Non-self-propelled floatable structure provided with a stabilizing skirt

A non-self-propelled, floatable structure for supporting a load, comprising:

• a floatable body, configured to float on water, said body comprising a top surface for supporting a load, and a bottom surface fix facing the water;
• a retention skirt, protruding downwards from a peripheral edge of said floatable body, an internal space being delimited between said retention skirt and said bottom surface, wherein said retention skirt is airtight for air passing in an inward direction, said inward direction corresponding to air passing through the skirt and towards said internal space;
• at least one one-way air valve mechanism allowing air to exit the internal space and preventing air from entering the internal space in the event that the structure is placed on water and the internal space is enclosed between the bottom surface, the retention skirt, and the water.

A non-self-propelled, floatable re for supporting persons, animal or cargo, comprising:

• a floatable body, configured to float on water, said body comprising a downward facing side for facing the water;
• a retention skirt, protruding from said downward facing side of said body and configured to be arranged inside the water when the floatable structure is placed in the water, said retention skirt encircling an internal space, said internal space being delimited between said retention skirt and said downward facing side, wherein said retention skirt is airtight for air passing in an inward direction, said inward direction corresponding to air passing through the skirt and towards said internal space;
• at least one one-way air valve mechanism allowing air to exit the internal space and preventing air from entering the internal space in the event that the structure is placed in the water and the internal space is enclosed between the bottom surface, the retention skirt, and the water.