How hard would it to be to build a small submarine styled after

Idk so bump for interest

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>>33103589
Submarine design have come up leaps and bounds since then, and truth be told, not many countries that make small littoral SSKs

Still, some countries do make them. Iran makes plenty of them midget subs with anywhere between 30-40m in length and 100-150 ton in weight

>>33103775
I'm aware of that but that wasn't really my question. I'm asking how difficult it would be for a couple of amateurs to make one that doesn't break down/kill everyone aboard.

If it helps, two of us have a lot of experience building boats. I've built boats (both wood and steel) since I was about 15. I'm just wondering if even tiny subs are so complex that it basically means nobody but a professional shipyard should attempt them or not.

>>33103824
impossible

>>33103589
not too difficult if you have a rough idea of what you are doing

https://www.youtube.com/watch?v=Oysz1S4do-g

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>>33103589
Hey I'm actually building a CAD model of a Typ VII c. I'm a welder fabricator too. I think if you had a good sized facility that could handle stuff like large pressure vessels you'd be able to make part of it.

>>33103824
That depends on how deep your pocket are

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>>33103843

>>33103589
you haven't really thought this out much have you? 60ft at most? 100ft or so? It's definitely not as simple as a big tube with ballast.

>>33103841
That's really cool, thanks for that link
>>33103866
Probably about $150,000-$200,000 from me alone. Other guys would probably chip in $50,000 a piece (I would be the skipper).
>>33103889
I never said I thought it out much, it was just an idea. And yes, 60ft at most. I'm aware there are plenty of ballast tanks, air compressors, etc that are needed but at the end of the day that's essentially all a submarine is. A pressure tube with ballast systems and planes for controlling its depth.

>>33103843
>>33103843
I have a big workshop that I build my wooden boats in and stuff. Largest boat I've ever built in it was 60ft but that was pushing it. It's also a woodworking shop, so definitely no welding in it (lots of flammable stuff).

I have an outdoor yard area that I use for finishing spars and masts for sailboats. I wonder if it could be done out there. I'm actually quite proud of my setup. I have my own "boatyard" and even a small harbor (got permission from the state to build a permanent pier). A submarine would be a very cool addition to my growing "fleet"

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>>33103945
I'm quite jealous of that, anon. If you ever build a VII don't forget the deck gun.

Are Americans able to own torpedos?

An old man on youtube built a pretty big ship from scratch in his backyard and was working on a small submarine.
It shouldnt be too hard if you have the correct knowledge.

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>>33103988
I think so. We can own tanks so why not torpedoes?

>>33104083
because they go boom big time and sink ships

>>33104167
Military jets can do the same thing and I can still own them, just make some yourself and don't tell nobody.

>>33104207

Military jets don't do that, missiles do that. You can't own an AShM.

>>33103920
The biggest influence on the cost and complexity of your submarine would be its maximum operating depth. Higher pressure means tighter tolerances, thicker metal, more expensive gaskets and more powerful compressors.

I think that 40 m maximum operating depth would be a good limit. The pressure is low enough that you can use a wide range of consumer-grade products in the submarine. 40 m is also a fairly survivable depth in the event of an accident (Although there are multiple examples of entire submarine crews dying in as little as 20m of water).

>>33103843
i have 5 years of welding on pressure vessels (smaw,mig,tig) with most welds being x rayed and ut tested if your near me ill com help out in my spare time

>>33103988
I mean in theory, yeah. You'd just have to pay the $200 NFA tax. As to whether there are any operational surplus torpedoes being sold, that's another question entirely. And I don't believe you can manufacture explosives without a permit from the ATF. Good luck on that happening if you tell them it's for a torpedo

>>33104249
Yes you can. It's just a destructive device. Nobody will sell you one but you *can* own one.

>>33103589
i'd prolly start with a 1-man cheap thing just so u cannlearn to waterproof

>>33104717
I don't want to invest the money or time into making something that'll essentially be a throwaway. I'm fairly certain I can figure out waterproofing. It's not like we're going to drop the thing in the ocean first thing without first rigorously testing every single system on it to make sure it works. And even then, countless sea trials would be done in relatively shallow water before we even consider taking it to the open ocean.

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>>33104480
>P-please don't shoot my sea doggo, Mr. ATF man

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>>33104752
god damn seals are so fuckin kawaii

there has to be some type of schematics or blueprints available for some type of sub if even just a u boat. with the money you can come up with cant you buy a used one?

>>33104799
>cant you buy a used one?

A used what, U-Boat? Yeah lemme head down to the Chicago Museum of Science and Industry and write them a big fat check of $8 million for that U-boat they've got sitting there.

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>>33104796
They are smug little motherfuckers

>>33104834
https://www.youtube.com/watch?v=eY52Zsg-KVI&t=35s

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>>33104799
You definitely can't buy a type VII, I'm pretty sure they won't sell the last one in existence.

>>33104844
quality post

would listen to the end /10

>>33104844
>>33104834
>>33104796
>>33104752
OP better build a sea doggo perch on his U-boat. You will sink many British merchantmen with their help

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>>33104896
>A sea doggo against brits
something like this?

>>33103589
>https://www.youtube.com/watch?v=8kiHTFACCGM
This guy has made two working ones on his own hours,used to work something IT related now is retired and building chinese junk boat in his back yard.
If you have the will there is a way.

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/pol/ sure could use on of these subs; is a deck gun optional? Pic unrelated.

>>33103824
>I'm asking how difficult it would be for a couple of amateurs to make one that doesn't break down/kill everyone aboard.
Look up the history of the earlist classes of submarines. Look up their accident rates. Those were designed and built by specialists in shipyards, with extensive testing and applied engineering knowledge. And they were still horribly unsafe. Even WWI subs, which were mass-produced, didn't have a stellar safety record.
So 'two guys who build boats' building a sub is a recipe for disaster. Get an engineering degree before considering such madness again.

>>33105238
This is a completely unfair comparison. First of all, WWI and earlier subs were built using incredibly shitty materials by today's standards. Iron rather than steel alloys, parts that easily corroded, etc. Furthermore, technology was no where near as advanced. I can walk into a hardware store today and walk out with an air compressor that puts one used aboard a WWI submarine to shame. Most of the accidents were caused by shit like:
1) Unreliable machinery (again, not a problem today if you buy good quality equipment)
2) Riveted construction (welding was in its infancy and not very good)
3) Shitty gaskets (see point 1)
4) Lack of understanding of the best way to do things (many initial fires were caused by the simply fact that early subs often used gasoline rather than diesel, much more unstable)

Not to mention shit like electronics is highly advanced today. We have batteries that are much more powerful, safe, and produce less heat than those of the First World War. We have stronger pipes made from copper and steel rather than soft, weak lead.

As shown in this post:
>>33103841

It is not only possible to build a submarine on your own, you can build a pretty kickass one if you take your time and test things properly. And have the funds for good equipment.

A submarine is just a steel tube with ballast tanks that can be opened or closed and have compressed air blasted into them to dump the water, an engine powering an alternator for the prop, and if you insist, a periscope. They're really not all that complicated and if you have enough knowledge of waterproofing shit, engine work, wiring, etc., it can be done.

>>33103589
If any of ya'll happen to live in college park MD, let me know so I can get you to scan stuff off.

>>33105238
>>33103824
>>33103775
>>33103589
Look up some of the subs that cartels made to smuggle drugs into florida.

They're pretty amazing tbqh

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>>33103589
my school uses an engine from a u boat for teaching

>>33106129
What school? That's pretty based. Think if that thing could talk, it makes me happy to know that at least one of those MAN diesels is still putting 80 years later.

I suggest studying research submersible designs for info, and finding out what best steel for the hull would be.

The hardest most time consuming part is welding but you can study

https://en.wikipedia.org/wiki/SUBSAFE

standards and documents. As serious welders you are used to passing bend tests and x-ray inspections.

You could also build contacts in the unclassified submarine fabrication community. For such an ambitious project you could post a blog and make sure fabricators and ex-submariners know about the project and that your interest is in producing an absolutely professional result.

Fuck nostalgia. Study everything you can about new tech. You won't need stealth so no rubber coating required.

There's nothing stopping you from involving professional submarine engineers if you interest them in the project. Explore boatbuilding forums to ask about contacting them, and learn who produces small subs currently.

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>>33106207
>You won't need stealth
Or maybe I will :^)

>>33106336
Also, does anyone have the smug pepe version of that picture? I've seen it somewhere but I wasn't able to save it. It had a smug pepe wearing Royal Navy dress blues with the Belgrano sinking in the background

>>33106129
Gimme the address. I need propulsion for my sub.

>>33106336
>Or maybe I will :^)

If you had the money to play in those leagues you wouldn't be on 4chan. You'd be rich enough to order VX assassinations and get away with them.

>>33105238
He can still do it, a lot of things have changed in metal fabricating and metallurgy since then.

>>33103824
stfu you 16 y/o faggot. Experience from helping your dad build a barn and a shit boat will not help you building a fucking submarine. You are either not allowed to own guns b/c your some middle school faggot. An aspie, which I suspect is the case. Or you are a troll.

No you fucking child, you won't be able to build a submarine no problem bro. The fact you come to 4chan to ask about proves this point. Your either too young and naive or a full blown autist that hand your dad the wrench(i'm a carpenter now!)

>>33103589
Your OP pic is not of a Type VII U-Boat, anon. She's the USS Drum.

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>>33107615
I know it was just the first picture of a submarine I had in my folder
>>33107477
Did you read the thread, autist? I'm an experienced welder with about 15 years of boat building experience, both wooden hulled and steel. Everything from steel-hulled work boats to my 50' wooden motoryacht. I have my own workshop and harbor at my house. Read the thread before you sperg out like a dipshit.

>>33107675
15 years on the job and you decide to ask 4chan for advice on building a mother fucking submarine with some buds...

Or you are some 16 y/o kid pretending like he has experience to pull some argument from authority. The fact that I have to tell you that this is an expensive and complex that without experience is a bit difficult and dangerous to complete shows us all what you really are.

some 16 y/o autist with grandiose fantasies.

>is it really just as simple as making a big reinforced steel tube with some ballast tanks and slapping some diesel engines and batteries in it

Yeah dawg. A weekender.

>>33107860
Christ you're autistic. I'm just shooting an idea out. Cause yeah, welding trawler hulls and building wooden sloops and cutters is definitely comparable at all to building a pressure hull designed to dive to depths of several dozen meters and run off of battery power. Faggot.

All I was asking was if there was some aspect of them that is really dangerous or complicated and thus is the reason you don't see many amateurs building them. But as other anons in the thread have shown, they do, and some of them are pretty fuckin nice. Go shitpost somewhere else.
>>33107990
Where did I imply that simple meant easy? It's very simple to climb a mountain, too. You just go up. Doesn't mean it's easy or is quick.

>>33108037
Where did I imply that quick meant easy?

>>33103589
>trunk surfaced with ballast tank, pump, electric motor, battery, diesel engine detached from truck with electricity generator

Not hard

Designing Air Independent Propulsion system is real deal.

>>33108037
you're right. I'm the autist here, not you.

Good luck building your WW2 era German U Boat. I bet you will make a good one and impress all the girls or w/e you're trying to do with this laughable project.

tomorrows thread:
>guys i'm a rocket enthusiast. I have launches hundreds of model rockets. Some even go like 100 ft. How hard would it be to put my pet mouse on the moon? Its 2017 and that old ass tech is so long ago I should be able to build it with a couple buds. They are welders and so am I. I welded a piece of metal in tech class once. I'm an expert and know what i'm doing, please tell he how to build a rocket to go to the moon. You are autistic if you think otherwise...

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>>33108218
You are so fucking mad. You're right, I know nothing about welding. All of those fishing trawlers, launches, and construction boats out on Lake Michigan right now are pieces of shit. That's why they've been floating and working for 8 years.

>>33108296
>You are so fucking mad
that projection. DESU i'm actually laughing and suspect that your replies are some pathetic attempt to bump your shitty thread.

Let me tell you something your beta father never told you. You are a fucking retard and will never accomplish anything, let alone build a ww2 era submarine with some buds that have welding experience.

You don't need to know anything else. Just welding some boats together like some glorified construction worker.

Not only are you fucking too retarded to realize the futility of this project. Its pathetic you would bring it to 4chan.

And guess what you 16 y/o kid.

>>>/diy/

is where you will get some proper help.

not /k

so you are to retarded to even use this website properly. Go post this shit on the board you god damn retard. Everyone here knows you are full of shit. NO ONE with any experience in building so much as a work bench would think its an admirable idea to ask how to build a god damn submarine on /k, 4chan of all places.

lol is this a troll or are you really this far on the spectrum that you can't see how ridiculous your question is?

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>>33108389
>tfw to intelligent to use 4chan properly

I know you're just shitposting but thanks for the bumps, kid

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>>33108389
>>33108218
>>33107860
>>33107477
Christ almighty, did someone shit in your cereal this morning?

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>>33103589
It's been done, a few times on surprisingly low budgets. Google examples. Not easy by any means though, and definitely dangerous as fuck. Beware static pressure, and good luck building a one atmosphere submarine.

That said, death by homebuilt submarine definitely isn't the worst way to go.
>>33107477
>Anything dangerous, intimidating, or unusual should never be attempted
You'd make a great liberal.

>>33109332
post count still hasn't changed OP fuck off

>>33109412
I literally just posted in this thread. I saw it a few minutes ago but I was shitting.

report shit thread for not being weapons related guys.

>>33103589
Your best bet is to buy a huge cilinder made of steel, reinforce it from the inside and outside, then make external cosmetic parts made out of fibreglass and wood so it would look like a WWII submarine.

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>>33109427
To quote the sticky

>Our board centers around weapons, armor, and other myriad military technology

People like you are the reason /k/ is going to shit, go back to /b/

>>33109834
Ignore him. I've seen him spamming this shit in every single thread about tanks, milsurp, torpedoes, etc. He's either baiting or just being a sperglord

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OP, you should definitely do some more research on submarine systems and how they're operated.

For starters, you'll want to know that most subs control their depth by using their planes, with ballast tanks providing only a rough way of keeping neutral buoyancy.

It'd be worth building a small, 2-3 man test sub before starting any kind of larger project - that way you can make something that's ugly, but works, instead of trying to figure out how to make a Nazi boot right off the bat.

Having a way to maintain CO2 and oxygen levels is just as vital as constructing the pressure vessel, especially if your drive/control system fails and you're stuck underwater waiting for rescue. Including a dehumidifier along with the life support is also a must, otherwise you'll have to deal with condensation building up on everything and a generally unpleasant experience.

>>33103824
Did any of your boats sink?

Thats the first step.

Now build one that comes back up and you've got it.

To answer your question. Very difficult. Unless one of you happens to be a marine engineer? Or marine architect?

>>33112541
There actually are some engineers and navy related contractors, etc, that pass by /k/. It's a rare thing though.
But damn, when they get into the technicalities. Finally good to see people that know what they're talking about

>>33105088
>pic unrelated
Mighty Kek

>>33103589
It is illegal to build and operate a submarine in the US without proper licensing and registration. This law was put into place due to the narcotics subs.

>>33103589
Might want to be careful with this because if you go under water in a sub, the Navy might blow you out of the water if they think you're a nation trespassing in their territory.

>>33108037
Honestly OP, I would design your own sub, make something completely original in autocad, math it out, decide how large and at what depth you want it to operate, what speeds you want it to reach. The lower the depth, the slower, heavier, and larger the ship becomes.

I'll give you some specs OP
>submersible below 40-50 meters
>4 month operational time
> 4 man crew
>1000 Mile range
How large must your cargo hold be to accomodate food.
How large must your fuel tanks be.
How much horsepower will be required to get your craft up to cruising speed and remain there for a significant period of time.
What will you use for the power plant?

>>33113351
Well, probably not. They might follow you until you surface so they can make fun of you and actually determine if the president wants them to sink you. They'll likely know by the fact that it's deafening their sonar operators that it's not military.

>>33103589
psubs.org

your welcome

>>33106137
it's actually made by MAK I think
The school is called verkmennta skólinn á akureyri

it was used as a generator from 1950 to 1995 I think

>>33103589
It's dangerous and difficult because if it all goes wrong, you can't just jump out of the thing.

Also every 5 meters of depth is 1 bar of pressure, so if you don't want to pressurize your hull (and you don't), you need to make it very stout.

You need to be able to scrub CO2 because it will poison your blood and trigger your drowning panic reflex.

Your leak proofing needs to be perfect, you need to have a dehumidifying solution, etc.

Start with a 1 man boat with a bailout mechanism in shallow water. Once you've mastered the issues I've listed, work on scaling them up and strentering for greater depth.

Detachable solid weights for emergency ascension are a workable safety features for a atmospheric sub, but a death wish in a pressurized sub.

It'll cost twice or three times what you budget.

The proper solution here would be to get as close to a finished submarine as you can get by buying something pre-made by the professionals, and then just slapping a decorative body kit on top for show, which is the general idea you're pursuing here.

Unfortunately there's not much of a market for that stuff; it's all mini-subs for deep water research and/or ROVs.

I think there was a danish guy who built a couple submarines to take tourists out for trips with. Then he got into building rockets. I'd google his story.

>>33103589
I would recommend building a small test model first.