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  #2941  
Old 11-07-2012
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Orc vpp

Very interesting information about a major alteration on the accuracy of their Velocity Prediction Program (VPP) to be implemented for the 2013 sailing season.

I hope that they get it right this time and that an unfair advantage is not given to heavy boats regarding light ones (I am talking of modern boats) as it was till know.

This is very important because this is what defines the shape/weight of many cruiser-racers that to be winners under the past formula would have to be lesser good sailboats. That would be a right step towards boat development.

They say:

the Offshore Racing Congress (ORC) is pleased to announce a major step forward in the accuracy of its Velocity Prediction Program (VPP) to be implemented for the 2013 sailing season. One of the principal elements of this program, the Residuary Resistance (Rr) formulation, has been revised to now be more accurate for a broader range of yacht types that race within the ORC fleet database.

This new innovation is the result of an extensive multi-year study conducted by the International Technical Committee (ITC) in which historical data derived from tank test results has been combined with new research using Computational Fluid Dynamic (CFD) tools to create the new formulation.

"This is a huge step forward in solving a difficult problem which has faced VPP research for many years," says Bruno Finzi, Chairman of ORC. "The Congress applauds the ITC for the completion of this major project that will benefit all boats racing in the ORC fleets around the world."

The new Rr formulation used in the new VPP is producing theoretical predictions which are much closer to the measured performance data taken from numerous boats in the ORC fleet.

"We looked at this carefully to help validate our results. The implied wind calculations are also much closer to that observed on the race course," says Alessandro Nazareth, Chairman of ITC.

The Rr project's new formulation was the result of collating the relevant Delft Systematic data, analyzed by ITC member Kay Enno Brink and the CFD results coming from ITC's Philippe Pallu's work at CRAIN and the Fine-marine code work performed by new ITC member Jason Ker. Another ITC member working on this project was Andy Claughton of Southampton University.

"Validation of this new formulation has been very important to ensure that all elements of the fleet are treated fairly," says Claughton. "Our tests indicate that if any race from the past is rescored using the new rule the spread of corrected times for the first 10 or 15 boats is reduced, sometimes by 20-30%. This is fantastic progress."


ORC ANNOUNCES NEW IMPROVEMENT TO 2013 VPP

I guess this is really about lighter boats not to be unfairly penalized because designers were complaining about that and Jason Ker had a leading position on that complaint, probably because he is just one of the leading NA whose boats win, light or not

As they quote the work and contribution of Jason Ker for this new model, so I guess it is just the case.

This is a major step in what regards conditions for better sailing boats, a bigger than most would think. Shapes of sailing boats have been determined along the years by racing rules and the type of shapes/weight/draft they favor.


...

Last edited by PCP; 11-07-2012 at 12:27 PM.
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  #2942  
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Fox 10.20 Capado

Talking about small performance cruisers that can sail far away:

This guys seems to have a lot of fun

The first part of the movie is interesting in what regards sailing.


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  #2943  
Old 11-07-2012
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Acciona Open60

Opc11 and I posted already about this boat. Look at this magnificent Video. If Acciona finishes the race it will be a victory and they will have proven their point: It is possible to circumnavigate using only renewable sources.

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  #2944  
Old 11-07-2012
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Vendee Globe

2days to go!!!!

Some more racers:

Jean le Cam


Jean Le Cam et SynerCiel vus d'en haut por VendeeGlobeTV

Bernard Stamm


Teaser Cheminées Poujoulat por VendeeGlobeTV

Bertrand de Broc


Clip hélico Votre Nom autour du Monde por VendeeGlobeTV
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  #2945  
Old 11-07-2012
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Moth, best off 2012

I really love these machines. They should piss any sailor in a "normal" boat Look at the difference in speed. I still remember when the first guy was doing this. Everybody was saying the guy was crazy and that it was a circus act. Well, not anymore

ZHIK NAUTICA 2012 Moth Worlds Best Of from VIDEO.JUERGKAUFMANN.COM on Vimeo.

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  #2946  
Old 11-08-2012
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Salona Shipyard

An interview with Kresimir, the director of Salona Yachts, by European boat builder magazine.



Well. I already knew that, but it explains why a high tech high quality brand with a very specialized construction like Sydney Yacht looked to Salona to build its boats in Europe.

Regarding what we says about having recovered to the same production numbers as 2007 (before the crisis), to understand the importance of that, well, Benetau is making half the number of boats and is not one of the brands that is doing badly.
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  #2947  
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Sydney GTS37

So, why I am making all all this noise about Salona producing Sydney yachts? Are they really that fast?

Let’s look at the dimensions of the 37 and compare them with one of the fastest performance cruisers of about that size, the XP38:

Lengnt : XP-11.58m…… Sydney-11.4m weight: XP- 6775kg….Sydney 4950kg

Beam: XP- 3.70m……Sydney- 3.52m

Draft; Xp-2.40m……Sydney- 2.45m

Ballast ratio- XP-41%----Sydney-?

Regarding Ballast they don’t give the number but that is not by the same reason Benetau does not include that information on the Oceanis line. I am pretty sure that this boat has a B/D ratio at least equal to the XP and probably superior. It has to have to carry all that sail area with a smaller beam.

Sail Area upwind XP- 87.5m2……Sydney- 80.6m2 (the XP with a 106%genoa the S with a iRC Jib)

Downwind Area Xp-178m2…….Sydney – 195m2

So, do you get it? This boat is going to smoke a XP 38 and it will be among the fastest boats around for its size being faster than almost all 40ft performance cruisers.

These boats have to have a hi-tech construction and normally are much more expensive even than a Xyacht. Not anymore, now, made by Salona they announce a great price:

219 000 euros with and aluminum mast and 249 000 euros with a Carbon mast. Well, that is a lot of money for a 37ft but that will be a lot less than what costs a boat with approximated performances like the Santa Cruz 37.


KER says about this design:

The Sydney GTS37 design is the fi rst of the new GTS range which we have been contracted to provide designs for Darren Williams,the MD of Sydney Yachts and a keen yachtsman himself felt that the market wanted more performance rather than just another heavyweight windward-leeward specialist, so having sailed on the Ker 53 Cruiser-Racer and experienced the genuinely high performance cruiser-racer concept Sydney Yachts asked Ker Design to put the latest ideas and technology into the new GTS range.

We first explored the low-road in weight, putting on a fin without bulb in order to reduce the required sail area and keep the rating down, but aside from being competitive we couldn’t really get excited about the concept and couldn't see why the end customers would either. We were stuck in a middle ground with a modern hull shape and form stability in spades but still too heavy to really take advantage of the advanced shape.

So, not satisfied, we threw away what we’d done and went back around the design loop, much lighter with the overall displacement,bulb keel, taller rig.

When we computed the drag with the CFD codes(we mainly used Dave Egan’s Flowlogic code, for which Ker Design recently acquired a 64 processor cluster to allow us to create a full drag matrix) and crunched the numbers in the VPP, we found that not only had we made a significant gain in speed, but the handicap competitiveness was also improved, which was later confirmed by the trial certificate.

Worrying that our in-house CFD results were too good to be true we asked Charles Crosby of Cape Computational Fluid Dynamics to compute some important drag points using different CFD software, but with the differences coming in within 0.5% of relative drag, (which typically equates to only one or two IRC “points” of performance), and in the safe direction, this just added confidence that we were on the right track. The result is the Sydney GTS37 which is able to match the faster 40’cruiser-racers around the track in all conditions, plane away from them as the wind increases and give a very good chance of winning on handicap.

An important side-benefit of this development is that whereas the narrow canoe hull forms of the contemporary IRC cruiser-racers are disliked by the ORCi rule, the more voluminous hull form type we have used in our Sydney GTS37 is well favored, as well as providing more living space below.

Aside from the general performance characteristics, other features we incorporated into the Sydney GTS37 are the ergonomic cockpit layout, twin wheels, carbon rudder stock, stainless steel keel and mast support structure for stiffness and reliability.

The Sydney Yacht brief was to provide a boat for those who have a wish to do a bit of cruising, yet sail fast and competitively, but it also works well as an option for those that want to race the fastest 40’cruiser-racers on-the-water, as well on the handicap board.



Well, Ker knows what he is talking about since its racers are winning practically everything that is to be won:

Results | Ker Yacht Design

So do you get my drift on why I was happy for this boat being produced in Europe at a competitive price?

Besides the boat is beautiful:














In an interview Ker referred to the 37 and 43GTS in a slightly different way, but also an interesting one:

After a number of spins of the design loop, we have finally settled on the high-performance road for the new Sydney GTS37 & GTS43. Reducing the overall weight, maximizing the waterline length and ballast ratio. Not only does this fit well with our general design philosophy, but it also came out of our studies as being the most competitive route, something that bodes well for IRC. The hull shape is also very competitive under ORC.

The origins of the shape can be traced back to research on AC90's (2007-2008), which is perhaps the first time the full weight of AC R&D resources was applied to an unconstrained hull form, leading to some considerable advances over a six month period. Adapting and applying the lessons we learned then and since to the problem of a fair-form IRC racer, we ended up with a powerful but low drag hull form that picks up additional stability when it heels. The transom width is moderate on the sailing waterline but on deck the max beam carries aft to allow the crew to sit further outboard and also give the helmsman very good visibility of telltales and waves.

A strong characteristic of our designs has been that they are all-rounder’s, able to pick up top results whatever the conditions.

The Sydney GTS37 & GTS43 will be no exception, with a generous sail plan ensuring light air performance, good stability for reaching and upwind, while low drag is always helpful! Most of her competitors are relatively heavier.

We found through our CFD analyses that with our powerful hull form we were able to reduce displacement while still remaining competitive in windward-leeward racing but gain a lot of performance downwind as the wind increased and in light air. Of course a great side benefit of reduced displacement is that the boat will be more responsive and fun to sail, the GTS37 being over 10% faster downwind in a breeze than a 40’ racer-cruiser from one of our competitors and the GTS43 even faster!


.....

Last edited by PCP; 11-08-2012 at 11:26 AM.
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  #2948  
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Re: Salona Shipyard

Quote:
Originally Posted by PCP View Post
Regarding what we says about having recovered to the same production numbers as 2007 (before the crisis), to understand the importance of that, well, Benetau is making half the number of boats and is not one of the brands that is doing badly.
I would suggest to check Hanse Group Financial Reports (or any other publicly listed builder) HanseGroup - Geschaeftsbericht 2011-2012, quite interesting info.

btw "Within Germany, it has already been resolved to close down the production facilities for Dehler yachts in Meschede-Freienohl by the end of 2012 and to transfer production to the venues in Greifswald and Goleniow, Poland. Outside of Germany, the subsidiaries in France and Norway are also about to be closed down. Thanks to these measures, substantial cuts in costs are expected in future."
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  #2949  
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Re: Salona Shipyard

Quote:
Originally Posted by G1000 View Post
I would suggest to check Hanse Group Financial Reports (or any other publicly listed builder) HanseGroup - Geschaeftsbericht 2011-2012, quite interesting info.

btw "Within Germany, it has already been resolved to close down the production facilities for Dehler yachts in Meschede-Freienohl by the end of 2012 and to transfer production to the venues in Greifswald and Goleniow, Poland. Outside of Germany, the subsidiaries in France and Norway are also about to be closed down. Thanks to these measures, substantial cuts in costs are expected in future."
Hi G!,

You are given me work to see what you want to say

The market climate for sailing yachts has continued to become murky in fiscal year 2011/12. The world market for sailing yachts with lengths between 10 and 20 metres has shrunk for the seventh year in a row. The main reason for this lies in the national debt crisis in Southern Europe. An internal HanseGroup market study has quantified new orders for the worldwide market for sailing yachts in 2011/12 at a minus of 8.8 % in comparison to last year.

In this connection, we are very proud to have slightly increased our turnover.


HanseGroup - Geschaeftsbericht 2011-2012

Yes Hanse is doing good but even so the results are way below from the ones of 2007 and I mean by an order of magnitude. Even with reasonable results, as you pointed out, they have to close factories.


Regards

Paulo

Last edited by PCP; 11-08-2012 at 11:37 AM.
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  #2950  
Old 11-08-2012
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Re: Interesting Sailboats

Paulo, if you have the time, please go to the website: ninfayachtsdotcom, and tell me what you think about the "calipso 36"

I am unable to post the link directly as i have to few posts in this forum.

A traditional looking yacht made from wood/epoxy.

Last edited by Marsvinet; 11-08-2012 at 02:52 PM. Reason: added some more.
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