Jumbo sized TP installation job completed

Jumbo’s DP2 Heavy Lift Vessel Jumbo Javelin installed the 111 TP’s with a record breaking installation rate of three per day. The transport, installation, access to the TP’s and grouting was done without any Lost Time Injuries. Once again Jumbo proved to have a very safe and efficient concept for the transport and installation of wind farm foundations with the use of only one free floating vessel on DP.

The TP’s, weighing up to 180 tons each, were loaded in Aalborg, Denmark and transported to the offshore location on board the Jumbo Javelin. At the field the heavy lift vessel positioned itself on DP and lifted the TP’s from its hold to place them on the pre-installed monopiles. Anholt Offshore Wind Farm is being built by DONG Energy. Jumbo is contracted by the Danish contractor MT Højgaard, which is in charge of the foundation installation work.

During mobilisation the Jumbo Javelin was outfitted with job specific equipment, including a motion compensated walkway by Ampelmann to provide safe access to the TPs, a grout plant (Densit) and Jumbo’s new temporary accommodation unit. This offshore approved unit accommodates up to 50 persons and can be placed on all J-type vessels in Jumbo’s fleet. The Jumbo Javelin was also equipped with in-house developed passive heave compensators (with a 2.5m stroke and a Safe Working Load of 300 tons) and two job specific, remote operated spreader bars to lift the TP’s.

The Jumbo Javelin is able to carry up to 9 TP’s at a time, stowed vertically in the hold. The vessel is well equipped for wind farm installation work. It is free floating, uses its DP2 system combined with a newly installed Taut Wire reference system to position itself, has a transit speed of up to 17 knots and is able to sail with open hatches. This means a large transport capacity, fast transit times to and from the installation site, efficient installation up to three TP’s a day and easy relocation from one position to the next.