Coffer dam and method for shielding an offshore structure from surrounding water by using same

摘要

The coffer dam (20) has at least two wall elements (22a, 22b) pivoted to each other by a hinge, a hollow seal device (40) which can be pressurized in the bed region and pressed against the offshore structure (10), and an adjustable punch which can be fixed between the offshore structure and the interior of the wall elements.