Pioneering Spirit used its jacket lift system to install both suction bucket foundations and topsides in shallow water for 50Hertz’s OST-6-1 connection, completing the work in one offshore campaign.
Allseas has started construction of the 60,000-tonne semi-submersible heavy transport vessel Grand Tour at Guangzhou Shipyard International in China.
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.
