catamaran

Herein, I have brought a few interesting postings on this subject to this new subject thread, as I felt they had been posted so long ago in some very long subject threads that might be skipped over by today's 'instant gratification' crowd. Bob Laesk

Hi I have a DIY project, designing a inflatable catamaran with a trampoline deck held together by an aluminum frame. There are some comercial products like this: HappyCat, MiniCat, SmartKat. However, these seem to be optimized to be "good" sail boats, but take way too much time to set up. I...

Hey everyone, I am a newbie here and have been dreaming up a project that is beyond my VERY limited experience. I inherited two, heavy fiberglass canoes that my father purchased at Costco. To accommodate my family of 7, I linked them to create a makeshift multi-hull boat. (Here's a photo of my...

Hi everyone, I'm currently working on the hydrodynamic design of an asymmetric hard-chine planing catamaran, and I'm hitting a wall regarding the early stage resistance prediction. The operating regime is 1<Fn <1.7. I initially reviewed the work by Ghassemzadehahrami et al. ("Development of a...

Trying to figured out bulkheads for the bolt connection between crossbeams and floats . Floats are rather light foam/CFC . Bolts are M14-M20 . Question is how to spread bolt compression load into relatively light foam hull . Regards

Hey, Regarding the symmetry of the hull in real life powerboats (leisure boat or workboat). What are really the rule of thumbs (if there are any) in the hull design regarding these two kind of shapes when we are above 1 Fn. Offshore racing catamarans pretty much always use this kind of hull...

Has anyone taken pictures of the Patin a Vela or Patín Catalán that you would be willing to see published in Catalyst, the journal of the Amateur Yacht Research Society? A member has written an article about those boats, and wanted to illustrate it with pictures taken from the net, assuming...

Hello everyone. I recently came across an article: "CFD Study of an Innovative Catamaran with Asymmetrical Hulls". In short, the authors of this article hypothesize that it is advisable to install propellers in the space between the hulls of an asymmetric catamaran (flat outside), namely in the...

Wavewalk's new S4 Duo microskiff is a 1376 ultralight skiff (200 lbs) that can be split within seconds into two ultralight 38" wide S4 Microskiffs that can be used independently for boating or paddling. The S4 Microskiff is a twin-hull that weighs 100 lbs, and one person can car-top it when...

Good Day everyone, My name is Tonja Jiran and I'm the surviving daughter of Manfred Jiran. Fred was in the process of building a composite catamaran named "This is it" when he passed October of 2024. I'm here for a few reasons and hoping someone might be able to lead me in the right direction...

Hull and deck mold for Chris White designed Buzzards Bay 34 powercat. Eight vessels produced in the series, 7 from these molds. I think the combination of sea-keeping comfort and fuel efficiency qualities are unmatched in her size. In 2020 we received USCG T-Boat certification for 22+2, which...

Hello all, I hope this thread is well placed here, if not, please let me know better one. I'm currently in the process of define the power requirement for a small catamaran (less than 5 m length), with an electric propulsion. Could someone share with me any information (formulae, estimation...

Hello everyone, I participated in some kind of unmanned marine vehicle competition. I have a team of aerospace engineers. In general, we lack information on ships. I was able to find a few formulas and proceeded to the drawing process. While drawing the hull, I realized something and I can't...

Hello, i am a student of Marine Engineering. Right now i am writing my undergraduate thesis for my final project. But, to do this i need some Catamaran lines plan or technical drawing so i can continue my research. Do any of you have the lines plan that i can use? Thank you

Hello everyone! I'm working on a second iteration USV platform for various academic research projects and am seriously out of my depth when it comes to picking the correct hull shape (I'm primarily a robotics guy and boat design is more of a hobby for me). I was hoping someone who knows their...

We will participate in a competition with our friends to make an unmanned marine vehicle. We are all aerospace engineers, we need to learn the formulas. We will use in ship design, we do not know which formulas to use, how to use them, where to apply them. Can anyone suggest an open source? We...

We're undergraduate students trying to build a USV for data collection, about 1-2 m in length. In terms of material to use for the hull, we've heard HDPE is used in Kayaks and is super durable. On the other hand, stuff like plywood and fiberglass is the convention but would be somewhat harder...

Hello everybody i am quite new to the world of marine engineering. I am currently making a paper for a glass bottom boat with its main mission being for tourism (it's for a competition), hull is going to be catamaran and its length is approximately around 10-13m. Looking for some recommendation...

This is what I need in a boat to be used for global travel: *ease of build - I will build the boat myself, learning as I go, and starting with hardly any tools, and zero boat-building experience. *energy efficiency - it needs to be fast where needed like a catamaran, but also like a hydrofoil...

Hi there. I'm looking to add solar panel area and an owners cabin on the upper deck of the Silent Yachts 120 Explorer, by extending the upper deck. I'm curious about anyone's inital thoughts. Thanks!