<center>From a different forum topic, now locked. </center>
<blockquote id=“quote”><font size=“1” face=“Verdana, Arial, Helvetica” id=“quote”>quote:<hr height=“1” noshade id=“quote”> this is a very stupid question
a friend has a cat, a hobby cat. it is not to scale. he just carved it out of faom. he likes it. but i kill him with my iom. everybody here says that multihull will be faster than monohul.
could anybody tell me where i could download plans, for a good cat?
and for the stupid question
what is an F48?
Cougar <hr height=“1” noshade id=“quote”></blockquote id=“quote”></font id=“quote”>
Cougar, will try one more time here since the lock-out of the other topic happened just as I was posting, thus the message response was lost.
F-48 —What is it?
The F-48 is a multihull class that can be any boat with two or more hulls?.. Catamaran (2 hulls), Trimaran (3 hulls) Proa (usually one short and one long hull). The class is patterned after the Mini40 Class which has been sailed in Europe and the U.K. since the early 1990’s. Basically only a few rules control this open development class. It is controlled by overall length, overall beam, more than one hull, and limited to a specific sail area. Width cannot exceed 48 inches (1.2 meters), it can be no longer than 48 inches (1.2 meters) and sail area cannot be greater than 1400 square inches (.9 square meters). It is the smallest of the internationally (not ISAF) recognized classes The other class is the 2 Meter Class which also is sailed around the world.
There are two locations that provide for free downloads of plans (actually line drawings - not instructions) and several other places where line drawings can be purchased.
First - there is the site maintained by Alan Hayes in New Zealand - a “Kiwi” website from which line drawings of <font color=“blue”>“GHOST TRAIN” </font id=“blue”>can be obtained.
The other site belongs to Jean Margail in France and his <font color=“blue”>“WATER RESIST” </font id=“blue”>plans are available there.
<font color=“red”>Caution</font id=“red”> — either of these drawings, when printed full scale, use sheets of paper approximately 4 feet x 5 feet in size due to the actual size of these boats.
<font color=“blue”>“GHOST TRAIN” </font id=“blue”>is a U.K. design by Andy McCulloch one of a few well known British designers. It is a well proven design and continues to be pretty competitive around the world. Secondly there is <font color=“blue”>“PULSE” </font id=“blue”>- another U.K. design and former British National Championship boat. Designed by Mike Friend, plans can be purchased through the F-48 Class Owners Association. We also offer a 1 Meter scaled down set of plans that was recently completed by Jack Ronda from Washington and his photo recap is found elsewhere on this forum. It should be noted that <font color=“blue”>“PULSE” </font id=“blue”>has a royalty attached, (payable to the designer of $7.00 per boat built), and I can only furnish plans to US and Canadians. Others must contact Mike direct. Then there is <font color=“blue”>“WATER RESIST” </font id=“blue”>which is the French design of Jean Margail. His plans can be obtained for free or you can pay to have them plotted/copied if you have no access to a wide format printer/copier. Lastly, through Traplett Publications, you can purchase plans for <font color=“blue”>“SNAPDRAGON”</font id=“blue”>, which is a U.K. design by Mike Howell - and which has many boats sailing. In fact Peter Birch (Australia) who posts here has several sailing in their club and probably can provide answers to questions. In addition, there is a kit all the way up to a full sailing version of <font color=“blue”>“NIGHTMARE” </font id=“blue”>(Austrian design by Ernst Zemann) available through Ian Sammis - a builder in Kansas with excellent pricing. Available in a variety of different levels of completion. Another good and well respected builder is Anthony Wright (U.K.) but importing his boat is kind of expensive due to freight. If interested, I would suggest buying his hull, floats and cross beams, and obtaining sails and mast locally. Those are the only two current F-48 multihull builders that I can recommend. I understand (email) from some of Ian’s buyers, his hull kits arrived in just under 2 months from time of order. All are pleased so far with what they got.
Now - If you wish to use your 1 Meter sail and rig, take a look at the MultiONE as it has two levels of configuration. A “Sport” version where less sail area is allowed for stability reasons, and also a bit of lead on the daggerboard can be used to assist during training and learning to sail the boat. The “Open” class MultiONE has a few more rules! Just above this topic, is a link to the MultiONE pages where you can find the rules and further information.
As noted, printed copies of the plans are available through the F-48 MCOA and while they are a bit expensive the costs reflect the costs directly from local Kinkos’ print centers. Otherwise, you will need to have someone with CAD and a plotter do the drawings for you. Since “classified Ads” and sales promotions are frowned upon on the forum, you can email me and I’ll provide you with costs for whichever set of plans you may be interested in. They range in price of around $30.00 (US) - so if you download, remember you need some way to open/view the files and some way to print them. If interested, I can also send you an Adobe PDF format file which compares several of these plans on a single page. Again, just email me.
As far as the Hobie Cat “replica” for lack of a better word - if not to scale, the answer to his speed sailing would be evident. Even if built to some sort of scale, the model needs more lateral resistance which the asymetrical hulls of a typical Hobie 16 cannot provide - just as many monohulls require deeper keels. You know, it’s that scale effect thing?
Victor Products sells a catamaran, but is has too litle lateral resistance too, and so it suffers from performance. Kris Harig who manages the MultiONE site has one and made extensive modifications. You could contact him directly for more information. Finally there is my design for a MultiONE trimaran called <font color=“blue”>“IMPULSE” </font id=“blue”>which is also free. Just a side view of hulls, a set of cross sections for the main hull and the floats, and suggested “starting” location dimensions (still subject to some modification). This is the prototype that I have been working on, so I can’t give any kind of guarantee of performance yet. It is specifically designed for a foam build either as a plug with layup of glass over it and the foam removed, or as a foam core where the hull and floats are solid foam (except for radio area) which would weight just a bit more. I have no problem sharing that one, and it has been a basis for several posts about shaping foam in sections and then gluing up. Just want to be sure you are aware that it still is a prototype! It also can tip over and it can pitchpole. I guess it is important that these disclaimers are made in public so no further critical comments are made by others. Just a reminder to drop Ian Sammis an email and find out about his “kit boats”. Even though there is a cost, it takes a lot of the work out of building three (or two) hulls - especially if he is still making deliveries in a month or two. He even has Graham Bantock sails and rigs that can be supplied if you wish.
Good luck with your considerations and decisions. Would enjoy having another multihull from the Toronto area that would be visible on the water. Amazing at how much actually seeing a multihull does - instead of just talk.
Oh, none of the aforementioned designs will stamp out world hunger, or solve the middle east issues either - just a disclaimer I thought I should add in as well. Never can tell.
Hope this one doesn’t get caught in a topic lock !