Concrete submarine

class handling

Sorry you are on the wrong planet in the wrong universe ... i am not building a classed container ship - according to class rules - i am building a private boat...

 

probably - i am out for now -

Cheers,
Wil

concretesubmarine.com

current status 200 ton hull



prototype

 

Oh no, you have been out with your first idiotic statements!

 

Thanks for the pictures liar! They show very clear that you not only have no idea about hydrodynamics, you are not even able to produce a curved shape in concrete!
They show on top of that a German (or Austrian?) dive boat tested in a German or Austrian lake. What have YOU to do with this boat (apart from stealing the pictures)?


A statement from Mr Wellmers website:

He even invented the free of marine growth boat! Hmm, not completely free, as another statement tells us:

Hey old salts, here we can learn a lot about keeping our hulls clean!

 

professional ? with no responsibility whatsoever

 

Can't be better said!

 

No no, you´re dead right! He might not be held responsible for some statements on his website, that is true. But a product liability cannot be circumnavigated, not even when a customer would sign such contract!!!

Of course Colombia is not part of the civilized world (at least not in terms of jurisdiction), but if one is mad enough to buy a concrete toilet from a layman in Colombia, he must not be surprised when the flush will function only once, the final flush................

But stay patient, as he claims to test his vessel we can be sure that solves the problems. (All in one go of course)
You know the old gunsmiths had the obligation to make the first shot with a new cast cannon themselves! A good tradition.

Btw. I wasted some 30 minutes to visit the most popular dive boats and private sub´s websites listed in Yahoo and google. They almost all have links to other projects (in fact ALL I found had), so this community seems to be "interlinked" pretty well.

Now guess who is´nt mentioned on a single one of these sites???!!! Exactly! Wal Mart, Whoolworth and Wellmer.


And Wellmer
I wonder how you will get the stylish wheelhouse shown in your pictures above mounted on that black loo?

Regards
Richard

 

I think this is pretty interesting. A friend of mine worked on a similar project, at a yard on the Virgin Islands I believe. The submarines they built there were used for drugs transport...

No idea what the Columbian built onese are used for... But the combination of Columbia and submarine at least raises my eyebrow...

 

You mix that up Herman! Not YOUR eyebrow! The commander on the mil. submarine will raise his eyebrow while lookin through his periscope, before he commands "tube one, fire".
see: http://www.boatdesign.net/forums/boat-design/concrete-submarine-24361-22.html#post307624
But our little honey here believes we watch too much TV (I do´nt even own one). He does´nt know that all industry nations watch their coastlines without a single gap, especially underwater! Try to enter any larger western port, the straits of Gibraltar, the three main channels of the world in a submerged vessel and your knowledge increases instantly, dramatically and for ever. Though you might not tell your grandchildren of it.
In Caribbean waters the drug issue is just the cherry on the cream.
Of course the serious builders of dive boats know about these problems, and have proven procedures to cope with them. But not a single one of them makes such idiotic claims as our cherrychicken does here.

Regards
Richard

 

Well, I once got an enquiry from a company in some other country (central asia) which were building tourist submarines. As an option these could be delivered with radar absorbent coating... I presume that is to watch the sealife more quietly...

 

Ja, that assumption makes sense. For which other reason one would give a low profile vessel a zero profile? Though for other (military) submarines they have the same signature with or without radar echo.

 

Need a new site!

I wish marine designers had a web site to discuss out-of-the-box ideas with other experianced designers and engineers. This site has turned into a "new idea" shoot-down gallery. Too bad so many have the time to explain that doing nothing is safer that diving into any project for the adventure and possiability of advancing the use and appriciation of the undersea domain. But I remain a supporter of yours and hope for the best. As you have found more that a few potiential clients revieals the most obvious "why". Keep up the reports for the majority of us.

David



Cheers,
Wil

concretesubmarine.com

current status 200 ton hull



prototype

[/QUOTE]

 

There is little to be found at fault with the concept of the proposed pressure hull.
A great deal can be found wrong with this presentation by W. Ellmer however.

He has tested this concept to 50 meters and yet is now selling hulls advertised as capable of reaching 1200 meters and having a service envelope of up to 600 meters:

"The most probable destruction depth for the hull i will deliver is 1200m - so operational depth down to 400m-600m under required safety factor 2-3 should be possible after view port refit and extensive tests but i have no hard data on this."
"most probable hull destruction if i had to bet my money on a certain depth it would be at 1200m (if the hull contains no viewports). Having a viewport configuration as you plan it - the hull weakening is about half so i would bet for hull destruction at 600m for the particular hull you plan. .......- as long as your viewports can take it you could push it to 500m test depth - which means 166-250m operation depth for the viewport configuration you plan."
"You could go to 400-600m operation depth if you change viewports by a camara sistem that would not create hull weakening."

His prototype submarine had only been tested to 50 meters and yet he will sell you one with the following specification:

"The boat can dive up to 300m and go on for 2 hours at its maximum speed."

He is not presenting the concept to a peer group of designers for review- he is here advertising these hulls for sale to the public.
Advertising here and elsewhere which includes capabilities which are totally unproven. If noticing and declaring this discrepancy is thought of as an unfair attack- so be it, we are entitled to our opinions.

 

Bntii, I have nearly no doubt about the concrete toilets ability to stand that test!

UP to 600 or even 1.200 meter (a gentle sloped hill, and on a truck) the structure might survive, though it is pretty crappy done!

But DOWN 600 meter? In the ocean? Only once, be sure!

Regards
Richard

btw where are the tests shown on Mr Ellmers site?

 

QUOTE
"Need a new site!
I wish marine designers had a web site to discuss out-of-the-box ideas with other experianced designers and engineers. This site has turned into a "new idea" shoot-down gallery. Too bad so many have the time to explain that doing nothing is safer that diving into any project for the adventure and possiability of advancing the use and appriciation of the undersea domain. But I remain a supporter of yours and hope for the best. As you have found more that a few potiential clients revieals the most obvious "why". Keep up the reports for the majority of us.

David"

David, I couldn't agree more with you but some take real pleasure in

trash talking others. It makes them feel good for some sick, perverse

reason. I feel sorry for them actually. I too struggle through the crap in

hopes that little snippets of intelligence will sift through. It's really a sad

reflection on the marine industry isn't it? Just watch them attack and feed

on this post...

Tom