Road Trailerable Large Blue Water Cruising Multihull

[Timothy]

Preliminary design . Extended 56' by 28' foil deployed 56' by 36'. Folded for trailer marina slip or campground 28' by 8' 6". Demounted for container shipping 19'6" by 7' 11" by 6'6". Solar assisted direct drive electric auxiliary. Accommodation, two singles two queens. full standing headroom in galley and head when Bimini or full enclosure deployed. Attached is short animation of boat folding.

[Squidly-Diddly]

but more sturdy and versatile, with your choice of bolted on cross beams.

Here is the original thread.....


http://www.boatdesign.net/forums/mul...ble#post368666

[outside the box]

Perhaps this is what you might try researching JFWIW

[Skint For Life]

Zambizi. That's good to hear, compartments like you describe is what I was thinking already including the hard rubber V section for the keel and bow

John Perry. Thanks for this. Fitting all components on the trailer within the restrictions is a big concern for my concepts so that is a major reason inflation is being considered.

Frosty. Thank you for your input, your right "road trailerable large blue water cruising multihull" does seem like an oxymoron. I know what I am proposing is not easy, if it was I would able to find a boat already in production that fits every word of that title. I am hoping people will post up their ideas (as I will) on ways they think it may be possible to make a boat fit the criteria.

Lets not forget that anything is possible, it's not hard to find inspiration, look at the link below. Not long ago this was the realm of comic books alone!!!

http://www.youtube.com/user/jetmanofficial?blend=7&ob=5

Regarding minimalism I believe the farrier boats fit most of the criteria if one were to not want so much space/load carrying ability. I'm looking at the concept from the stand point of trying to achieve maximum boat size, maximum load carrying capacity etc. All within the parameters.

ThomD. Thankyou for your input, it's all very interesting. I hear where you are coming from and I am sure that I am no doubt lacking from experience in this area. If you have any boats that you can think of that fit the criteria please let me know, also if they would fit it with some adaptation.

Timothy. Wow! I was wow'd by this concept when I first saw it a while back. A truly impressive concept. And I thought I was asking alot of a concept! I would love to see your concept built. I have considered a proa design in so far as it would probably be easier to get max living area for a boat that fits that trailer size. I have gone away from the proa design as it is rather foreign to me, I don't fully understand it. To me it seems if a proa got hit with wind on the wrong side it would just fall over. I would prefer a boat that can turn any direction, my understanding of shunting is that it can only be done are particular way?

Squidly-Diddly. Thank you very much for this, how I missed that in my searches I do not know I like the side scallops on the hulls to try and keep the width down but they still have good hull form in the bows and for most if not all of the waterline. The use of the trailer on the boat is really "TRANSFORMERS" I like the concept. It has the advantage over my concept of being able to trailer the boat relatively quickly in a foreign country for repairs or to avoid a hurricane approaching

outside the box. Thanks Can you please give me more info on this boat? I can't quite read the name on the hull.

Thank you to everyone so far for their ideas and experience

[Doug Lord]

Originally Posted by Timothy

Preliminary design . Extended 56' by 28' foil deployed 56' by 36'. Folded for trailer marina slip or campground 28' by 8' 6". Demounted for container shipping 19'6" by 7' 11" by 6'6". Solar assisted direct drive electric auxiliary. Accommodation, two singles two queens. full standing headroom in galley and head when Bimini or full enclosure deployed. Attached is short animation of boat folding.

=======================
Timothy, that is incredible-particulary the animation. Thanks for posting-I hope you get it built.

[Frosty]

As the thread continues as I knew it would, I have to re iterate the danger of minimalist boats. The sea is a dangerous place , calling these boats blue water that no one has yet denied is my concern. Are your testing the strength of boat or that of man.

I consider these boat a death trap and a widow maker. And forgive my bluntness but if you cant afford it keep away.

[Timothy]

Perhaps I should not have posted my idea for a folding trailerable proa on this thread as it is only intended as a coastal cruiser. The idea is that the boat would always be within a day sail of its tow vehicle and that it could also be used as a caravan on land. It would cross oceans in a container along with its tow vehicle and trailer. So in a broad sense it is conceived as a world cruiser that can go where blue water cruisers cannot.

[Skint For Life]

Timothy. Thank you very much for posting it up. I think it is quite relevant and I'm glad that it's in the thread. Thank you for posting up the additional information. That is quite a concept you have there

Frosty. Did you read my last post? I said I'm not looking for a minimal boat to fit the restrictions, but a boat that is as big as possible within the restrictions. I'm failing to see how a boat that would be 12.45 meters (over 40 feet) long minimum is considered minimalistic. Heavenly twins is 27-28 feet and people have cruised the world with their families

Why would you consider a boat that fits within those requirements a death trap? Do you think a 40 foot large volume catamaran with centre pod is a deathtrap in the open ocean? Because that is one of the concepts being entertained to fit the requirements. Or is it just that you think anything inflatable is a death trap?

Just for everybodys interest regardless of the final concept I like the idea of a split rig using wharrams soft wing sails on lower masts to keep the COE and COG down and also to make sail handling easier.

[outside the box]

outside the box. Thanks Can you please give me more info on this boat? I can't quite read the name on the hull.
Sure,
It is Malts mermaid II at Okura beach Japan I believe, I found it after dedicating almost a day to google to see what I could find existed along the lines of what you are intending.
Where are you in Christchurch?? How much of what you are discussing is a dream and how much would/could you put into a direction forward should a solution be presented?? Just to give you an idea in real world terms of the true cost of time and effort to bring what you are discussing to reality based on our project, we have invested thousands of hours "yes thousands,sweat equity and paid" (beyond the time needed to build a boat) and in excess of NZ $30,000 in the design/development/engineering/modelling/prototyping (using High modulus SP Gurit) and a final year Canterbury University engineering student on work placement, just to get the design to prototyping build stage, I would estimate a further at least NZ $125,000 before it would be any where near ready to be loaded into a container to travel the European boat shows with our chosen brokerage, remember the prototype we are talking about with these figures is one boat with a set of 15' hulls and a set of 20' hulls representing half scale of the 30' and 40' boat (as the design can utilise different hulls eg cruising and performance).
We have the half scale prototype of our 40'er, as you mention ocean capable, being built in Christchurch. Once we are happy with it and it has proven it will do what Solid works and Rhino and a 1/10th scale model and competant engineering, have said will work in the virtual/model World we will be sharing the design, a 26'er is being designed presently (see photo attached to give example of scale) as a stepping stone from the prototype 20'er picnic/camper type boat like the Europeans have (see attached pic to give example of 20'er picnic/camper scale) and the full size 30'er and 40'er.
I hope you are able to realise the dream. Remember "If you can dream it you can begin it"
P.S our design studio is in Ferrymead.