We are working on a seastead design.
This is NOT a normal boat hull shape.
It is a tensegrity semi-submersible with legs that can move
relative to the body.

Above the water there will be "body" or living area.  This is
60 feet long, 14 feet wide, and 8 feet high.  

There are two columns/floats/legs coming from the point on the front and also 2 from the point
on the back.  These legs are 4 foot in diameter and 35 feet long.
They go out and down so viewed from the 
front the 2 legs are seen as going towards the side at 45 degrees but viewed from the side they are
also seen to be going down and away from the  body at 45 degrees.
The font two legs have a cable connecting the points at the ends under the water to make an isosceles triangle.
The back 2 legs have the same kind of connection making a second triangle.


Then from the bottom of each leg is a cable to the center underside of the bottom of the body at the other.
These 4 cables hold the 2 triangles from moving outward even though the weight of the body is pushing down
on them and the triangles are angled at 45.

All 4 legs are about 60% under water.


We want to use Froude scaling to make a scale model.
Please figure out the scale ratio so I can use some 5 inch diameter cylinders I have to make 
a scale model of the legs.  Then figure all the dimentions and weights.  Use inches and lbs.

If I use 2 plastic barrels of 55 gallons each connected together to make a long cylinder "body" in the 
model what dimensions would that represent in the full scale?