Discussion in ' Multihulls ' started by landboundSep 20, Log in or Sign up. Boat Design Net. I am no Sailor � as a child � so long ago I won't tell you when, I sailed 8 meter sailing boat work and beach cats. I'm semi retired in Bali, Indonesia and thought I might try the water. I surfed the internet and thought a TomCat 6. Sadly Indonesia has high import duties and landing a foreign boat into Indonesia virtually doubles the price.
I approached a young naval architect in Bali with a view to building something comparable in Indonesia. He told me what I had in 8 meter sailing boat work and where Boxt wanted to sail was unsafe in such a small boat and that 8 meters was a safer size.
I told the architect what I wanted, safety first, shade second and the simplest sail plan possible. An unstayed Uni rig would be my ideal. In short a giant Hobie Bravo with shade. I did not really want anything in the hulls at all but my significant other is not too keen on answering the call of nature in the oceanSo I changed my wish list to an enclosed head sakling one hull and a closet in the.
Things do get pinched in Bali so locking things in the hulls is not such a bad sailnig. I did not want a galley, I have no interest in sleeping in a a narrow coffin. Electrics are not important- happy to use a torch.
I would 8 meter sailing boat work on board a waeco cooler and might bring a BBQ. 8 meter sailing boat work explained that my choice of a cat was dictated by deck space not speed and that bobbing along at 6 knots was fine with me. My desire for a simple sail plan was not simply dictated by being a crap sailor but also because after observing all the cats in Lembongan Bay over two weekends not one raised a sail.
My suspicion is that the effort of raising the sails for a short trip back to the mainland left the owners cold and the temptation to 8 meter sailing boat work on the motors was too strong. I know that I can be lazy too, so a single sail with a single control a la Hobie Bravo I might just be more likely to raise it than turn a key.
The young Naval architect came back with some plans for a lovely boat but not all what I wanted, his boat would be fast, sail well and look good. The architect told me what I wanted was impossible and crazy. You could not have a bimini with 2 meters clearance I am 1. And what I 8 meter sailing boat work would be bloody ugly and sail like a pig. Ugliness and slow speed do not frighten me 8 meter sailing boat work unsafe does.
I again surfed the internet and looked at 8 meter offerings. The smallest boat I could find with a 2m Bimini was the Maine Cat 30 9 meters. The only unstayed mast I could find Boat Sailing Workshop 3d was on a Radical Bay and it was a bi-plane.
My question to you 8 meter sailing boat work dogs and design gurus is � Am I right in drawing metee the conclusion that the architect is right. The sort of boat I want � see JPG attached � can not be done at 8 meters and below kgs weight. Similarly the simple rig on a Hobie Bravo does not scale to achieve say 25m2 of sail area.
Interestingly I read a review of the Moxie 37 which said the trend was towards day boats which in fact was what most cats were used for by private owners. The Moxie is beautiful to look at � I am not qualified to talk about value or performance but I wonder does a boat have to be 37 feet long to provide the same amenity � if you have no 8 meter sailing boat work for bunks for five people and a galley.
Re inventing the wheel is not a good idea particularly when I have not the skill to do it. I have scoured the web and there seems to be many 8 meter cats that cram in accommodation and others that are purely for sailors like the Radical Bay � Is there anything already designed as a day sailor that gives plenty of standing room under shade.
PS What I have looked at Radical BayMaine Cat 30, Aventura 28, of these the Aventura 28 comes closest but I simply don't want all the stuff in the hulls and would like more shade. Richard WoodsSep 20, James Wharram is building a new 27 footer 8.
It has removable cuddy cabins. Construction 8 meter sailing boat work will not available untill after the prototype is finished, however study plans are available. If you decide you need a larger boat, perhaps the Amatasi plans will be done by.
8 meter sailing boat workSep 20, Unstayed aint simple I will look out for contradictions from Rob Denney but I don't get why anyone would want unstayed on a cat. It isn't simple - the engineering and the construction is very hard.
The Hobie is a bad place to start from in an engineering sense. Loads go up by the cube as you increase length so there are things you can have on a small boat that can't be easily done on a big one. Unstayed cat masts are one example. Of course it could be done - you will just have to throw lots and jeter of time and money at it.
Therefore it is not simple. If all you want is a daysailer with cover then go a two stage bimini. The front stage would be low over the seated area and then a two metre high section where you walk. A bimini is pretty low windage as long as you don't start covering it in. My advice - go two or three stays a side on a simple tube. The closest thing to what you want in my reckoning is the Constant camber cat meteg by Jim Brown John Marples. These guys have really been around 8 meter sailing boat work know what works.
Thank you catsketcher Dear Catsketcher Thank you for taking the time to metdr. I am not an architect or an engineer, for my sins I 8 meter sailing boat work time at University studying Maths so the cubic expansion in metef to both loads and mass is not completely alien to me. I am therefore not surprised when on the mmeter in front of the hotel I see unstayed masts. What I don't know and don't understand is where this approach stops being vailid.
Is it really engineering complexity or rather that the mass manufacture of Aluminium tube of varying wall thicknesses and diameters is so prevalent and competitive that the manual process of constructing a tapering carbon tube is cost prohibitive.
What may be very difficult mrter the manufacturing process to achieve that deflection - I simply don't know. I am in essence just puzzled that you can't have "a tube to pop in a hole" instead of a complex load distribution system via stays with equally complex system of ropes as opposed to the system on a Hobie Bravo.
A Hobie bravo weighs 90Kgs, a wind surfer weighs less, clearly an unstayed mast "works" at these low weights. I know what a good engineer wil say Almost the entire training of a good engineer is towards optimizing known art both in terms of effiency in outcome and use of materials. A good designer working towards a market as opposed towards efficiency xailing say.
If I can use a plain tube no taper with non optimal deflection but strong enough not to break then it may sail like a pig but cost so much less, be so much easier to handle that the sort of idiot that can manage a Hobie Bravo Me!
This brings me back to my query is there point where an unstayed single mast lets forget bi-planes for this email becomes too hard. Perhaps real sailors are so enthusiastic about performance that no one is interested in the kind of simplicity that appeals mter me 8 meter sailing boat work performance losses would be so huge without a complex custom engineering study and labour intensive manufacturing to produce for example the required 8 meter sailing boat work of flex.
On the other hand it may be that materials advances in carbon fibre allow a simplistic, "it won't break" approach up to say 5 meters in height but not therafter. I don't know the answers to these questions and net surfing has not helped me. Again thanks for your owrk, this is an extarordinarily interesting forum with some very knowledgeable and enthusiastic posters.
Best Guy. Cats have no bury There have been a few unstayed mast cats. They usually used the 8 meter sailing boat work idea. They needed big cabins to provide enough meat in the middle of the crossbeam. Dick Newick did one of the first ones in the late 80s and the boat didn't work.
An aerorig cat I saw had a whole extra rig made for it. It was the only secondhand large cat I ever saw that came with two meteg rigs. I think you are going about the whole thing the wrong way. Instead 8 meter sailing boat work saying "I want easy to sail so it has to be unstayed" you would be better off saying "I want the easiest 8 meter sailing boat work to sail on a 30ft cat.
Wires are great - you can hold onto them, you can put jibs up on them, 8 meter sailing boat work allow the rig to be lighter and much less stressed. If you want a cat and the prime reason for it is to go unstayed then fine but it will sailinf you more and you will do a heap of experimenting to get it right. As most cat designers are builders with no formal qualifications and there is no money in research except for the super racers you 8 meter sailing boat work find keter free data on unstayed rigs.
The only cat I ever was worried about structurally was designed by a young qualified 8 meter sailing boat work who had never built a cat You could pay Eric Sponberg and he will be able to design you a mast.
But it will cost. My vote - wishbone boom 3 or two stay a side rig. Easy to make and sail. Reply to Cat 8 meter sailing boat work Thanks for your comments, I suspect you are 8 meter sailing boat work and that the superficial appeal of unstayed sailin may well be founded in my ignorance boah much as it is a wish to have "just one rope to pull on" as per a Hobie Bravo. I also note you implicitly indicate that perhaps the lack of unstayed implementation is influenced by cat research economics.
Unsurprising this is, as it equates to asking Kodak circa to develop digital photography. I am grateful to those like who reply for, I am not foolish enough to think that those who have sailed a great deal are either merely traditionalists or wrong. It is very silly to dismiss something that works for what appears a better idea without being very cautious.
Phil Bolger designed an offset rigged cat but I can't remember if it was stayed. The other way is a unstayed mast in each hull for the biplane rig but then it is simpler to have a single stayed mast. The Wharram tacking crab claws are a neat rig with minimal staying.
Reply to Richard Woods. To get the bury without a deck cabin you would need to go deep with a bboat pod.
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