Most offshore construction vessels (derrick lay vessels) used for the installation of subsea pipelines have both pipe-lay and heavy-lift functionalities. Ulstein stinger handling system designs provide a new level of effectivity and performance for demanding pipe laying operations with its cutting-edge solutions such as the compact chain-type stinger handling system, which has been awarded the biannual IRO Innovation Prize.
Chain-type Stinger Handling System
A major benefit of the concept is the substantially reduced time it takes to install or dismount the chain system, compared to the time required to install or dismount a standard cable system. Other important benefits are increased overall operational uptime of the vessel, the considerable higher capability to absorb up-lift and the simple control system.
A-frame Stinger Handling System
The Ulstein A-frame Stinger Handling System design was developed in close collaboration between our mission equipment and ship design specialists. This allowed us to achieve the best integration between the equipment and the vessel interfaces, such as the main crane and pipe-line firing line. To date, two systems have been manufactured, installed and in operation on the 'Sapura-Kencana 1200' and 'Sapura-Kencana 3500' vessels.