Greater Gabbard, based off the UK’s south coast, was aided by Jumbo’s DP2 heavy lift vessel ’Jumbo Javelin’ at a record-breaking installation rate of more that one TP per day.

Jumbo Offshore at work

Jumbo Offshore at work

Jumbo Offshore installed 131 TP’s, out of 140 in the field. The project was the first time that TP’s have been transported and installed using a free floating vessel on dynamic position (DP); the firm were tasked with transporting, installing, leveling and grouting of the TP’s.

For each trip, after loading nine 280t TP’s in the Port of Flushing, the Jumbo Javelin sailed to the offshore location, remained at DP while overboarding the first TP onto the monopile. Each TP was based in the required location, and leveled to its final position; the space between the TP and monopile (the annulus) was then filled with grout for a permanent fixture. Once surveyed, the TP was then handed over to client Fluor.

Jumbo Offshore at work on the Greater Gabbard Offshore Wind Farm

Jumbo Offshore at work on the Greater Gabbard Offshore Wind Farm

Each TP weighs up to 300t, with the Jumbo Javelin able to transport nine at a time at a transit speed of 17 knots, thus making it a useful tool for wind farm installation work.

Client Fluor deals in engineering, procurement, construction, maintenance (EPCM), and project management companies.