TWD worked with GEOCEAN during the preparation phase of Project Marine XII, focusing on subsea installation of a submerged swivel and yoke system for an FLNG development.

The work began with a review of tender documentation and continued through concept and detailed engineering of project equipment. This included the design of the installation template, casing, and stinger, supporting the accurate installation of submerged pin piles for the swivel and yoke system.

Key challenges included keeping the template light enough for the available crane capacity while addressing very soft seabed conditions and meeting strict verticality and installation tolerance requirements. The template also supported subsea drilling and grouting works.

The companies stated they look forward to supporting additional subsea installations together.