Siem Helix 1

The Siem Helix 1 is a purpose designed, advanced well intervention vessel capable of completing a wide range of subsea projects

These projects include well intervention, well decommissioning, top hole drilling, subsea installation work, offshore crane and ROV operations, offshore construction work and emergency response capabilities.

The Siem Helix 1 vessel has a length of 158 meters, a beam of 31 meters and an accommodation capacity for 150 people combining exceptional operational capabilities with excellent performance and station keeping.

Helix well operations has incorporated the latest technology in testing, handling, deploying, operating and retrieving the intervention riser system and associated well services, providing optimum capability and efficiency for conducting through tubing well intervention.

The Siem Helix 1 is classed as a Well Intervention Vessel (WIV) and can operate in up to 3,000 m of water with transit speed in excess of 15 kn, capable of providing service quickly and efficiently where needed.

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Year built



Siem Offshore

Length overall




Helideck rating

Sikorsky, S-92


2 x 200Hp Triton XLX WROVS; High sea state Launch and Recovery System Control systems built into the vessel; Undercover ROV workshops and maintenance areas


An advanced vessel capable of completing a wide range of subsea projects

  • Galley and mess room
  • Conference rooms and offices on various decks
  • Helideck reception are and heli-lounge
  • Gym, hospital and sick bay
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If you’d like to talk more about how we can help you, don’t hesitate to get in touch. We’ll be happy to discuss your project and work out the best way we can support you moving forward.

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