News

Construction begins on CS GENESIS and CS TRIUMPH for OMS Group

16 December 2025
Two modern vessels, CS GENESIS and CS TRIUMPH, side by side in calm ocean waters under a clear sky.

IHC Offshore Energy has celebrated the twin keel laying ceremony that marks the official start of construction for CS GENESIS and CS TRIUMPH, the first two fibre optic cable lay vessels in OMS Group’s GREAT Class fleet. 

With an aging fleet of vessels, the telecoms industry is struggling to keep pace with the demand for subsea data cables. OMS Group is the first independent telecoms contractor to commission new build fibre optic cable lay vessels, directly addressing this gap. With CS GENESIS and CS TRIUMPH, OMS Group will have the capability and capacity to support complex, large-scale subsea cable installation projects and strengthen our global digital infrastructure.

A group of people in hard hats and formal attire are gathered for a group photo at the keel laying ceremony of the GREAT Class Fleet.
Keel for CS Genesis at a shipyard, featuring a large sign and company banners from Royal IHC and OMS Group.
Keel for CS Triumph at a shipyard, featuring a large sign and company banners from Royal IHC and OMS Group.

High-capacity fibre optic cable lay vessels

Built on Royal IHC’s proven Type-22 platform, CS GENESIS and CS TRIUMPH will each feature two large cable tanks and dual firing lines, enabling both cable lay and cable maintenance operations.

The vessels will be equipped with fully integrated mission equipment and the Sea Stallion FibrePro plough, with 300 kW jetting capability that enables cable burial and protection to 3.3 metres. Provisions for ROV integration support seabed inspection, cable inspection, touch down point monitoring and route verification (post lay burial surveys).

Key specifications

  • Length: 128 m
  • Breadth: 22 m
  • Design draught: 7.7 m
  • Accommodation: 75 POB
  • Cable tank capacity: 6,500 t
  • Plough trench depth: 3.3 m
  • Bollard pull: 115 t

Hybrid and energy efficient design

The cable lay vessels will be AUT-IMS certified, featuring an optimised hull design, hybrid diesel‑electric propulsion, and advanced energy‑storage systems. This stabilises power demand during cable lay operations to reduce fuel consumption and lowers emissions, supporting OMS Group’s commitment to improved environmental performance.

Designed for the next generation

The 75-person accommodation has been thoughtfully designed to support OMS Group attract and retain the next generation of maritime talent, with modern and open living and working spaces.

First delivery in 2027

Over the coming months, construction will continue for both vessels at Royal IHC’s partner yard, Pacific Shipbuilding JSC, in Vietnam. CS GENESIS is planned for delivery in 2027, with CS TRIUMPH following in 2028.

Render of CS Triumph - a large blue and white vessel on calm seas with blue skies.
Render of a white A-frame overboarding a red and white subsea plough from a blue and white vessel. On calm seas with blue sky.
Royal IHC vessels

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