- T-Class
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Ramform Titan
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Ramform Atlas
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Ramform Tethys
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Ramform Hyperion
- S-Class
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Ramform Sovereign
- V-Class
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Ramform Vanguard
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Ramform Victory
- Other
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Support Vessels
Ramform Titan
Ramform Titan
Launched in 2013, Ramform Titan is one of the most powerful seismic ships ever, fully integrated with GeoStreamer technology and offering high equipment redundancy. Ramform Titan offers fast deployment and recovery of up to 24 steerable streamers plus steerable sources for optimal results.
Power & Propulsion
Source Capability
Receiver Technology
Streamer Capacity
Length & Breadth
Draft
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View detailed vessel specifications & moreRamform Atlas
Ramform Atlas
Built in 2013, The Ramform Atlas is engineered for maximum seismic data production, combining high power, tow density, and redundancy. With 24 streamer reels, 22 tow points, and advanced source handling, the Atlas enables safe, efficient operations in varying conditions, and supports full deployment of GeoStreamer® technology.
Power & Propulsion
Source Capability
Receiver Technology
Streamer Capacity
Length & Breadth
Draft
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View detailed vessel specifications & moreRamform Tethys
Ramform Tethys
Ramform Tethys, built in 2016, is a Titan-class seismic vessel built for power, redundancy, and flexibility. With 26.4 MW of propulsion, 24 streamer reels, steerable sources, and automated handling, she supports efficient, high-density 3D and 4D acquisition. Twin engine rooms and onboard maintenance enable safe, continuous operation.
Power & Propulsion
Source Capability
Receiver Technology
Streamer Capacity
Length & Breadth
Draft
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View detailed vessel specifications & moreRamform Hyperion
Ramform Hyperion
Ramform Hyperion, built in 2017, is engineered for sustained seismic performance in demanding offshore environments. Her 24-reel configuration and six source booms enable rapid deployment and recovery, supporting high-density 3D and 4D surveys using GeoStreamer technology.
Power & Propulsion
Source Capability
Receiver Technology
Streamer Capacity
Length & Breadth
Draft
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View detailed vessel specifications & moreRamform Sovereign
Ramform Sovereign
Ramform Sovereign is a high-capacity seismic vessel equipped with multisensor GeoStreamer technology, capable of towing up to 22 streamers. Designed for efficiency and endurance, she features low-emission propulsion, dual engine rooms for redundancy, and flexible configurations for sustained, high-volume offshore data acquisition.
Power & Propulsion
Source Capability
Receiver Technology
Streamer Capacity
Length & Breadth
Draft
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View detailed vessel specifications & moreRamform Vanguard
Ramform Vanguard
Ramform Vanguard is built for high-density seismic acquisition and has delivered strong performance worldwide. Regularly active in the fleet, she is fully equipped for advanced 4D surveys using broadband, multisensor GeoStreamer® technology, and specialist Ultra-High Resolution 3D (UHR 3D) making her a reliable asset for complex exploration and offshore wind applications.
Power & Propulsion
Source Capability
Receiver Technology
Streamer Capacity
Length & Breadth
Draft
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View detailed vessel specifications & moreRamform Victory
Ramform Victory
Launched in 1999, Ramform Victory is designed for advanced seismic operations and can tow up to 20 streamers. Equipped with multisensor, broadband GeoStreamer technology, she has delivered consistent, high-quality results across global projects, making her a proven and reliable asset in the fleet.
Power & Propulsion
Source Capability
Receiver Technology
Streamer Capacity
Length & Breadth
Draft
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View detailed vessel specifications & moreSupport Vessels
Support Vessels
TGS relies on modern seismic support vessels for crew changes, refueling, and logistics during extended offshore projects. Four purpose-built vessels - Thor Magni, Modi, Frigg, and Freyja - are chartered from PF Thor to meet TGS specifications. Additional support vessels are secured through long-term agreements with other trusted suppliers.
Length & Breadth
Draft
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View detailed vessel specifications & more-
Digital Dashboards
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Immersive Simulators
Digital Dashboards
Digital Dashboards Harness Liberated Operational Data
By liberating the data we are able to unlock new insights to further improve fleet safety and efficiency. Digital dashboards have been developed to monitor and manage vessel speed, fuel and energy consumption, towing loads, data quality attributes and HSE risks. Technology durability and performance lessons are improving, along with survey performance. Vessel and equipment maintenance scheduling can now be done on demand based on factual indicators. Other areas benefiting from digitalization include proactive prevention of certain HSEQ events and the detailed reporting of CO2 emissions.
- Predictable high quality from unmatched towing and handling capacity
- Reliable technology on all vessels: steerable source and receiver arrays, multi-sensor deep-tow GeoStreamer
- Power, safety and flexibility
- Dedicated experienced crews
Immersive Simulators
Digital Twins with Immersive Simulators Reduce Risk
At our digital-twin onshore training facility, we have built full-scale immersive simulators for the Ramform back deck, control room, and bridge. A linked support-vessel bridge simulator is also available. In the simulator environment, crews practice complex operations and train for challenging weather and environmental conditions. They can also collaborate on emergency response scenarios, together with teams in Oslo and elsewhere.
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The Ramform Signature
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The Power of Titan
The Ramform Signature
Design, Performance and Technological Advancements
The delta-shaped Ramform hull was designed by Norwegian naval architect Roar Ramde, and the first seismic Ramform vessel was inspired by the Norwegian naval intelligence vessel Marjata. It's sinusoidal waterline allows stable motion behavior at the beam. The vast back deck is perfect for installing and towing a large quantity and variety of equipment and also offers generous interior and instrument room capacity.
TGS acquired the rights to the vessel design with an agreement to build at least six ships. The first, Ramform Explorer, was launched in 1995 and immediately smashed all 3D seismic performance and endurance records. Each new generation of the design, from Ramform Challenger, the V-class and S-class ships to the mightily impressive Titan-class, brought more power and capacity, breaking new records. They increased safety, reliability, and efficiency, towing denser spreads and implementing GeoStreamer technology to improve data quality.
- All Ramform vessels are equipped with GeoStreamer multisensor, broadband technology
- GeoStreamer recording package with full streamer steering and eBird depth control
- All source sub-arrays equipped with proprietary steering devices
- Integrated underwater acoustic positioning network on paravanes, source sub-arrays, and streamers
- Barnacle prevention and automated cleaning solutions
The Power of Titan
Maximizing Seismic Efficiency, Safety, and Data Quality with GeoStreamer Technology
The Ramform Titan-class vessels were designed to fully utilize the potential of GeoStreamer technology. These ultra-high-capacity seismic vessels were built between 2013 and 2017. They are the most powerful design yet, enabling greater flexibility, and securing safer operations than any other 3D seismic vessels.
Ramform Titan, Ramform Atlas, Ramform Tethys, and Ramform Hyperion are 70 meters wide at the stern and equipped with 24 reels, each capable of holding over 10 km of streamlined seismic recording equipment with inbuilt GeoStreamer technology, and positioning units. They are designed for safe and efficient operations in even the harshest of environments.