Something new to me.

[Thudpucker]

Pop up shelters, Permanent!

http://www.wimp.com/concretetents/

 

[HappyKamper]

Very cool!

 

[Capt. Bill1]

Yes, very cool?

Might make an interesting boat hull if turned upside down.

 

[jtsmlarson]

Do they make one big enough to park my boat in?? That is so cool!

 

[pdecat]

That is neat.

 

[Sandy]

quote:

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Originally posted by Capt. Bill1

Yes, very cool?

Might make an interesting boat hull if turned upside down.

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I have had 2 acquaintances who long ago constructed 2 pretty large (40-something foot?) heavily-reinforced cement-hull sailboats in their backyards that became quite successful saltwater cruising boats.
So I had the same thought as Capt. Bill1 when I saw the pics. A little design-doctoring with closed ends and substantial added inner support..... ? But still shaped and cured on land before attempting launch, of course.

"SV Portland"?

 

[Thudpucker]

Those Ferro-Cement boat hulls were popular on and off from the 60's onwards.