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Haven Jack-up upgrade

The Master Marine accommodation unit HAVEN required an upgrade for operations at the Johan Sverdrup Field.

The upgrade included the extension of the existing legs from approx. 130 m to 160 m and the replacement of the existing spudcan & add-on tanks by new suction caissons. The main contractor of the project was Lamprell, who fabricated all the new leg sections and suction caissons at their yard in Hamriyah, UAE. After which all materials were transported to Ågotnes, Norway. Boskalis was awarded the Heavy Lift scope with the Asian Hercules III consisting of 20 lifts up to 2,500 t and lifting heights up to 120 m down to 65 m below sea level.

Related projects

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Seabed preparatory works,
Dana Medway

Dana Petroleum Netherlands B.V. is the operator of the Pllb De Ruyter field and oil-producing platform located in the Dutch section of the North Sea.

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Rock installation, PDET

In 2008 Boskalis was approached by Petrobras to carry out a rock installation project at the oceanic terminal, one of Petrobras’ offshore oil production locations. The terminal, situated at Campos Basin offshore Rio de Janeiro, Brazil, is a maritime complex consisting of one Independent Re-pump Platform (PRA-1), two monobuoys and a FSO vessel which links to a 20 inch gas pipeline system.

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Construction wind farm, Belwind

SMIT sheerlegs Taklift 4 installed the final element for one of Belgium’s first offshore wind farms, Belwind, the wind farm’s high voltage transformer substation. SMIT also provided the transport of the element and other marine support services to assist the construction of the wind farm.

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Offshore wind farm, Walney

Windfarm construction projects regularly feature in the work programmes of SMIT’s sheerlegs fleet. For example, the Taklift 7 was involved in the Walney Offshore Windfarm development in the Irish Sea. Walney Offshore is a wind farm project developed by DONG in the Irish Sea, some 20 miles from the coast at Barrow.

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Pipeline crossing, Strait of Magellan

The project involved the construction of a new, strategically important, 24" natural gas pipeline across the Strait of Magellan, linking Cabo Espíritu Santo in Tierra del Fuego province with Cabo Vírgenes in Santa Cruz province. The new pipeline was built as an expansion of the existing San Martín pipeline in an effort by the government to increase gas supplies from Tierra del Fuego to the Argentinian mainland.

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Offshore wind farm, Sprogø

On behalf of marine contractor Aarsleff, SMIT was involved in the construction of the new Sprogø Offshore Windfarm, west of Copenhagen.