Allseas has secured a contract from Western LNG to install the subsea section of the Prince Rupert Gas Transmission pipeline in northwestern Canada.

The subsea pipeline will form the final section of the 700 km PRGT system, which will transport Canadian natural gas to the planned Ksi Lisims LNG export facility on Pearse Island.

Under the contract, Allseas will install approximately 50 km of 36-inch and 48-inch concrete-weight coated pipeline. The offshore section will connect the onshore transmission system to the planned floating LNG facility.

Installation activities are scheduled for 2029. The pipelay vessels Solitaire and Sandpiper will carry out the work in water depths ranging from the shoreline to approximately 450 m.

The scope includes multiple shore crossings, shore pull-ins, above-water tie-ins, trenching, route stabilisation, and pre- and post-lay span rectification.

Once operational, the PRGT system will provide a new export route for Canadian natural gas.