Subsea 7 Unveils Flagship Construction Vessel Seven Borealis
19 October 2012
Installation contractors continue to respond to the increasingly complex and difficult offshore projects by broadening their construction capabilities. Seven Borealis, the latest addition to Subsea 7's fleet, is equipped for both S-lay and J-lay in all current water depths and installation of the heaviest subsea production structures.
Seven Borealis, completed by Sembawang Shipyard in Singapore in January, was commissioned originally by Dutch company Nordic Heavy Lift in May 2007. Nordic had envisaged "a classical, heavy-lift vessel," according to Gael Calleaux, VP Offshore Resources at Subsea 7, incorporating a 5,000-ton offshore mast crane, to be engineered and built by Huisman. Ulstein Sea of Solutions performed the original monohull vessel design, and the keel was laid at Nantong Yahua Shipbuilding in China in November 2008. Almost a year later, the hull was launched and subsequently towed to Sembawang's yard for further completion.