Siem Helix 1 Subsea Well Intervention Vessel | Subsea Services Alliance

Siem Helix 1

Purpose-designed, advanced well intervention vessel equipped with work-class ROVs and capable of a wide range of subsea projects

Siem Helix 1 at sea
Year built
persons accommodated
520.5 ft
Overall length
102 ft
Up to 10,000-ft [3,000-m] operating water depth
Helideck rating: Sikorsky S-92
Two 200-hp Triton XLX work-class ROVs (WROVs); high-sea-state launch and recovery system control systems built into the vessel; covered ROV workshops and maintenance areas

Project capabilities of the Siem Helix 1 include subsea well intervention or decommissioning, tophole drilling, subsea installation work, offshore crane and ROV operations, offshore construction work, and emergency response activities.

The size and accommodation capacity are suitable for exceptional operational capabilities with excellent performance and station-keeping. The vessel incorporates the latest technology in testing, handling, deploying, operating, and retrieving the intervention riser system and associated well services, providing optimal capability and efficiency for conducting through-tubing well interventions.

Siem Helix 1 is classed as a Well Intervention Vessel (WIV) and can operate with transit speeds in excess of 15 knots for providing service quickly and efficiently where required.

Siem Helix 1 Advanced Well Intervention Vessel
Equipped with work-class ROVs and suitable for a wide range of subsea projects