catamaran

Hello to everyone! I am currently studying Naval Architecture, last year and I am working for my thesis. The project is called " Preliminary design of a multi hull passenger ferry". Currently, I am facing some problems using Maxsurf for resistance prediction. The slender body mesh is not...

I want to modify the wave breaker under my bridge deck that would require eliminating 4 escape hatches. the boat was built in France in 1996 to what I think is a commercial standard similar to uscg inspection over 12 passengers. It is now US registered so can I operate private and be insured...

I am giving away "Stella del mare", amateur build 1984. It's a beloved Pahi 31 - or rather it's plans (scan and copies are left) and French highsea papers "Acte de Francisation" You can entrust the boat to anyone, without a licence, don't need a state inspection and still have European boat...

I might check out a 38' Buddy Ebsen Polycon cat in Florida. My intention is to do mostly solo extended cruising with an occasional crew or two along the way. I have two concerns about this design: - CAPSIZE: This 38'er has a beam of only 17' with a 45' tall mast. - PITCH POLING: The hulls...

I have looked everywhere online and can not find the beam of a 37' Crowther Spindrift catamaran. Anyone know? Thanks!

Multihulls HD propulsion motors by Rasco

Hi all I have been offered a 40'hull, deck and insert unbonded for a give away price. However I know myself and if it takes me 5 years to get her out sailing I will give up long before that (I know it's a character flaw). My question is what would I need to complete to get her into the bay...

Following the kind interest of few users, I have developed a full version of Gene-Hull dedicated to the Catamaran configuration. Here attached is the spreadsheet application (ods. file that can be opened with either Open office or Libre office), the User guide and one example. By hoping this...

We intend to do several trips downriver in a sail catamaran with masts lowered. Think Mississippi, Tombigbee, and Danube rivers. Without some speed difference between the flow of water and the boat, the rudders won’t produce much in the way of lift, just drag. I know the answer is “it depends”...

So we have currently a monohull, but we need more space and also like the idea of going into shallow waters and less movement. Hence we think its time to switch to a catamaran. But a catmaran comes with some catches. We have two demands and that it needs to fit inside a shipping a container and...

Among the various ~12m catamarans on the market, I have found a favorite in the Fountaine Pajot Lavezzi 40. The things I like about it most of all are the relatively low displacement (quoted 6000-6200kg), the high clean bridgedeck, and the "right sized" accommodations inside for a family of 4...

Wanted passenger boat molds, catamaran. for 30 persons +

My thoughts tend towards shallow draft sail cats intended for liveaboard at shallow anchorages. I’ve always thought of low draft as a safety feature, more likely to ride over or avoid submerged objects. A naval architect (name escapes me at the moment) on YouTube was talking about the risks of...

I use BV classification society for scantling structural of an aluminium high-speed vessel, and I got a problem with checking the criteria of the resistant weld section Aw (connecting the ordinary stiffeners to the web of primary members. Aw is easy to calculate by a formulate in the Rule...

Anyone have any information about a Simpson 8.3m sailing Catamaran . I have just purchased one, it needs two fixed keels repaired or daggerboards fitted and other minor repairs. Any info about this design would be great, I can't find a single thing on the web apart from boatcraft plans. Thanks

I've been watching videos on catamarans. What about a catamaran built in three pieces that could be taken apart for transport over land to be stored etc. A smaller catamaran with a bolt on cockpit section could be taken apart and placed on a much smaller trailer for transport. Given the price of...

Hi I just signed into your world of boating geek designers and I have been around boating all my life and have owned all different types of boats and our love is pontoons for there roominess and stability and we also have full enclosures to stay aboard since there are no greater million dollar...

My plan is to design a new wingsail rig for this catamaran, for personal use. Does anyone have a CAD model of this boat to kick start the process.

Looking for molds and/or hulls - Any ideas?