I look forward to seeing how you both go in future and who else is committed enough to join the duel!
Your my hero kato , I'm stuffed after three hours perfect weather and stuffed after 30 mins overpowered. Never tried sailing in the dark because I'm in bed at 9:00
sorry to hear of your injuries, Kato. I hope they recover quickly and perfectly so you will be able to do big distance again without further hindrance.
You are a star!