Patent ID: 6926467

Claim:
A method for replacing equipment on an installation ( 10 ) located on the seabed with a device ( 20 ) which has approximately neutral buoyancy in water and has storage spaces for equipment together with winches assigned to each storage space, the method comprising the steps wherein new equipment ( 18 ) is placed on one storage space ( 25 b ) while a second storage space ( 25 a ) is empty, the whole device is lowered to the seabed, the lowering procedure is stopped at a distance above the seabed, whereupon one winch device ( 22 a ) first pulls up old equipment ( 28 ) from the subsea installation and parks it on the vacant storage space ( 25 a ), whereupon a second winch device ( 22 b ) lowers the new equipment ( 18 ) for positioning on the subsea installation.