Insulating cover for a submerged element of a fluid exploitation facility in a body of water, facility and associated method

An insulating cover to cover a submerged element of a fluid exploitation facility in a body of water, comprising:

• a deformable jacket, configured to be placed around a submerged element, the deformable jacket having an internal volume,
• a plurality of insulating elements arranged in the internal volume, the insulating elements being freely movable relative to one another;
• at least one access opening to selectively access the internal volume through the deformable jacket, the at least one access opening being configured to allow the internal volume to be flooded by a liquid during a deployment of the insulating cover towards the submerged element, and to allow suction of the liquid contained in the internal volume during an application of the insulating cover on the submerged element.