Greenflash

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  1. Greenflash

    Sailing anywhere between Perpignan and Montpelier

    There's a little sailing club with Nacras and Hobies next to the Outremer/Gunboat factory in La Grande Motte. Pretty touristy (very French) June-September though. You shouldn't have trouble finding places to hire little boats along the French coastline. Enjoy!
  2. Greenflash

    Gunboat 68

    Yep, our model builder has taken some initiative with the board design! That mini-68 arrived here all banged up from the travel... we managed to repaint her in time for the boat show but the boards will have to be sorted later on. Fortunately tonight we're having a few drinks next to the real thing...
  3. Greenflash

    Gunboat 68

    I'll take the journalists article from 2015 with a pinch of salt. The Gunboat 60, 55 series, the HH66 "Flash", HH55 Minnehaha are all sailing around quite happily with swept back bows and forward cockpits. In fact, the Irens (GB60,55)and VPLP designs (GB68) with the exterior design done by Chedal Anglay have rounded bow sections, I've personally seen how this is more effective in allowing water slamming against the hulls to peel over the top of the hull and shed the water, rather than creating a great big splash of water. These boats are drier as a result. There will always be situations where you get some spray, at that point I would go hang out at the aft bucket seat and tiller, or close the doors, put the autopilot on and open a beer. Remember, we don't have 'pure' wave piercing bows meant to plough deep through waves like floats on a Ultim, this is a cruising boat first and a racing boat second, the bows are designed with huge volume for sails and toy storage space, you aren't submarining these things in day to day sailing.
  4. Greenflash

    Gunboat 68

    Hi guys! This is all a bit subjective and I was certainly throwing the word 'axe' around loosely. I would say between a reverse/wave piercing and a reverse or swept back axe bow...probably more towards an axe bow. A pure wave piercing bow is what you find on Macif floats for instance, Macif was indeed an inspiration for the bow design during the conception of the Gunboat 68. Here's an interesting article from a few years back that tried to sum in up. https://www.sailmagazine.com/multihulls/a-look-at-wave-piercing-bows-on-multihulls Now, please stop posting photos of steel ships, they are making me cringe!
  5. Greenflash

    Gunboat 68

    I won’t try to get into the nitty-gritty of naval architecture behind this (because I’ll probably embarrass myself!) but in short: yes, there has been significant development of hullshapes over the past fifteen years (the 62 hull was drawn about 15 years ago!). The hullshapes are drawn with a computer, but so were they 15 years ago. The radical difference has come in the form of much better CFD analysis. You’ll notice a similar pattern throughout the raceboat world, even in monohulls with boats becoming faster the hull bottom is flatter because it is less in displacement mode less often. The other striking – and let’s face it, most badass – difference are the axe bows, but the more important thing is a fuller bow section down low to keep the nose up. For the Gunboat 68, VPLP have run several different hullshapes in their CFD program to optimize the hull for the very wide range of displacements it will see from racing to world cruising.
  6. Greenflash

    Hancock

    I take back what I said about people being too harsh on Brian Hancock. I read his latest post on the FP with great interest, hoping that after the response his controversial article received, he would have a more sincere tone, or REACT... somehow. The summary article is not only hurried and boring, he gives John this mention: "It was tense sailing made all the more tense after the news that John Fisher, crew aboard Team Sun Hung Kai Scallywag, had been washed overboard and was lost at sea. " Tense? No shit. There is no sincerity or weight to the words and that is really disappointing!
  7. Greenflash

    Gunboat 68

    I am by no means soma's replacement but I will be sharing some Anarchists' exclusive updates from time to time direct from the factory and happy to answer any questions I can. In this photo we have just moved the boat into the assembly area in the brand new factory. All the furniture is in the forefront ready to be fitted. We moved into this factory about 2 months ago, the lamination shop is all set up, as is the fairing room. The assembly area you see here is still getting some final touches. The Gunboat 68 in grey is awlgrip finish primer that we made a little more glossy, put the boat out in the sun and checked the fairness. I can tell you that thanks to our awesome hull tooling there isn't much fairing on this! The boat will be painted a custom metallic once the deck is bonded. A huge shoutout and thank you to soma for the vision he had on the project, he added incredibly valuable real world insights during the creation of the Gunboat 68!
  8. Greenflash

    Hancock

    To be clear: I am not defending his actions, I just like to see a fair playing field. 1- He was definitely too soon to comment. 3- I see he said they searched for 2 hours and gave up, although probably in his mind meant to be factual that can be read as very 'mean', especially by the crew, so NOT good! Like it or not, hot and nasty debates like this do often create good outcomes for the future, you have to rip the scab off a sore subject to heal properly. Safety will be at the forefront of the new boat's conception and if blue water knee deep in cockpit is not deemed a major safety issue then I will fully support the people with real world experience! Period.
  9. Greenflash

    Hancock

    I think people are being a little unfair on Brian, his timing was a little 'too soon', but he at least has the guts to raise his concerns about the ultra-wet deck and that nothing is being done about it in the future edition. Agree or not, he wasn't shitting on John's loss, he was in my opinion obviously devastated by it and was lashing out in his own way. I don't agree or disagree that he is being a dick, you decide - but it is really going too far to say he is NOT sad or he is disrespecting John's life. The way I see it he is fighting against the wrongs that HE perceives contributed to him dying. Misguided or not, at least he is fighting - and that means something in my book. Sail on...
  10. Greenflash

    3 D Printed sailboat

    I think printing plugs is interesting but would be EVEN more interesting if we could get the resolution and strength to print molds directly. I image you could get strength in the mold by using fiber half way through the process. Joining high def plastic printing with one of the "tape laying" technologies should mean some pretty interesting strength and finish properties. I'm certainly watching this space closely! https://3dprintingindustry.com/news/thermwoods-lsam-process-sets-sail-3d-printed-hull-pattern-125493/
  11. Greenflash

    What happened to Zenyatta - Gunboat 62

    Yep, you can hang pretty much anything off of G10 (Within the limits of ripping the bulkead/hull skins off!) and for the overall weight addition to the build it is a drop in the puddle and well worth the effort - I agree methods like this actually save you time in the long run, especially if you have boxes of pre-drilled and tapped G10 disks that the guys can just grab.
  12. Greenflash

    What happened to Zenyatta - Gunboat 62

    I agree with Soma that some dry heat and a long period of vacuum bag should remove all water (water boils at vacuum pressure). I'd then try to suck resin through the same core laminate, if you can suffer the weight. I could see how water could SLOWLY propagate through core cell cells, I'll go check that one out actually. And agree double cut infused core filled with resin would stop that better to within one cell. Ticking all the boxes as well as not penetrating skins into core below waterline (and yes, of course this is very doable) should give you a good decades-lasting result.
  13. Greenflash

    What happened to Zenyatta - Gunboat 62

    Hi guys, I thought I would shed some light on this in an effort to be technically more accurate: Double cut (kerfed) core that is cut 60% deep will cause the cuts to cross and therefore all the cuts are connected. This is often used in infusion because the core can be bent to some shape and the cuts allow resin to flow through and assists also with sideways flow. Because of the ability to BEND the core without having to thermoform the core, this core is and has often been used on a wet layup (or wet-preg) laminate. "Core bond" is screeded on the core, core is placed down and then vacuum bag applied. Zenyatta was done like this and at the time many boats were built like this - still are! The key point is that all the cuts do not fill with resin. I think if you prefill the cuts you can probably get them full, but I am talking about a typical light-screed raceboat style corebond. So great care needs to be taken to not penetrate the skins, and to join your skins together when making penetrations. I think the mistake made was that during build or after build small holes were made in the inside skin to attach cable mounts etc. Over time these all accept bilge water. Possibly seacocks let water into the edge of the laminate, of course I cannot be sure. Double cut core, with a good infusion, will fill all the cuts with resin. Heavier, but 'safer' over the long run. Note that it is also heavier because solid resin is denser than 'core bond' which can be a resin thickened with a filler or one of the many products designed for this job. Best thing to do is use PERFORATED core, it is lightest and the holes are not connected to one another, so when water gets in it can't go anywhere. Corecell/PVC is closed-cell foam, water cannot propagate through it. Problem with curved areas like hull bottoms is that perforated core needs to be thermoformed. Once thermoformed, this core can be 'core bonded' or infused. The Gunboat 60 and 55 were infused double cut while the new Gunboat 68 is thermoformed, perforated and infused. It should be noted that not all the South African built Gunboats (62,48,66) were built using the same methods and not at the same builder. Look at every example separately and bear in mind the incredible track record of those models in general. Hope the refit goes well on Zenyatta, still a great boat after many years!
  14. Greenflash

    What Is It? Foiling Ghost...

    Bravo Vyleart! Stunning design and a lot of inspiration can be taken from this!