how well does your yacht sail?

PaulR

PaulR

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whilst boat tests can be interesting reading they give no indication of relative performance of differing designs - just been looking at web site below which lets you look at the results by boat type - very interesting to see how different designs compared - ok so the way they are sailed makes a big difference but nevertheless still an interesting indication of relative performance


http://www.roundtheisland.org.uk/web/code/php/main.php?section=home
 
Sails reasonably well

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Re: Sails reasonably well

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on it's ear then ....

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Typical of IOR Rule design. Pulls lots of quarter wave......... and doesn't like being on its ear!
 
Re: Sails reasonably well

I think I would discount this years RTI in favour of a year when it was a good sail all the way around. Any suggestions for the best year?
 
Re: Sails reasonably well

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Any suggestions for the best year?

[/ QUOTE ]Pick the weather to suit the boat you favour. That's what handicap racing is all about.
 
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whilst boat tests can be interesting reading they give no indication of relative performance of differing designs - just been looking at web site below which lets you look at the results by boat type - very interesting to see how different designs compared - ok so the way they are sailed makes a big difference but nevertheless still an interesting indication of relative performance


http://www.roundtheisland.org.uk/web/code/php/main.php?section=home

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Be really careful in using race results to draw any conclusions about differing boats unless you know the conditions of the race. For example, this year's race was heavily influenced by a no wind zone at Bembridge.
And last year's race favoured boats that could get up and surf downwind in strong dconditions.
 
That spreadsheet is also the best way to get a farily comprehensive list of IRC ratings for each boat type.

I was happy as my old boat Puma, a Malbec 24, came in 31st I think overall.
 
I had a looksee at those results and took the "benchmark" yacht the CO32 then looked at other times

A Contessa 32 did it in 10:16 elapsed
A Cork 1720 did it just 8 mins less
A Dufour 34 did it 2 mins longer
A Wauquiez Centurion 40s took 20 mins longer
An X34 did it in 17 mins longer

Which doesn't seem a fair reflection on some of the other boats. Interesting reading though /forums/images/graemlins/smile.gif
 
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I had a looksee at those results and took the "benchmark" yacht the CO32 then looked at other times

A Contessa 32 did it in 10:16 elapsed
A Cork 1720 did it just 8 mins less
A Dufour 34 did it 2 mins longer
A Wauquiez Centurion 40s took 20 mins longer
An X34 did it in 17 mins longer

Which doesn't seem a fair reflection on some of the other boats. Interesting reading though /forums/images/graemlins/smile.gif

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I think it may be best to either pick a year when the wind was reasonable or only compare yachts that started at the same time.
Or You could consider course records for each design.
I'm sure with a little effort anyone should be able to get the information to fit what they want to hear.
 
yes, chuffed though we were with our time and o/a position, starting late - having a bit more breeze and tide in the West Solent than earlier starters- brings a little bit of farce into comparison of boats.
However, some in the last division with us did go faster and some did go slower.
I suggest a look at individual divisions would help in the comparison of boats, but there again how well were they sailed,(were they like sheep all following one another into the 'Ryde'doldrums' or get the wrong side of the ODM and have to sail back for 40mins?) how were they rigged, did they have a clean bottom? etc..
You would then perhaps look at individual divisions over several years to get a bit of a comparison and also look at the handicaps as some 'like' boats had dissimilar handicaps. Do you wish to find the fastest boat for its length, its class, its handicap?
I reckon you would have to get a good few years of results and info', to get even close at comparing some boats.

If it's handicap you'r interested in and your desperate to buy a good reliable 'go most anywhere, do anything little boat' then consider a Twister.

T66 Betty Dee ... for sale, £60K cash
She beat a lot of Contessa 32's whichever way you look at it! /forums/images/graemlins/grin.gif
http://www.roundtheisland.org.uk/web/cod...2&submit=Go
 
we were at least 200 places lower than i would have expected 322 overall) to be, had new crew for the race (father and father in law) who had no idea how to sail the boat. I went for a cruising chute instead of a spinnaker as i though it would be easier for them and we still ended up with a mighty tangle and did nearly all of the south of the island with white sails only. So our result is probably not a fair reflection of the boat but is of the crew on the day
 
Like a witch downwind
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and great up wind

http://www.youtube.com/watch?v=geQLUGY6d1M

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and very nicely elsewhere

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yes! I lurve my boat /forums/images/graemlins/smile.gif and at over 16500lbs she rides steady and fast in the rough stuff /forums/images/graemlins/cool.gif
YAY!!! Go C38's GO!!!!!! /forums/images/graemlins/smirk.gif /forums/images/graemlins/smirk.gif /forums/images/graemlins/smirk.gif
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Sorry /forums/images/graemlins/ooo.gif I get carried away by my Good Ole Boat /forums/images/graemlins/ooo.gif
 
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I had a looksee at those results and took the "benchmark" yacht the CO32 then looked at other times

A Contessa 32 did it in 10:16 elapsed
A Cork 1720 did it just 8 mins less
A Dufour 34 did it 2 mins longer
A Wauquiez Centurion 40s took 20 mins longer
An X34 did it in 17 mins longer

Which doesn't seem a fair reflection on some of the other boats. Interesting reading though /forums/images/graemlins/smile.gif

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Snooks

You are right. It isn't a fair reflection. You have taken the fastest Contessa 32 out of a sample size of 27 and compared it with the fastest Dufour 34 out of a sample size of ... 3.

Two things a statistician will tell you when trying to make comparisons that are "statistically significant":

There will always be outliers, so never take the best or worst - use the mean/median or mode.

A small sample is of no use when trying to prove a point. A sample of 27 Contessa 32s is a good sample size. Three Dufour 34s is not (altough note how close the 3 Dufour 34s were - slowest was just 18 minutes behind the first).

I could use the same set of data and conclude that the average (mean) time for a Contessa 32 of 11:32 is over an hour slower than the average (mean) of the Dufour 34s of 10:25. /forums/images/graemlins/tongue.gif

Lies, damn lies and statistics !!
 
My post was an example that the results don't tell you "how your yacht sails" and even with a large fleet size, it's still no cast iron evidence of a yachts performance. For some reason I'm thinking about a certain large charter fleet /forums/images/graemlins/wink.gif

The results aren't a fair reflection of a yachts performance and to use the results of one race with different start times and a boat park in 3/4 of the way around wasn't fare. The Contessa fleet is large and well established (which was why I chose it). It will no doubt have some very quick boats in there, with crews that race together and take it very seriously, against a fleet of 1 Wauquiez Centurion 40, a boat 8 ft longer, that should (on paper at least) beat every Contessa in the fleet.

Sorry if my initial post was ambiguous /forums/images/graemlins/smile.gif
 
... and mine was merely to point out that, with a bit of devious coniving, you can make a set of numbers say pretty much what you want them to.

I meant no harm. /forums/images/graemlins/smile.gif
 
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... and mine was merely to point out that, with a bit of devious coniving, you can make a set of numbers say pretty much what you want them to.


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President Mahmoud Ahmadinejad would know more about that than me /forums/images/graemlins/wink.gif
 
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Sorry /forums/images/graemlins/ooo.gif I get carried away by my Good Ole Boat /forums/images/graemlins/ooo.gif

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The profile doesn't look too different to a Swan 36/37 in those drawings, with the exception of the front of the coach roof and the windows. Underwater the swan has a skeg, but your does have classic looks and lovely tumblehome as I saw on the RB thread
 
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