Joining longitudinals to the frames

Kaj,
I think you might enjoy joining the Metal Boat Society. I am sure you will not have to fend off personal attacks there. You can register for free and scout out their online forum for free for a month, but you cannot post to the forum until you join. Several of the members are designers and do freely share their expertise on the site. Others are builders with a lot of experience who do likewise. Just type in metal boat society on the search feature of this forum and you will find a post where they are having a design competition for (GASP!) ......... amatuers. But the competition is for boats from 7 to 20 feet length. There will of course be a link to their website there too.
They have many international members.
I predict that you will be delighted with it.

 

Thank you Gilbert,
I´m on my way

I didn´t know that it was possible for me to join.

Thanks
Kaj Westergard

 

Kaj, much as I'd like to take your advice and take your thread to my therapist, unfortunately my therapist does not take fools gladly so he'd be all out with you! Secondly I've never found the need for some half baked idiot telling me how to live! So I don't have a 'theory-pissed' and whilst I might appreciate the offer don't bother 'cos I'm sure I won't

 

Kaj, had a quick look at your plan, I think that its looking very complex for a box with much welding of 1 metre sections, I think the folding of plates is good but maybe investigate longer sections[once I priced getting 6 metre sections folded for a 12m pontoon & extra transport + folds come out cheaper than time & welding + neater Job].Pontoon to tunnel connection looks wrong to me too.Regards from Jeff.

 

I looked over your drawings again. Maybe you are trying to complicate things? If you were to weld two twenty foot containers side by side, slap a plate on the bottom and some on the sides, extend the back and front you couldn't sink the thing with dynamite. Don't worry about >>Joining longitudinals to the frames<< . The containers already have the structure you need and you only need to keep water out of the containers.
Gerald

 

Or as the man said to the Captain of the Titanic - you only need to keep the Ice out of the Hull! Easier said than done!

 

I want to thank you all for participating on this thread.

I have spent several hours reading this forum and also
the metalboat society forum.
Brent Swain of origami-boat fame is a frequent contributor
at metalboat society and seems to be a guy to my liking, although,
I hasten to add, I am a big big fan of junk-rigs and he is not.

If you are going to scorn me for the junk-rig thing please specify which junk-rig you are referring to, as there are more different junk-rigs than all the western rigs put together.

After reading these forums and especially "boatdesign" I often find one regrettable "sympton" in the posters and that is "the old versus the new"

No offence to anybody - but I don´t understand the idea of an amateur building a boat that looks like tens of thousends of similar "off-the shelf" boats.
Surely, if you think about the money involved, it would be wiser to take on an extra job and with the extra money earned pay for a professionally finished boat.

If what I just said makes sense, then, why are there so many postings on this forum that are scornful to amateurs that try to think for themselves ?

Let me tell you a short true story:
I had among my employees an old man (older than me) and a young
boy who always where fighting. This went on for months.
I couldn´t get them to stop and I couldn´t find out why they
couldn´t stand each other.

After a couple of drinks at our christmas party me and the "old guy"
began to talk about this ongoing fight between him and the young
guy, and I asked him "why bother" , "why quarrel with a teenager who doesn´t know better" ?
The old guy said to me, and I quote:
" I have so much to teach but he won´t listen".

Then he continued saying:
" Don´t you want that, what we do gets properly done?"
and I said: yes, I care that our work is properly done but I don´t give a s..t about HOW it is done as long the endresult is the intended and the customers are satisfied.

"I have so much to teach, but they won´t listen."
I think I see a lot of it on this forum.
I know there is said to have been a time,
"when the boats were wood and the men were steel"
but I think that time has long gone. (and so has the need for it)

I know that some of you´ll say that the "sea hasn´t changed" and that´s propably almost true.
(They say that the "freak vawes" are bigger nowadays due to the pollution and the change in temperature)
However with the "plastic-from-the-shelf-sailboats" it is today safer to cross the Atlantic than to drive a car for the same distance on a motorway.

Forgive me for saying this but "crossing the atlantic is not that big deal"
Anybody can do it. (with a little help from old friends on this forum )
Learning to handle their boat by short hops along the coast (some coast, their coast) until it´s time to gather in the Canarys with the "Arc-gang".

Lastly,
A short notice of my building plans:

A couple of days ago I received a temporary buildingpermit for a boathouse (=tarpaulin shed) 16meters x 6 meters x 7,5 meters(height).
It is too snowy and cold for building the tarpaulin-shed so I´ll withdraw
to my "study" and think over my "planless plan" :

Maybe I really am doing things too complicated.
The "pontoon-units" , so convenient for me to
fabricate in the shop, may be an idiotic idea,
I´ll think about it.



Thank you all for your input.
I have learnt something from every posting.

I´ve yet to learn the answer to the original question that started this thread
i.e.the scantlings for "floating frame construction" ,
but I´ll save that one for the metalboat society forum.
(even if I don´t use them, I still want to know.)


Kind regards
Kaj Westergard

Personal message to safewalrus:
I hope you are wrong about your therapist.
However, if you are right:
Please - talk to your mother and have her send you to an other
therapist. In your shoes, I´d try a male therapist this time.
Don´t forget to negotiate for a (quantity)discount

Kind regards
Kaj Westergard

 

Go to www.eagle.org and look at the various "guidelines ..." and "rules ..." available, especially inland river barges. Also, www.uscg.mil/hq/g-m/nvic has "navigation and vessel inspection circulars", some of which may give you useful information. NVIC 11-80 has scantling rules for aluminum boats, for example. You could use them with the allowable stress for steel instead of aluminum and be perfectly happy.

 

Kaj, Whilst I wish you luck with your project and hope you don't drown too many people during it I believe that you should take your 2youngman/oldman story to YOUR Therapist {you are after all the only person who talks incessantly about therapists} and read it slowly - together! He will then be able to suggest YOUR place in the story {and it 'ain't young believe me}

There is a saying in my country "there's one (fool) born every minute" I guess the day you were born was very fortitious for the world as ONLY one fool was born that day!

 

You're in Stockholm? I thought Larson and Eliasson put together quite a good yacht design evening course in stockholm just for dreamers like you?

 

Yeah but being a dreamer he was asleep!