User:Vincecate/Tension circle marina

Description

The idea is to use a tension circle to make a marina. This could be with boats backing up to the inside wall and attaching. Maybe we need a custom built boat for this. Or we could have slips inside that boats attached to like a normal marina. These would have to be really strong slips though.

Detail

• Material issues - concrete, foam inside wall. Since it does not go far below the water foam and concrete should be ok. With foam cracks in the concrete will not be fatal.
• Tension members could be plastic rope or steel cable

Requirements Analysis

• Safety
  • It is very wide compared to boats and so should be very stable
  • Wall is filled with foam so essentially unsinkable
  • No active ballast controls so no chance of that going wrong
  • Not clear how we make boats inside safe during hurricanes

• Comfort
  • Should have a gentle motion on normal days but significant response to large waves.

• Cost
  • Depends on size.

• Pretty
  • Looks nice.

• Modular
  • May be able to scale by adding wall sections. Can make multiple marinas. Different boats can come and go. In really large marinas wall sections could be living space and they might also come and go.

• Cargo
  • Very easy for a boat to come into the marina and transfer cargo to other boats.

• Free Floating
  • Yes

• Scalable
  • Scales up but not clear what the minimum reasonable size is.

• Standards

• Mobile
  • If the tension members are removed from wall it can go through the water like a snake so moving can be very economical.

• Draft
  • Very shallow draft.

Videos of 9-foot model tests

<youtube v="oLKEpt2wAS0" /> Initial launch.

<youtube v="Qc8ok78phok" /> Small boat inside and out.

<youtube v="HxUszZyNgXs" /> Real boat in background.

<youtube v="JHWFS2fcX9E" /> In transport mode.