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The problem if a real desaster strikes is that food, transport, medic, all infrastructure is gone. So if help will not come - moving out of the desaster zone is the only possible way to safety.

Making it out over land with what you can carry on your back is incredibly difficult.

A sub yacht gives you blast, radiation, impact, temperature, protection, equivalent or superior to an underground bunker, AND mobility to move out, after the desaster to find a better place to live. No land bunker can give you that.

It provides a store capacity that exceeds any surface yacht...

When you have a sub you can salvage canned food from container shipwrecks and you have enough storage room on a 18m boat to store a year supply. You can travel worldwide to avoid hungry pirates in comfort and absolute protection...

The boat we built for Ian 18 x 4,6 m can carry about 100 tons of supply (this is the weight of 4 eighteen wheeler trucks) - its concrete walls are 30cm thick reinforced concrete - that is bunker quality protection.

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concretesubmarine.com

I investigated Draupner a bit and it seems like any structure on the ocean should be built to be run over by a wave in the 20m size class every now and then - this seems to bring naval engineering into a delicate situation as not anything floating currently out there is made for a design wave height of 20m or above.

The bulk carrier in this video is simply overwashed by waves.

This expains the great care that classification societies put on mac gregor hatches. Any surface ship will turn into a semisubmersible in certain conditions.

-- Edited by floatingjack on Sunday 6th of November 2011 09:56:47 AM

Hello Shred, welcome to the forum.
As this is the 2012 event thread we need to talk about major waves, possibly bigger than the Draupner wave. A cube structure with a weight hanging below would definitly be moved so much that the weight would collide with the structure and convert into a sort of wrecking ball.

There is no way to leave the structure and board another vessel in close proximity under such conditions - only life boats  that can be dropped, rolled over, overwashed and submerged have a chance to make it.

Your Berg is a nice concept for clustering single family seasteads inside of Breakwater Marina, for spaces protected by natural reefs, where Draupner Waves do not happen.

For the open ocean where they DO happen you need to go Big - so big that a draupner wave of 20 m is still small compared to the structure.

You need to go up in the air - for example a spar concept so high that not even a Draupner wave can reach the living space area.

Or you need to go submerged. The hazardious impact of waves can not reach you below the surface...

-- Edited by admin on Thursday 17th of November 2011 11:08:36 AM

The prepers pocket guide.

Reading List:

Basic Concrete Engineering for Builders with CDROM / Design of Concrete Structures / Strength Design for Reinforced - Concrete Hydraulic Structures Engineering Manual on CD / Design of Offshore Concrete Structures / Construction of Marine and Offshore Structures, Second Edition (Civil Engineering - Advisors) / The Dock Manual: Designing/Building/Maintaining / Theory and Design of Concrete Shells / Thin Shell Concrete Structures / design procedures of reinforced concrete shell structures (JGJT 22-98) / Understanding Structures / Concrete Planet: The Strange and Fascinating Story of the World's Most Common Man-made Material / Concrete Construction Manual (Construction Manuals (englisch)) / Large Wind Turbines: Design and Economics / Dynamics of Offshore Structures / Offshore Technology in Civil Engineering / Design of Offshore Concrete Structures / Concrete in the Marine Environment (Modern Concrete Technology) /

Ship-Shaped Offshore Installations: Design, Building, and Operation / Developments in Offshore Engineering: Wave Phenomena and Offshore Topics / Wave Forces on Offshore Structures / Subsea Engineering Handbook / Nonlinear Waves and Offshore Structures (Advanced Series on Ocean Engineering) (Advanced Series on Ocean Engineering) / The Maritime Engineering Reference Book: A Guide to Ship Design, Construction and Operation / Marine Hydrodynamics / Random Seas and Design of Maritime Structures (Ocean Engineering) (Advanced Series on Ocean Engineering) /

-- Edited by admin on Saturday 17th of March 2012 06:45:25 PM

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