A carrier system (1) for fastening at least one testing device and / or cleaning device and / or repair device to a support structure below and / or above a water surface of a body comprises a carriage carrier chain (5) which can be arranged circumferentially around the support structure and a plurality of interconnected Chain elements (3), and- several around the support structure circumferentially arranged and at least on a part of the chain elements (3) fixed winches (11). At least a portion of the chain elements (3) are formed with such flooding and lenzbaren cavities (9) , so that the slide carrier chain (5) has positive buoyancy in water-bound cavities (9) in water, and negative buoyancy in flooded cavities (9). The invention further relates to a method for attaching such a carrier system to a support structure.
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