Allseas’ Pioneering Spirit transported North Cormorant to Lerwick Harbour, where the oil platform will be dismantled by Brown and Mason Group over 12 to 18 months.
ABB will supply four 3.5 MW Azipod units and a power package for Allseas’ 230 m semi-submersible heavy transport vessel Grand Tour, due to enter service in 2028.
Allseas has secured a contract to install approximately 50 km of subsea pipeline for the Prince Rupert Gas Transmission system in northwestern Canada.
Allseas’ Solitaire is nearing the end of a ten-month upgrade in Rotterdam before returning to the Gulf of Mexico and starting a two-year global pipelay campaign.
Mammoet supported Allseas in the 2025 load-in of the Heather Alpha and Eider Alpha topsides, completing both floating operations in a single shift after integrated preparation of Iron Lady for the two structures.
Allseas’ new cargo barge Braveheart has departed China for Rotterdam after an 18-month build, adding an electric ballast system and supporting Pioneering Spirit transfers.
Allseas is upgrading its heavy-lift vessel Pioneering Spirit, raising topsides single-lift capacity by 25% to 60,000 tonnes through a TLS upgrade ahead of major North Sea decommissioning and offshore wind projects into the 2030s.
Allseas will install a 500-km deepwater pipeline system for Enbridge in the US Gulf, including 515 km of subsea infrastructure. Installation will be executed by Solitaire, with offshore work planned for 2027–2028.
Boskalis, in partnership with Allseas, carried out dredging and diving operations in the North Sea to prepare a depleted gas field for conversion into an offshore CO₂ storage facility under the Porthos project.
