Boskalis and Allseas Awarded €1.2 Billion Contract for Taiwan Offshore Gas Pipeline

Strategic Insights -

The 50/50 consortium between Boskalis and Allseas has been awarded a significant contract by CPC Corp. Taiwan for the second offshore gas pipeline from Yongan to Tongxiao (YT2), worth approximately €1.2 billion. The project aims to support Taiwan's energy transition and enhance gas supply capacity in northern Taiwan. The consortium will design, construct, and install the 232-kilometer 36-inch offshore natural gas pipeline, which will run parallel to the existing YT1 pipeline, connecting the Yongan LNG terminal with the Tongxiao transfer station.

Key Takeaways:

  • The consortium will be responsible for the landfalls and associated microtunnelling activities, as well as nearshore and offshore trenching, backfilling, and the installation of rocks for the 34 pipeline crossings.
  • Boskalis will deploy two large hopper dredgers, a large backhoe dredger, and a subsea rock installation vessel for these activities.
  • Allseas will carry out the pipeline installation and pre-commissioning, including the pre-lay installation of concrete mattresses, and will deploy two of the most advanced pipelay vessels in the industry.
  • The project demonstrates Boskalis' and Allseas' commitment to supporting the development of critical energy infrastructure and reinforces their leading position in the offshore sector.
  • The consortium will play a key role in enhancing the reliability and security of natural gas supply for the region.
  • Project execution is scheduled to commence in 2026, with completion anticipated in 2028.
  • Boskalis is a global services provider operating in the dredging, maritime infrastructure, and maritime services sectors.
  • Allseas is a family-owned global offshore contractor specializing in pipelay, subsea construction, and ultra-heavy lift.

Statistics:

  • Contract value: approximately €1.2 billion
  • Pipeline length: 232 kilometers
  • Pipeline diameter: 36 inches
  • Number of pipeline crossings: 34
  • Number of landfalls: 2
  • Number of nearshore and offshore trenching and backfilling activities: multiple
  • Number of subsea rock installation vessels: 1
  • Number of pipelay vessels: 2
  • Duration of project execution: 2026-2028

Sources:

  • Boskalis and Allseas press release
  • CPC Corp. Taiwan press release
  • Boskalis company website: www.boskalis.com
  • Allseas company website: Allseas.com (no website mentioned, therefore cannot cite)