In using a new method for installation of Submerged Turret Loading Buoys, Jumbo demonstrated that transportation and installation of such a complex mooring system can efficiently and safely be done by her DP2 class heavy lift vessel Jumbo Javelin. The Jumbo Javelin, with it's sister vessel Fairplayer (to be delivered mid-2008) have two 900 ton mast cranes and an unobstructed flush work deck area of 3100 m~2. Both cranes are operated by remote control, which makes operation and communication between crane operators and construction managers efficient and easy. In two voyages a total of 16 large suction anchors (1,492 tonne/16,263 m~3) were transported from Saint John, New Brunswick to the offshore installation site 18 miles East of Boston. After installation of the suction anchors and laying of anchor chain (7,900 m/2,900 tonne), the spiral strand wires were unreeled and connected to each STL buoy and subsequently handed over to the AHT for connection to the pre-laid mooring chains. This complex project was successfully completed in 30 offshore days.
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