submarine yacht hull building cost

The building cost of a submarine yacht hull as suggested at ( www.concretesubmarine.com ) is about 1/3 of the cost a similar sized hull for a surface yacht would be.

The figure becomes more impressive when you look at the wall thickness. The wall thickness for a surface yacht of the size of our prototype (9 x 2,5m ) would be a few millimeters.

Creating a hull of 18cm wall thickness as our prototype had would be almost impossible as the only way to create thick walled curved forms in steel is hammering a red hot steel block at prohibitive cost. (See the making of TRIESTE).

In concrete you can do such forms in your garage.