Poseidon Resorts: How to build an underwater hotel
The Poseidon Resorts are offering dining and overnight stays on a lovely tropical island near Fidji. That wouldn't be too unusual if you would leave out the following fact: The resorts are located on the ground of the islands lagoon in somewhat 20m (60ft) depth.
Visitors are able to spend a great deal of their stay behind large egg-shaped windows enjoying the marine wildlife and colorfullness of the coral reefs. You could say, they spend their vacation on the bottom of the ocean.
The resorts are made of a completely new designed seabottom assembly. This structure combines lessons learned from early undersea observatories with todays new materials and improved technical knowledge. Early designs of sub sea habitats like Coustau's Conshelf and the US made SEALAB have been build for trained staff with a military duty. Poseydon Resorts on the other extreme offer any luxury needed. Moreso, 60% of its surface is covered by acrylic windows letting the light and colors from the outside in.
Each Visitor staying overnight will spend the night in a so called Pod, that looks a bit like a heavy underwater version of a helicopter without blades. A core specification of the Pod.
Width
5.000mm
Length
10.000mm
Height (NI lift shaft)
3.800mm
Weight (NI ballast)
50 Tonnes
Displacement
120 cm
Metacentric Height
-50mm (NI ballast)
In 2006 Hydrosight was asked to help build these windows. The challenge was unique: To make spherical windows of several meters diameter. Casting and forming of the windows had to be completed in a reasonable time. The facilities would need to handle 400 metric tons of acrylic in a relatively short span.
Since the Coup' in Fidji, where the projected holiday island is located, financing has been stoped. After all we hope that we have been valuable for the projects' early calculation and assesment thesis. We would most definately love to see Poseidon Resorts happen on its second go.
Poseidon Resorts: Entire Assembly from Above
The PODs upside are predominantely made of acrylic windows
Restaurant's internal stiffeners Restaurants' windows' FE analysis
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