A method of launching an elongate subsea structure such as a pipeline bundle unit into water provides buoyant support to the structure by displacing water with a hollow buoyancy unit that applies buoyant upthrust to the structure. By lowering the buoyancy unit in the water to bring a permanently open aperture of the buoyancy unit beneath a surface level of the water, the buoyancy unit is flooded with water through the or each permanently open aperture to reduce the buoyant upthrust applied to the structure. A corresponding elongate subsea structure is also claimed.
LAUNCHING ELONGATE SUBSEA STRUCTURES
STAPELLAUF VON LÄNGLICHEN UNTERWASSERSTRUKTUREN
LANCEMENT DE STRUCTURES SOUS-MARINES ALLONGÉES
2023-08-09
Patent
Electronic Resource
English