tag:blogger.com,1999:blog-75203927069101556772024-03-13T20:24:10.356+01:00The DNA® A-class catamaran. Five times world champion. Proudly manufactured by Holland Composites.The DNA® A-class catamaran. Five times world champion. Proudly manufactured by Holland Composites.
This blog tells you all you wish to know about sailing fast and foiling DNA A-cats.. PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.comBlogger251125tag:blogger.com,1999:blog-7520392706910155677.post-3951457358104636652016-11-11T17:45:00.000+01:002016-11-11T17:45:50.557+01:00END OF BLOG This blog has served us well. However, time has come to proceed in a different way.<br />
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We will not delete this blog direclty however for future updates and information of DNA, please visit:<br />
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www.dnaperformancesailing.com<br />
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Thank you for reading our blog.<br />
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<br />PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com4tag:blogger.com,1999:blog-7520392706910155677.post-40552219720176379952016-06-07T21:44:00.004+02:002016-06-07T21:46:37.566+02:00European spring championship for Mischa Heemskerk on DNA F1<div class="separator" style="clear: both; text-align: center;">
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Great sailing at Lake garda three weeks before the Worldchampionship In Holland.<br />
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<br />PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com21tag:blogger.com,1999:blog-7520392706910155677.post-32000369914401671062016-05-22T15:41:00.001+02:002016-05-22T15:41:15.515+02:00testing the DNA F1<div class="separator" style="clear: both; text-align: center;">
<iframe width="320" height="266" class="YOUTUBE-iframe-video" data-thumbnail-src="https://i.ytimg.com/vi/W_eH5xtPB3s/0.jpg" src="https://www.youtube.com/embed/W_eH5xtPB3s?feature=player_embedded" frameborder="0" allowfullscreen></iframe></div>
<br />PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com1tag:blogger.com,1999:blog-7520392706910155677.post-33425256916255342222016-05-22T15:36:00.001+02:002016-05-22T15:36:36.725+02:00The DNA F1 <div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgv_WKZhAn_xUEa2lBn5mg8xLKiz9OAB5MKMojKhpLI4fc7hwNfgdJ-W_FH0-wAjn16BjeKGce3vYuV6_VkHaoUm8GOl66TV0NGWOHK51vDQ3sLgJdIPyavvxqYCVyg027VVmkj8ZHfqLz9/s1600/2016+DNA+F1+A-cat++%25281%2529.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="266" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgv_WKZhAn_xUEa2lBn5mg8xLKiz9OAB5MKMojKhpLI4fc7hwNfgdJ-W_FH0-wAjn16BjeKGce3vYuV6_VkHaoUm8GOl66TV0NGWOHK51vDQ3sLgJdIPyavvxqYCVyg027VVmkj8ZHfqLz9/s400/2016+DNA+F1+A-cat++%25281%2529.JPG" width="400" /></a></div>
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<span style="font-family: "verdana" , sans-serif;">After Punta Ala we set up a team to just consider new ideas and design directions. That design team was again Pieterjan Dwarshuis, Mischa Heemskerk as invaluable source of info and Rudo Enserink as designer; all and all the same guys responsible for the G4). By November we had a pretty solid idea of what we could realize and decided to make the jump and invest in a new platform. What you see on these pictures is the result of basically 6 months flat out design work, testing, tweaking and production work. </span><br />
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<span style="font-family: "verdana" , sans-serif;">We went to town for this job.. so many ideas, so many CFD checks, so many difficult goals. What we pulled off in the end is in our opinion a very high quality, high-spec boat. Obviously the main driver was to develop the ultimate optimized boat, and optimized within the class rules. Pictures paint a thousand words but we would like to shed a light on what everyone will see when looking at attached pictures. If you look at the vid, do not mind the shaky footage.. If you think about it, you will be pleased to see we have spent the money on engineering and tooling rather a pro gimballed piece of camera (it is on the agenda though). </span><br />
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<span style="font-family: "verdana" , sans-serif;">Aero </span><br />
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<span style="font-family: "verdana" , sans-serif;">The 2016 boat is new from the ground up and optimized for extremely low windage . With the speeds we reach both upwind and downwind nowadays, aero drag is a serious factor. If you keep in mind that the total driving force resultant upwind is approximately only around 150 Newton, then you understand that in a situation where the boat is doing 13 knts upwind in a 17 knts TWS, the apparent wind is 30 knts. Coming from a country where cycling is the norm, we love to compare with riding a racing bicycle at 55 km/hr; anyone having tried so will understand the importance of windage very quickly. Our answer to that topic is found partly in the new overall sleek design and an extremely streamlined soft deck (it is no longer a traditional trampoline). The main beam and rear beam have been integrated in the airfoil section, the tiller bar and tillers have been integrated in the airfoil section too and lastly we have a fully recessed traveller track. </span><br />
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<span style="font-family: "verdana" , sans-serif;">Stiffness & lightness </span><br />
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<span style="font-family: "verdana" , sans-serif;">Apart from aero, the platform should be class leading in construction too. We were pleased with the previous model but the new boat is truly optimized for ultimate stiffness and lightness. Now this is for the tech savvy people; its hulls are made in one single production run (so not the traditional two halves laminated together) in the autoclave which allows curing under high pressure and high temperature. As a result there is no secondary bonding, and no bonding lines. The hulls weigh in at 11.5 kg each with high fiber content hull skins at 300 gsm. The airfoil shaped beams are cured in the autoclave too. The standard finishing for the DNA F1 is clear coated carbon, as this is the lightest finishing possible (painting in colour on request). </span><br />
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<span style="font-family: "verdana" , sans-serif;">Foiling </span><br />
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<span style="font-family: "verdana" , sans-serif;">The new design is designed for flying from the very start, opposed to the previous generation platform which evolved into one. We have a new beam and foil positioning with a bigger span between rudder and main foil. The foils have been subjected to optimization with minor improvements and we have a completely new rudder head design which brings drastically improved stiffness due to the bigger span of the gudgeons. Longer tiller arms allow for more precise steering and a completely integrated ‘belt drive‘ rake system on the main foils offers accurate adjustment. The hull shape is optimized for trapezing while flying with an ergonomic hull height in the rear. As last the boats width is optimized for trapezing by giving max beam where practical only.
Light wind conditions
We believe the new platform provides a vast improvement in light wind ‘drifting’ conditions, we noticed this should be improved from the previous generation. Rocker has been increased, the bow is finer and the new hull shape also includes an optimized indented area around the daggerboard lower exit to avoid excessive drag. The new kinked front beam is ergonomically spot on for good downwind flat positioning and steering. </span><br />
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<span style="font-family: "verdana" , sans-serif;">For more info, please drop us a note at dna@hollandcomposites.nl. </span><br />
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<span style="font-family: "verdana" , sans-serif;"><br /></span>PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com5tag:blogger.com,1999:blog-7520392706910155677.post-55963117801245357182016-01-03T19:14:00.002+01:002016-01-03T19:14:48.247+01:00The new long video of the Punta Ala A class worlds 2015 <iframe src="https://player.vimeo.com/video/150234048" width="500" height="281" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe> <p><a href="https://vimeo.com/150234048">DNA | HOLLAND COMPOSITES 2015 A-cat Worlds - extended version</a> from <a href="https://vimeo.com/hollandcomposites">Holland Composites BV</a> on <a href="https://vimeo.com">Vimeo</a>.</p>PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com1tag:blogger.com,1999:blog-7520392706910155677.post-85257423730186825772015-09-16T21:13:00.002+02:002015-09-16T21:19:53.086+02:00DNA won the fourth world title A class ! congratulations to Glenn Ashby and Mischa Heemskerk<iframe src="https://player.vimeo.com/video/139455209" width="500" height="281" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe> <p><a href="https://vimeo.com/139455209">DNA | HOLLAND COMPOSITES present the 2015 A-Cat Worlds</a> from <a href="https://vimeo.com/hollandcomposites">Holland Composites BV</a> on <a href="https://vimeo.com">Vimeo</a>.</p>
PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com0tag:blogger.com,1999:blog-7520392706910155677.post-82633183088920503592015-06-19T22:14:00.002+02:002015-06-19T22:15:39.005+02:00fresh breeze testing ...<div class="separator" style="clear: both; text-align: center;">
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Some nice pics last weekend of Mischa pushing the DNA to the limit on flat water and 25 kn breeze .<br />
Topping a scary 28.4 knts top boat speed on the velocitek..<br />
Sometimes even we say don't try this at home :-) at least not without a helmet .<br />
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<br />PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com2tag:blogger.com,1999:blog-7520392706910155677.post-33662440262528630192015-06-19T22:05:00.002+02:002015-06-19T22:05:36.196+02:00nice flight video !<div class="separator" style="clear: both; text-align: center;">
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<br />PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com0tag:blogger.com,1999:blog-7520392706910155677.post-48078153470224355632015-05-20T23:47:00.003+02:002015-05-20T23:48:29.460+02:002015 North americans underway<div class="separator" style="clear: both; text-align: center;">
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Cool picture of bruce flying on day two of the North Americans</div>
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lots of info found on :<a href="http://usaca.info/">http://usaca.info</a></div>
<br />PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com1tag:blogger.com,1999:blog-7520392706910155677.post-27350187335910695752015-05-14T23:43:00.001+02:002015-05-14T23:46:49.408+02:00European season startedThis week the first bigger championship of the season is on the program : the French Nationals, near Marseille.<br />
A good fleet is expected with mainly French boats .<br />
We are curious how ours French DNA guys are doing ! best luck and good winds !<br />
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In the mean time on the other side of the ocean The North Americans start this weekend .<br />
A great 50 + boats fleet also there on the line . Great to see the A class is good health everwhere.<br />
Off course still a lot of discussion about the class developments the last years. Not all sailors are<br />
100% happy about the foiling revolution . We can understand. Change always results in resistance of part of the people involved .<br />
But we may conclude that the majority of the A cat lovers are excited about the development, and that the class is growing as the foiling challenges people to try it.<br />
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An interesting picture I found on the web is this one of reigning US champion Bruce Mahoney ( and our bet for this year too) shows a <i>hiking-foiling-mode </i>on his new Z boards / L rudders DNA:<br />
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In two weeks The Italian nationals are scheduled on Lake Garda .<br />
A great top level fleet is expected including Mischa Heemskerk (NED), Chris Field (GBR) and Sergio Mehl ( ARG) on the latest DNAs<br />
Interesting to see them lining up with the best Sheurers and Exploders !<br />
Stay tuned and have fun sailing your boats !<br />
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<br />PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com1tag:blogger.com,1999:blog-7520392706910155677.post-68476643090814453992015-03-10T22:44:00.004+01:002015-03-10T22:44:37.667+01:00Bruce Mahoney wins midwinter series On his brand new DNA straight out the box Bruce wins the the midwinters serie in FL, USA.<br />
Just a close call with Woody cope, sailing the c boards Nikita.<br />
Especially on the second more windier day, Bruce made a lot gain by foiling very consistent downwind. According to Bruce the new L rudders are adding greatly to the stability during foiling.<br />
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See some pics of the foiling action and some close ups.<br />
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<br />PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com3tag:blogger.com,1999:blog-7520392706910155677.post-13441508414304913652015-03-03T08:51:00.000+01:002015-03-03T08:57:15.071+01:00First New DNA's flying in the US<h2>
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Bruce Mahoney got his new DNA rigged yesterday and send us this nice video of <a href="https://www.youtube.com/watch?v=wyQbWZR5u7U">youtube video Bruce Mahoney Key Largo </a> 'flight out the box '<br />
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Super smooth sailing! <br />
Bruce is Sailing the new DNA with L rudders and Z boards , which arrived in the US last month .PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com4tag:blogger.com,1999:blog-7520392706910155677.post-53243990628848505562015-02-13T12:48:00.000+01:002015-02-16T07:38:20.806+01:00DNA A-cat on steroids<div dir="ltr" style="text-align: left;" trbidi="on">
Hi all,<br />
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Hope you won't mind seeing a blog from an A-cat newbie. Working at Holland Composites whilst being keen on writing and seeing lightweight multihulls moving around our facility day in, day out, it is rather difficult to ignore the still growing excitement & passion and share some of this enthusiasm.<br />
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PJ already wrote about the Gunboat G4 project we have undertaken at Holland Composites. Following the conceived concept by the DNA design team, and Gunboat committing to a realization the G4 had to be built and more people got involved - such as myself. I thought A-cat sailors might appreciate seeing what a small boat from a very prolific development class can just lead to..<br />
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More relevant A-cat news next time, promised.<br />
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Best, Thijs<br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgoCS_oKoKehpxkgp9tt4xn5rDY8hGYW2IcnSbI70vJ7jB58AfcX2wzX4Kk-iIg1eo5KO92sF2ED-s6NJTFLoHGb2t0msxo1F6Bi21AMU00VgjSXYBUrYa7qWa4oKT3wLsOy4csrEQmac4/s1600/DSC_7743x.jpg" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgoCS_oKoKehpxkgp9tt4xn5rDY8hGYW2IcnSbI70vJ7jB58AfcX2wzX4Kk-iIg1eo5KO92sF2ED-s6NJTFLoHGb2t0msxo1F6Bi21AMU00VgjSXYBUrYa7qWa4oKT3wLsOy4csrEQmac4/s1600/DSC_7743x.jpg" height="212" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">DNA A-cat, anyone?</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">A little heavier than an A-cat..</td></tr>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhzyGMP4LbKEHW3zNcWMgNsNSHhPfRVbGrPh-QoMu-KHJ7aex63Q3IsgIBCJ2Mx7mlh7P95rdFYrYvjBQ9A1NsWrm1QlNdmd5vM3w6_1SESsxFfT9irdIThoh1V58DTyU1RZl9qqaYNAek/s1600/DSC_7699x.jpg" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhzyGMP4LbKEHW3zNcWMgNsNSHhPfRVbGrPh-QoMu-KHJ7aex63Q3IsgIBCJ2Mx7mlh7P95rdFYrYvjBQ9A1NsWrm1QlNdmd5vM3w6_1SESsxFfT9irdIThoh1V58DTyU1RZl9qqaYNAek/s1600/DSC_7699x.jpg" height="202" width="320" /></a></td></tr>
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TvRhttp://www.blogger.com/profile/10010339831649322019noreply@blogger.com1tag:blogger.com,1999:blog-7520392706910155677.post-2872139874830388782015-02-09T13:42:00.000+01:002015-02-09T17:17:10.562+01:00<span style="font-family: inherit;">The tapered DNA masts are nowadays produced exclusively for DNA by Fiberfoam. Fiberfoam continues to offer their #14 mast (untapered). </span><br />
<span style="font-family: inherit;"><br /></span>
<span style="font-family: inherit;">We developed
the tapered DNA mast in 2012, and it is a different section than the
commonly used 145x60 mm untapered section. </span><br />
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<span style="font-family: inherit;"><span lang="EN-GB"></span></span></div>
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<span lang="EN-GB"><span style="font-family: inherit;">The base idea was to create a mast which follows the twisted sail shape in a more natural way. See the simulation of the flow on below computer animation. </span></span></div>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJgUK7NBucdVpdWekGjAVlRcikjuCOkjUybIuKrnsJOPqIVhOtG0H2ievYmgH0ucOOYRT_tS8XCLU-qlRMZ7PA4jXxJTI9n4daN4QzxvlBj2pgegJgk_VfZpYByVGc5TqhQHuMlCjSCxck/s1600/flow+and+twist+around+A+cat+mast.jpg" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><span style="color: black; font-family: inherit;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJgUK7NBucdVpdWekGjAVlRcikjuCOkjUybIuKrnsJOPqIVhOtG0H2ievYmgH0ucOOYRT_tS8XCLU-qlRMZ7PA4jXxJTI9n4daN4QzxvlBj2pgegJgk_VfZpYByVGc5TqhQHuMlCjSCxck/s1600/flow+and+twist+around+A+cat+mast.jpg" height="280" width="320" /></span></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-family: inherit; font-size: small;">flow simulation DNA A-cat mast</span></td></tr>
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<span lang="EN-GB"><span style="font-family: inherit;"><br /></span></span>
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<span lang="EN-GB"><span style="font-family: inherit;"><br /></span></span>
<span lang="EN-GB"><span style="font-family: inherit;">The result is a top tapered mast, but the shape also varies over the length of the mast, I hope that below illustration shows the principle. <o:p></o:p></span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi06MrCGYJgDWxsNuox0LOIWoB5AXFcVdE1fQUcUMs9xa9RfC4ubowJQQO46toCpI2i24xVoAT61KS9HSEO7BT37tV4FaVOsSXFvUh3t5W4tCAkBUmzWHQPZvq-33UJSdjUQlmTuzyXzhat/s1600/mast+profiles+top+and+big_bewerkt-3.jpg" imageanchor="1" style="clear: left; display: inline !important; margin-bottom: 1em; margin-right: 1em; text-align: center;"><span style="color: black; font-family: inherit;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi06MrCGYJgDWxsNuox0LOIWoB5AXFcVdE1fQUcUMs9xa9RfC4ubowJQQO46toCpI2i24xVoAT61KS9HSEO7BT37tV4FaVOsSXFvUh3t5W4tCAkBUmzWHQPZvq-33UJSdjUQlmTuzyXzhat/s1600/mast+profiles+top+and+big_bewerkt-3.jpg" height="63" width="320" /></span></a></div>
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<span lang="EN-GB"><span style="font-family: inherit;"><br /></span></span></div>
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<span style="font-family: inherit;">The section
is tapered from approx 160x60 mm in the bottom to 130x45 mm in the
top. The mast base shape is identical to the common 145x60 mm section for the
ease of interchanging parts. The surface area is also identical, to avoid
sailarea problems when sails which are made for standard masts are used. </span></div>
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<span style="font-family: inherit;">We believe this tapered mast has a better aerodynamic shape
compared to the standard section, this results in less drag, better flow
attachment and better performance. It did take quite some time to develop our mast
and to make it reliable and well-performing. However now that is sorted, especially when sailing at
close angles, as happens with high apparent wind speeds, this mast is
superior.</span></div>
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<span lang="EN-GB"><span style="font-family: inherit;"><br /></span></span></div>
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<span lang="EN-GB"><span style="font-family: inherit;">The angle
before losing flow is definitely smaller the standard section, which is
great when you need to point high, or want to have a super flat sail
in flat water high wind conditions .<o:p></o:p></span></span></div>
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<span lang="EN-GB"><span style="font-family: inherit;">All
bend specs are available, and the mast curve is slightly more progressive than the
others which is what you may want.<o:p></o:p></span></span></div>
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<span style="font-family: inherit;">Give me a call, or drop me a message at dna@hollandcomposites.nl for more info. </span><br />
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<span style="font-family: inherit;">Cheers, PJ </span></div>
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PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com1tag:blogger.com,1999:blog-7520392706910155677.post-76945439930373024582015-01-14T10:55:00.001+01:002015-01-19T22:42:57.865+01:00<br />
At Holland Composites, we are working hard on the Gunboat G4 which is in many ways a DNA A-cat on steroids. However, there is much more going on than this big boat only and in the next few months we will be working on a new website full of the latest details with tips and tricks.<br />
<br />
You may have seen the video footage from Mischa or myself, showing consistent foiling and I thought it would be appreciated if we would add some pictures with details of the latest 2015 DNA A-cat.<br />
<br />
Please see below.<br />
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Any questions or remarks, please drop us a line at DNA@hollandcomposites.nl, thanks! <br />
<br />
PJ<br />
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<tr><td class="tr-caption" style="text-align: center;">Z-boards clearly visible </td></tr>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgUwEaH2sDa448B7a75q7kGCCJEp5rrJ5xewVSyJMIXuQXADQ3mSL0QtYn_ZaK8jwsy448OOTHxvAGzUIvSBvyy8In4jNpTbQkTXI_dazlpGk8T4hAIstmAobJz6XY0ylTs6KEfXFUwONVC/s1600/Holland_Composites_A-cat_production+(27).jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em; text-align: left;"><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: left; margin-right: 1em; text-align: left;"><tbody>
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<tr><td class="tr-caption" style="text-align: center;">Detail of slider system </td></tr>
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<tr><td class="tr-caption" style="text-align: center;">All carbon cassette L-rudder</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Z-board with DNA logo</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">L-rudders awaiting shipment </td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Shipment being loaded in 40ft container</td></tr>
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEggCvYcJmZZ8DGFFAlKqqgoumEKd4dgBAwUxy4fPFHAcQQOVn_6Eakjh-liS9zD-8iNBG_H-VGrjIA3oxNXu28s52Auo92fin79xswHacWQsqwL5vV52yWuBMw6T36f-AOSuEJClC00Q9pJ/s1600/Holland_Composites_A-cat_production+(24).jpg" imageanchor="1" style="clear: left; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEggCvYcJmZZ8DGFFAlKqqgoumEKd4dgBAwUxy4fPFHAcQQOVn_6Eakjh-liS9zD-8iNBG_H-VGrjIA3oxNXu28s52Auo92fin79xswHacWQsqwL5vV52yWuBMw6T36f-AOSuEJClC00Q9pJ/s1600/Holland_Composites_A-cat_production+(24).jpg" height="213" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Detail of L-rudder</td></tr>
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<!-- Blogger automated replacement: "https://images-blogger-opensocial.googleusercontent.com/gadgets/proxy?url=http%3A%2F%2F2.bp.blogspot.com%2F-RdPCkcCqyl0%2FVLY66n_2AnI%2FAAAAAAAAAW0%2FDMjWz0DxgJU%2Fs1600%2FHolland_Composites_A-cat_production%252B" with "https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgUwEaH2sDa448B7a75q7kGCCJEp5rrJ5xewVSyJMIXuQXADQ3mSL0QtYn_ZaK8jwsy448OOTHxvAGzUIvSBvyy8In4jNpTbQkTXI_dazlpGk8T4hAIstmAobJz6XY0ylTs6KEfXFUwONVC/s1600/Holland_Composites_A-cat_production+" -->PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com1tag:blogger.com,1999:blog-7520392706910155677.post-16304990331438763852014-11-21T13:40:00.003+01:002015-02-09T12:33:08.157+01:00Hi,<br />
<br />
This is an email to inform you of the latest DNA developments.<br />
<br />
Sailing fast cats caught my attention in the early ‘80s and after graduating from the Delft Technical University as an industrial designer I was very keen on establishing my composite boating company (Holland Composites) in 1992 to explore new lightweight production techniques. Building >15 meter yachts with carbon prepreg since 1994, we have made quite a bit of progress since those early days. Not just the yachting industry, but even more in the building and industrial markets where we developed many innovative products.<br />
<br />
The A-cats were a hobby and when things got more serious in 2010 after having developed a new design with Arno Terra and Rudo Enserink, I thought it would be wise to split those activities from Holland Composites as the hobby and professional work might not mix well during office hours. This is how and why I founded DNA, both as a brand and as a collective at the same time. Within DNA we cooperate intensively with open-minded experts such as Mischa Heemskerk, Rudo Enserink and Peter Johnstone to keep pushing boundaries and explore new possibilities in the widest sense of the word whilst having fun out on the water.<br />
<br />
Keeping things really separated with my normal job during daytime has however been a struggle at times and to make things more easy & to offer a better DNA customer experience we have now decided to integrate DNA as a brand for fast cats into Holland Composites. The companies have been reunited to make it one family. Some of you know the name Holland Composites already, as Holland Composites is developing and building the Gunboat G4 for example although we do more than boating projects. My partners Sven Erik Janssen and Thijs van Riemsdijk, the first a (passionate) sailor and the other not (yet) handle the integration. <br />
<br />
What changes for DNA A-cat customers is that sales of boats and parts are now handled by Holland Composites directly and no longer by Remco of Sailcenter. So the guys that already produced the DNA A-cats and know every detail from the earliest development will now also assist with the sale. A webshop is in the making to make ordering a customer-friendly process and will launch somewhere 2015. Remco has offered DNA customers great service since Arnos departure in 2013 and he will be happy to do so in the future for service or non-standard items. For all your custom needs we ask you to work with a chandlery as Sailcenter. <br />
<br />
Another development is that we have reached an agreement with Fiberfoam whereby they will exclusively produce our tapered DNA masts. Fiberfoam will also continue with their own standard design. The first 10 DNA masts have just been manufactured by Fiberfoam, complete with carbon mast base and adjustable carbon spreaders.<br />
<br />
I would almost forget.. The very fast 2015 Z-daggerboard and incredibly sweet L-rudders have completed their testing protocol and are now available for purchase.<br />
<br />
For any questions or orders In the meantime I kindly ask you to direct your questions to DNA@hollandcomposites.nl. <br />
<br />
PJ<br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgtJYUlpAoVGAiZr7aK7E0_zz9whQscG_AruHwaXSZBY38HjTI2x-W8MGn80wVKbmsmc-cUrg1XGveIxKsWKe7C6s-al8yEAnMV7CxrTLRKP7IWs1vvum3JP9hRv3e_RjZXqpUOK6Qn6SH8/s1600/DNA+and+Holland+Composites+3.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgtJYUlpAoVGAiZr7aK7E0_zz9whQscG_AruHwaXSZBY38HjTI2x-W8MGn80wVKbmsmc-cUrg1XGveIxKsWKe7C6s-al8yEAnMV7CxrTLRKP7IWs1vvum3JP9hRv3e_RjZXqpUOK6Qn6SH8/s1600/DNA+and+Holland+Composites+3.jpg" height="245" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">2015 DNA A-cat with cassette L-rudders - we made a special GUNBOAT edition</td></tr>
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PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com0tag:blogger.com,1999:blog-7520392706910155677.post-55569911497760966892014-11-12T21:08:00.001+01:002015-01-22T14:23:20.460+01:00Working on the DEFINITIVE original Z-board <div class="separator" style="clear: both; text-align: center;">
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Mischa testing the boards this week . blasting along at great control</div>
PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com0tag:blogger.com,1999:blog-7520392706910155677.post-38398968010273044022014-11-12T21:06:00.000+01:002014-11-21T13:16:48.057+01:00working on the DEFINITE original Z board<div class="separator" style="clear: both; text-align: center;">
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We recently made good progress in getting the flight even more controllable !</div>
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New Z foils in the Autoclave by Holland Composites </div>
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The shape is as the first ones , but the construction , the detailing and the flex is optimized !</div>
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In the meantime we are working on a totally new rudder package; </div>
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all standard on the 2015 DNA</div>
PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com0tag:blogger.com,1999:blog-7520392706910155677.post-65239421194474403502014-07-27T13:54:00.002+02:002014-07-27T13:54:23.370+02:00Flying the DNA Hi All A class sailors .<br />
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I hope this video, which was shot in two sessions on the lake by my home, (with Gopro camera on the helmet and one time on the boom), will make clear to all skeptics that flying an A class is not only for the Americas' cup pro's.<br />You see, the way of lifting on the foils is controllable , very fast and lot of fun .<br />The skills you need are manageable. Off course you need to be fit to get the max out of it. Just like surfing or skiing. But not dangerous.<br />The best sailors off course will always get more out of it, that is the way it should be.<br />The Quest for changing the rules is useless . The rules pushed us developers in the right direction!<br />The boat still is simple, elegant and extremely fast . See the vid . Effortless doing 23 kn peak speed at a deep angle.<br />And what is unique on the configuration: the boat is upwind and in light conditions still fast ! An A class which has super stable L foils (which are not complying with the rules ) , will<i>maybe</i> be easier to sail downwind, but will surely suffer upwind and in light wind, and will be a headache to manage onshore and in shallow waters.<br />The boards used in the video are our newly developed " Z boards" which give great allround performance, ease of control and are going like a Boeing.<br />After flying for a year with the J boards , which are also very very fast, the Z boards are a development from that to make life easier.<br />All the new A class like they are now ( also our fellow manufactures like Exploder and Sheurer etc ) are a dream to sail , a true result of a development class .<br />Stop debating , start flying, and most of all enjoy it !<br />
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PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com2tag:blogger.com,1999:blog-7520392706910155677.post-38929807928240574392014-07-04T16:14:00.001+02:002014-07-04T16:14:43.617+02:00The new era<div dir="ltr" style="text-align: left;" trbidi="on">
Foiling is the new sailing. We saw it happen Round Texel, in the America's Cup, with the Flying Moths, the flying Laser, the Flying Phantom.<br />
Many projects and still much to learn. Although the flying Nacra won line honours at Texel the non-foiling boats were still quite close at the finish.<br />
The older boats show consistent speeds and the foilers mix moments of speed excellence with slow modes. Only Glenn was always fast ;-)<br />
That conventional boats are stll close sometimes does not mean that it does not work, it only shows that it takes effort to get all performance out of it.<br />
If people practice more their performance will increase dramatically and we will see that even upwind foiling can be put to work on the smaller beach cats.<br />
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It was also suprising to see how far the foil assisted Nacra 17's finished in front of the best F18's.<br />
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Some people tell me that we still need floating classes for the clubracers. I disagree. The foiling boats can be sailed by the clubracers too especially because cartwheeling and nose dives are a thing of the past.<br />
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The Nacra 20 and the Flying Phantom are big boats, too big maybe for the clubracer, but an open F18 with J-boards and elevators will be an allround boat and a thrill to sail.<br />
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It is not likely that the F18 class will open the rules, which leaves the room for a new class. A typical case of creative destruction and a proof of the validity of true box rule classes.<br />
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A factory class such as the FP is just a solution for the short term. It would be better that more types race in the same class; F16 and F18 style. One designs get obsolete too quickly , see what is happening with the X40 which is a yesterday's superboat.<br />
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The Vink review on catssailingnews is great, his smiles match the bog the smiles of the foiling A-cat sailors.</div>
Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7520392706910155677.post-81272421787318573702014-07-03T13:02:00.001+02:002014-07-03T13:29:40.899+02:00Flying DNA<div dir="ltr" style="text-align: left;" trbidi="on">
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Mischa flying at Garda with the new Z-boards Glenn also used at the Europeans. The boards use an asymmetric profile supplied by D3 Technologies. Due to the profile the boards no longer ventilate, which leads to long and stable flights.<br />
Rudders are the short Exploder ones with the small asymmetric wingle/elevator.<br />
The shape of the board is the result of lots of testing since Oktober 2012.<br />
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I can make the boat fly in 7-8 kts of breeze. I did it too in 22 kts of breeze. Control is great, the only hairy moment is if you have to wind up to change course. You have to keep the boat flat, step forward, steer-up 90 degrees and regain control at a higher angle with less speed. Boat will easiliy jump out of the water but that is OK. Good news is that you can make the boat fly while sitting on the side, you will sail very deep and simply pass the C-board boats.<br />
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It is possible to sail with the windward hull lower than the leeward hull, though the best way is to sail the boat flat. You can keep it flat by steering and sheeting for balance as you see Mischa is doing in the video.<br />
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Upwind you can use the same settings as downwind, though some sailors reduce the rake of the weather board. The weather board is only raised while floating downwind or in very marginal circumstance upwind.<br />
Upwind the performance is similar to the latest J-boards, perhaps you gain a little bit of height too.<br />
Upwind in a strong breeze you can make the boat fly too, I did see Glenn do it in race 9 when he overshooted the mark. Angle is not too good yet, but the sailors will find ways to improve that.<br />
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In the beginning it feels scary as it goes so fast and you simply do not know where it ends. When I started with it I could only see a big explosion of carbon pieces, but when that did not happen, my confidence was boosted and I started to enjoy it. Now all foiling brings a big smile on my face.<br />
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You have to work hard and the concentration you need makes it sometimes exhausting. To my suprise it was easier on my legs than trapezing downwind on the C-boards. On the C-board boat I often suffered from overheated thighs but that did not happen while foiling.<br />
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You have to anticipate more as you need more space to avoid contact with other boats. The steering for balance makes your riding lane wide, but once you are aware of that and starts to change course in time life is simply great. Nothing better than flying with some other boats to the gate.<br />
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Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7520392706910155677.post-68308737934409971312014-06-30T14:39:00.002+02:002014-06-30T22:50:06.595+02:00Flying high<div dir="ltr" style="text-align: left;" trbidi="on">
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I have just returned from the Europeans in France. It was awesome. I improved my flying a lot and had my moments of glory while foiling. Foiling through a fleet where many were just floating and then see the surprised faces.. Priceless.<br />
Glenn simply outsailed the rest of us. I could keep up with anybody downwind but with Glenn.<br />
He simply sailed deeper and faster and gained hundreds of meters downwind even on the foiling boats.<br />
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Learning to fly is a lot of fun and the learning curve is steep. After just two days of training my foiling was competitive but lots need to be learned to foil at the level Glenn is showing.<br />
The DNA, The Exploder and the Scheurer were all flying fast and easy. Sandro has the most stable and consistent flight on his Scheurer. He used big asymmetric J-board which he designed with his brother. He is the new European Champion. Jason Waterhouse showed some really stable flying on the Exploder and is the new kid on the block, all DNA's with the new boards (PJ, Chirs, Arno, Glenn) showed excellent speed downwind.<br />
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Conditions at the lake were difficult; big shifts, windholes and often just not enough wind to foil properly. Once you get it on the foils you can gain hundered of meters, but if you try to force the boat on the foils, you start sailing too high and will loose many meters as well.<br />
If you can make it work foiling is blazing fast, but it sometimes hard to find the right setting if the circumstances are not ideal. We definitely need more practice.<br />
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The trick is to get the boat in second phase. Second phase is when the boat is high on the foils and starts to accelerate. The sensation is incredible.<br />
Due to the winglets you will not capsize easily in a cartwheel. Basic flying is not more difficult to master than to trapeze in a C-foil boat with winglets. The winglets (or elevators) give you the control.<br />
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Foiling has one big downside:<br />
Non-foiling races become unbearable....<br />
You need just one big gust, but if the gust is not coming you will not foil.<br />
If you can make it fly in the right gust you can have a prolonged flight even if you sail in areas of less wind.<br />
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Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7520392706910155677.post-6042620720047438462014-06-04T07:27:00.001+02:002014-06-04T14:52:15.124+02:00New America’s Cup Protocol<div dir="ltr" style="text-align: left;" trbidi="on">
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The AC 35 will be sailed on 62 ft foiling catamarans and the AC45 will still be used for the AC series. The AC 45 will probably be updated to a foiler in 2016.<br />
The AC 34 attracted only four teams while the intention was to create a business model in which teams could be economically viable.<br />
With the AC 35 the AC returns to its roots and seems to have accepted that it will be a billionaires game once again.<br />
So far 4 teams are ready to participate: Oracle, the defender, team Australia the Challenger, Artemis and Prada. Team New Zealand might be absent this time, an official statement of the team is expected later this week.</div>
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The choice for the AC 45 is understandable as most teams already own these boats but on the other hand it would make sense to use a 32 footer like the GC 32 which is much easier to operate. Starting with a non foiling AC 45 will make the AC series irrelevant despite the obligation for the teams to participate in the series.</div>
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The crew on the AC 62 is reduced to 8. Nothing is yet known about the possibility to use stored power.</div>
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Using a smaller boat will not lead to a too significant cost reduction as the teams seem to be willing to spend whatever it takes and the building costs of the boats are just a fraction of the total budget.</div>
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In the AC 34 teams were very limited in what they could do with the foils and the foil systems. I expect that active foils are permitted this time but the opposite may be true also.</div>
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The AC 34 changed the sport and the finals were sensational.<br />
If the teams are free to take the AC 62 to a new level interesting things may happen. If the development is too restricted the AC 62's will be just smaller AC 72's. </div>
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The organizers have eliminated any influence of the ISAF which is understandable but the ISAF may strike back by excluding competitors from their events. This will effect both AC and Olympic sailing.</div>
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Last cup only the first AC 45 events and the final were successful. Better keep it simple and skip the AC world series and just have one challenger event and the final. I like to see the AC sailors in other events too. It was special to see Jimmy, Dean and others sail A-class events. By participating in regular events they create a bridge between the Cup and the rest of us sailors. The AC was less of a bubble, but I fear that we will see the return of the AC bubble, where the AC gets pretty loose from the rest of the sport, despite all intentions of Larry.</div>
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The A-class is still the best training platform for any AC skipper. All ETNZ sailors at the A-cat Worlds told others that flying the A-cat is harder then flying the big beast. The lack of inherent stability makes it more subtle and more refined. Flying an A-cat is not that hard but to get everything out of it sure is. Larry is an excellent sailor himself it would be great to see him on a flying A-cat too.</div>
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Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7520392706910155677.post-80244862502494578422014-06-03T11:57:00.000+02:002014-06-04T10:26:18.328+02:00Mischa wins European Spring Championship at Lake Garda<div dir="ltr" style="text-align: left;" trbidi="on">
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Mischa did win convincingly this regatta. The second race he finished second after breaking a daggerboard. After that he sailed with one proto board and one conventional J- board and did win the remaining races. Roeland scored a neat fifth with DNA J-boards. PJ lost some places after he torned his sail in race 6.<br />
Luca and Thilo were second and third with conventional C-boards and Eugenio Calabria was very fast on his C-board DNA too.<br />
Mischa did win the way he did in Islamorada: pure sailing skills and some extra bodyweight. It is good to see a 90+kg guy go this fast.(see one of his excellent starts at <a href="https://www.youtube.com/watch?v=00nPkJd6WzE">Youtube</a>)<br />
Helmut Stumhofer sailed an excellent regatta and finished fourth on this Scheurer with J-boards.<br />
Bob did hang in on his Exploder with J-boards but clearly missed practice in those circumstances.<br />
At least 7 of the top 12 were foiling boats.<br />
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All foilers struggled in the leg to the offset mark. Sailing a reach is still challenging as you launch yourself quite easily. The sailors still do not know how to push the boat in a reach and are unaware of the limits. It is hard to sail a foiling boat if you cannot push it. Downwind the C-board boats got in a skimming mode sailing very effectively over the short waves. The foilers had some difficulties as he steep waves tend to change the angle of attack of the boards which caused many 'wheelies'.<br />
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In the 10-16 kts range the foiling boats clearly outpace the rest. It is good to see foiling Exploders, Scheurers and DNA's (and the Askell in France!, where is Bimare??)</div>
Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-7520392706910155677.post-15832033834692754982014-05-19T20:10:00.001+02:002014-05-19T20:32:08.691+02:00 Going like a Boeing !<h4>
Mischa showing how its done .</h4>
Watch the steering for balance, sheeting in and easing....<br />
moving body weight,steering the foils.....<br />
Going up to 22 + knots boat speed, in 12 knots TWS!<br />
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See this link for nice HD video:</h3>
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<a href="http://vimeo.com/95609858">Misha Heemskerk @ A-CAT Event Hellecat | 17 may 2014 | © Danny Broersen</a> from <a href="http://vimeo.com/user28193428">Danny Broersen</a> on <a href="https://vimeo.com/">Vimeo</a>.PJhttp://www.blogger.com/profile/06402417218973109805noreply@blogger.com0