Offshore Construction Vessels

Two newbuild state-of-the-art offshore construction vessels (OCVs)
New OCVs

Echo  and Pulse  will form a powerful duo, embodying precision, communication, energy, strength and co-ordination. Both Echo  and Pulse  are under construction at Wuchang shipyards in Wuhan, China. Based on the proven SALT 308 OCV design, the vessels feature advanced equipment and systems to deliver enhanced performance, flexibility and functionality.

Offshore pipelay
Platform decommissioning
Platform transportation and installation

Designed with maximum operational versatility in mind, the vessels are ideally suited for subsea construction, ROV support, and inspection, maintenance and repair activities. 

The new vessels boost Allseas’ construction and support capacity, enabling greater deployment flexibility and freeing up existing OCVs for larger, more complex scopes of work. 

The first vessel is scheduled for delivery in September 2026, with the second following in December 2026. This investment ensures Allseas remains at the forefront of the growing offshore construction and subsea installation sectors. 

Download specifications Echo

Download specifications Pulse

Cutting-edge capabilities for a dynamic market

Each vessel will measure 100 metres in length, feature a 1,100 m² cargo deck and accommodate up to 110 personnel. Advanced features include: 

  • DP2 dynamic positioning system
  • 150-tonne active heave-compensated offshore crane
  • Hangar housing two work-class ROVs
  • Hybrid 1,500-kWh battery energy storage system
  • Methanol-ready propulsion design for future fuel flexibility.