aluminium

Greetings boat design gurus. I have dreamed up the idea for the perfect boat to add to my collection. The problem is, from what I can tell, it does not exist! This of course only means one thing, time to build it…but first, I want to see if anyone on this forum has any knowledge of a design...

Hi everyone, I am in need of complete project for aluminium powerboat. It should include everything needed for fabrication: welding details, craddle design if necessary, details etc. Preferably proven and tested design in the marine environment. Length - 17 to 21ft, preferably closer to the...

Hello! I'm new here. My name is Nicholas Malinovsky, and I would like to share my project with you, which I have been working on for the past two years. It is a 27-foot aluminum cruising trimaran that can be easily transported on a trailer. I designed and built it myself, and it is almost ready...

Hey folks, Welded aluminum boats... I’m after a small skiff in the 15 to 20 ft range and have a few questions: Does anything like this already exist? What’s the closest production or semi-custom option you’ve seen? Who would be a good builder or fab shop for something custom? Here’s what I’m...

Hi All, I work on a ship and have noticed this recently. It is a steel bulwark (left side) that has had an aluminium section bolted into it (right section) after fire damage. Joined with stainless steel fasteners. It appears the steel plate is corroding significantly, is it the fasteners...

So I am thinking about a pontoon/barge to transport building materials like wood and concrete to an island. It won't be used in heavy seas, if it's too windy it won't be used. Distance from shore is 8km, in an archipelago. I'm thinking about a couple pontoons about 500mm in diameter, square...

Greetings to everyone. I am a long time lurker on this forum and have finally decided to take the plunge. I wish to have a go at building a welded aluminium bass boat. For my first boat I would like to build a properly designed boat complete with cnc cut files, jig designs etc. I have...

Hi, Say you have an aluminium hull... and want to weld something to it... a bracket, a bulkhead, whatever. I believe the exact alloy is defined through the grade, 5000 or whatever. How careful should I be in "mixing different grades" regarding corrosion and mechanical soundness in relation to...

I have a 12 meter (42 foot ) dutch steel ketch I am working on (details elsewhere on the site). I have a mast to replace the original sitka spruce mast which was deck stepped (and was setup to pivot / fold down for going through canals I suppose), and I want to replace this with a keel stepped...

Happy New Year all, I built a boat many years ago and after 25 years, I finally took that mast down to check it and do some modifications. The mast has worked very well, but some of the rigging was second hand when I bought it and it seemed a good point to go through things more thoroughly. As...

Hi All, New to this forum, and pleased i have found this vast resource of knowledge. I'll get right to it, I have been a Marine Engineer and Welder now for nearly 20 years, I have now decided to branch out on my own and start building aluminium boats, repairing boats and just general...

I have been pondering a while with the idea of building a small boat of aluminium. I have never build a boat before, and have slight welding and fabricating skills. The idea for now is purely conceptual. My idea was to make a jet boat. It seemed however that jets are quite expensive, so most...

Im starting on an ambitious project to build a large trawler hull. I have the hull in mind, and I want to create the hull using aluminum tube as a frame, wrapped in fiberglass. I want to create a shaped hull surface in a 4ft x 4ft grid pattern of the square tubing in aluminum, and lay fiberglass...

Hi , new to the forum as a member, but very long time lurker here. Previous liveaboard on steel dutch barges in the rivers and canals of mainland Europe. We have owned 4 steel boats and one wood epoxy. Hated the wood epoxy, and love metal boats. We have done long term living and cruising on our...

Hi Im looking to build a quick and cheep sole for my aluminium boat. Im planing to just use untreated wood painted with some linseed oil to give some more years. I have had some corrosion problem with treated wood, can untreated wood and linseed oil have bad effect on aluminium?

1st thank you for welcoming me to this forum! I will try not to ramble too much as I describe my overall plan, and the reasons for the compromises that must be made to enable this idea/proposal to go from pipe dream to possibility. Additionally I realize that my goal and my ideas regarding this...

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...

LOA - 3.80 m Beam - 1.85 m Hull workshop documentation available.

So, Me and a group of friends are doing some research into what exactly it takes to open a shipyard. I have grown up around welding, however I would be lying if I acted like I knew what I was doing around fabrication. So I was wondering if someone could like, list out the machines they belive a...

Hi, I'm planning a boat on request, a small challenge, but I would like to avoid trivial mistakes, but I'm not expert at all. Below are the preliminary plans of the hull, from my point of view it seems to be fine, but I repeat I have no experience, as you can see the bottom is slightly curved...