Huisman, the specialist in lifting, drilling and subsea solutions welcomed Subsea 7’s Seven Waves at the Huisman Schiedam quayside. The vessel, built by IHC Offshore & Marine in Krimpen aan den IJssel, will be equipped with a 550mt Flex-lay system and a 400mt Offshore Mast Crane.
The 550mt Flex-lay system will be the highest capacity flex-lay system onboard a pipelay vessel and is designed and built for the installation of flexible pipelines in 3000m water depth. The tower is tiltable to allow connection of flexible risers to rigid pipelines which are retrieved from the seabed. The system’s tensioners are retractable to allow for safe and efficient A&R and PLET installation procedures. They have been designed according to the most stringent requirements and are equipped with a Squeeze Control System which allows for accurate control of squeeze loads, also at low values. This is important when handling umbilicals.
The 400mt deepwater crane (up to 3000m) is equipped with a deepwater lowering system and an active heave compensation system to counter-act the vessel’s heaving motion when landing a load on the seabed. These features will make it an efficient tool for the installation of heavy loads required for deepwater subsea production systems. The Huisman Mast Cranes are used within the industry for over 30 years and have become a standard in the design and construction of heavy lift cranes.