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19th July 2011 12:41 AM
john26 I tried the WindMeter iPhone app to make measurements but I quickly realized that measurements are far from the reality! I totally agree with Ken—experience teaches us how to read the water for wind speed, and it’s pretty easy if you only sail in a few locations.

When I’m on the beach and friends call to ask about the wind, I usually give them a beaufort estimation. That ends up being enough for them to decide if it’s worth the drive, or which sail to rig.


Just found an iPhone app called weendy that let me send a wind estimation out from the spot where I am sailing. That way everyone has the info, and I can finally rig my sail without all these phone calls: )
18th July 2011 11:56 PM
Farlo Hello Poster #29, again it depends on which F4 you are talking about. For sure I will be "nicely powered up in 6.6 - 7m" in steady 14-15 knots (I'm 67 Kg) but in 11-12 knots the 7.8 will not be too much. In "13-17 knots, with an average of 15 (F4) and gusts up to 25" I might be OK with 6m, but there is no single number like F4 to describe it.
18th July 2011 07:00 PM
BelSkorpio I agree,

it all depends on how you define F4.

I merely want to point out once more that wind estimations, purely based on the visual, can be really deceptive. Yesterday, we had unbelievable wind variations, because of SW wind combined with a lot of showers. When I arrived at my spot, my first impression was 6Bft. Yes, there were gusts up to 25 knots, deluding the water state with magical white caps. But these were merely gusts. 80% of the time or more, the average was only 15 knots, sometimes dropping to hardly 12 knots.
I've seen a lot of guys shlogging in the lulls with too small sails 5.xm2.
18th July 2011 10:25 AM
Unregistered Belskorpio,

Alternatively, you could simplify it into

Quote:
Originally Posted by BelSkorpio View Post
F3-4: 122/8.8 combo

F4: 122/7.8 or 101/7.8

F5: 101/6.7, a bit underpowered but always on the plane and going like crazy in the gusts
Please note that for the poll F4 was not included. F4 conditions are a bit tricky because this is the minimum condition for heavier windsurfers to get planing but for the lighter windsurfers, they will be very nicely powered up in 6.6 - 7m
18th July 2011 01:28 AM
BelSkorpio 10- 14 knots, with an average of 12 (F4) and gusts up to 17, and I'm probably on my 122/8.8 combo

13-15 knots, with an average of 14 (F4) and gusts up to 20 and I'm probably on my 122/7.8 or 101/7.8

13-17 knots, with an average of 15 (F4) and gusts up to 25 (which I had this morning) and I'm on my 101/6.7, a bit underpowered but always on the plane and going like crazy in the gusts
18th July 2011 12:56 AM
BelSkorpio Couldn't agree more.
F4 is a very difficult and vague range, in which I could use 3 different sail sizes.
18th July 2011 12:54 AM
Farlo Today was typical "F4" weather. Forecast was 12 knots in the morning and 15 in the afternoon. Indeed when I arrived the wind was still moderate so I rigged my Naish GP 7.8 on the Falcon 112 and here we go. At some point the wind started to increase and I thought: well it's F4 rignt? Let's give a bit more outhaul to the sail. And just when everything was perfectly balanced... my wishbone broke!! Floating back to the shore I noticed a few guys much heavier than me with sub seven sails (admittedly they were not planing all the time). Then I rigged my Sprint 6.6 on another boom, took the ST104 and guess what: it was perfect day. Still F4 but steady 15 knots, a completely different kit and much more fun
17th July 2011 06:48 PM
Sailboarder I agree with Farlo. F4 gives a general idea, but is not accurate enough for rigging.
17th July 2011 02:59 AM
Farlo One reason why I prefer knots to Beaufort scale is the broad range covered by F4. At 11 knots I might be hardly planning with 7.8 mē - my biggest sail - while in consistent 15 knots plus gusts I may be happy with 6 mē and a small board. It is not the case in F5 or F6 where a single sail/board combo is more likely to cover the whole range. Of course I will pick one size that suits the average wind of the day, but F4 means virtually nothing although it is the sweetspot of many sailors.
11th July 2011 12:19 AM
Ken I find it interesting that those that should know, frequently assume that mankind is not capable of changing/learning through immersion. We all can adapt very quickly if there is only one option.

In the US, especially Texas where the state and public school systems are confronted with a HUGE influx of non English speaking aliens. The schools almost all choose bi-lingual education (with poor results), rather than full immersion in English. You think educators would be smarter. Actually, the teachers are smarter, but it's the state and local governments that are not.

I still believe that it is politics that is driving this boat not results, same with the metric system.

I was out yesterday in Beaufort 3.5 with my formula board and 11.0 and hit a top speed of 23 knots.
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