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Spotting Windshifts.

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iGRF View Drop Down
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    Posted: 03 Feb 15 at 9:34am
So, I don't need to know how, I'm OK with it, but I'd like to know how you tell others how to do it.

I was showing a new guy what they were on the water on sunday, pointing out how the wind fans out and that you can have two boats both on a lift sailing in opposite directions in some conditions when the wind is coming down from above more like we get in the cold Northerlies we had on sunday.

The conversation then got round to light conditions where they can be more devastating if you get them wrong and I pointed out you can't rely on the wind indicators and burgee things that are fitted to the actual boat, then I wondered how is it they actually teach you then.

We windsurfers obviously use our ears or feel the shifting pressure in the sail, that combined obviously with the changing angles of the fleet in their attitude to our position. After quite a long while I can kind of sense them a bit through my backside in a boat by not holding the tiller too tight, rocking the boat to leeward when hunting lifts and to weather when faced with a header but it's taken me these almost ten bloody years and it's still not totally reliable.

But the tricky thing is what I call false headers, which aren't headers, they can even be lifts which come about when the pressure of the true wind drops and the momentum continues so your wind indicator thingy points nose first and gives you the impression you're head to wind when you really aren't.

I've not seen all this described anywhere, it wasn't in Start to Win, so my question is what book is the best reference for all this, so I can recommend it. We have a few grown up late starters and it's going to take them ages to come from trailing round at the back of the fleet unless they get some help understanding wind shift tactics, which is the best book and or how were you taught?

Edited by iGRF - 03 Feb 15 at 9:40am
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Post Options Post Options   Quote turnturtle Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 15 at 9:39am
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Post Options Post Options   Quote iGRF Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 15 at 9:41am
Thanks TT, is it any good have you read it?
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Post Options Post Options   Quote turnturtle Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 15 at 9:47am
I've not read it, but I would be very surprised if it's not an exceptional bit of material, well written and edited.

Those Fernhurst books have had a recent major reboot, and the guy behind it is a very, very competent sailor and very well respected.  
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Post Options Post Options   Quote iGRF Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 15 at 9:56am
I wrote something for Fernhurst books once, eons ago, Tim somebody, maybe even Fernhurst, was that his name? Damned if I can remember, I note they have a tactics book as well, not brilliant, all Timmy Tacker, Harriet Header & Sally Shifter patronising drivel but it's got the basics. I shall point him there...

I bet there's no mention of the nitty gritty of it all though knowing which ones to go with and which to ignore..

Edited by iGRF - 03 Feb 15 at 9:58am
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Post Options Post Options   Quote turnturtle Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 15 at 9:59am
Tim Davison - really nice guy, sails a Solo at Draycote along with the other gentleman who is taking Fernhurst forward.  

Both really great guys- and know their onions.
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Post Options Post Options   Quote iGRF Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 15 at 10:05am
Tim Davidson that's probably the guy, it was 35 years ago now, can't remember exactly what it was, might have been a translation I did from Yank to English.

They were doing dinghy stuff back then so they must be like me, forgotten more than most folk know these days..
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Post Options Post Options   Quote ds2 Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 15 at 11:42am
Tim's a great guy and wonderful company. He was third in British Moths nationals last year, still competitive over all wind conditions and hikes like a demon.
He only got beaten by Toby Cooper(a class legend) and Robbie Claridge who's over fifty years younger than him.
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Post Options Post Options   Quote fab100 Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 15 at 11:43am
I refer to it as Velocity Sheer - covered on page 99 of Club Sailor along with other weird wind effects like downdrafts and updrafts. Downdrafts also here

10 ways to spot a wind shift - p54

Tim Davison is a lovely chap - had some good times at Laser Masters events
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Post Options Post Options   Quote iGRF Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 15 at 12:31pm
Originally posted by fab100

I refer to it as Velocity Sheer - covered on page 99 of Club Sailor along with other weird wind effects like downdrafts and updrafts. Downdrafts also here
10 ways to spot a wind shift - p54
Tim Davison is a lovely chap - had some good times at Laser Masters events


Thanks for that - perfect, just what he needs, I'd quite forgotten your book is that bit in it?

Velocity Sheer? Yep that's a good complicated way of describing it like a true dinghy sailor..

By the time I was explaining why their silly wind direction pointy things were wrong, there were two of them and I could see they didn't get it even when I did all the hand gestures, I shall now tell them it's velocity sheer and it's in your book. I should read what you wrote first I guess just to check you get it as well..
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