Polish company FlySpot, which specialises in "indoor skydiving", is planning to open a pool for divers in the outskirts of Warsaw this autumn.
The DeepSpot project will stretch down 45m – about as far as a 15-storey building – making it 5m deeper than Y-40 Deep Joy, the present record holder. This project, which opened in Montegrotto Terme in northern Italy in 2016, is the present holder of the Guinness World Record.
The pool will contain 8,000 cubic metres of water, the equivalent of 25 Olympic swimming pools, and will be the centrepiece of a hotel and conference centre. It will be open to the general public, but the main market will be serious divers.
Bartek Wiecek, FlySpot’s marketing manager, told Xinhua: "Engineers will appreciate the scale of the challenge associated with the construction of such a pool. It’s a piece of extreme engineering."
One of the retaining walls will have to resist the gravitational force of 180,000 tonnes of soil, he said.
The company also runs a wind tunnel where people can simulate parachute jumping while remaining fairly close to the ground.
Image: The Deep Joy pool in Italy (Boaretto Group Hotel & Resort)