Underwater work assembly and method for anchoring thereof

Underwater work assembly, in particular for creating a bore in a bed of a water body, having

• a service platform which can be lowered;
• and
• a plurality of supporting feet which are mounted on the service platform for positioning on the bed of the water body;
• said plurality of supporting feet are adjustable and movable in and out relative to the service platform by means of an actuating cylinder;
• wherein
• at least one supporting food is rotationally mounted relative to the service platform,
• a rotary drive assigned to the supporting foot is provided, with which the supporting foot is driven in rotation for screwing into the bed of the water body,
• the supporting foot is configured in tubular form;
• and
• the actuating cylinder is arranged within the supporting foot.

Method for anchoring an underwater work assembly having a service platform in a bed of water body, in which the service platform is lowered into water and placed on the bed of the water body, the method comprising:

• providing a plurality of supporting feet which are mounted so that they can be adjusted on the service platform for positioning on the bed of the water body;
• moving the plurality of supporting feet in and out relative to the service platform by way of an actuating cylinder, with each supporting foot comprising a base element and an adjusting element which is mounted rotationally securely and axially displaceably on the base element;
• and
• rotating at least one supporting foot by a rotary drive into the ground anchoring the service platform in the bed of the water body.