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Ramform Sterling

30 Jun 2009



Ramform Sterling

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Ramform Sterling  


The History of the Ramform


Since the first Ramform seismic vessel sailed out of the yard in May 1995 its delta shaped design has become a trademark for PGS, a symbol of innovation and an icon for our industry.



Record Breaking Performance

These ships have smashed about every seismic production record and revolutionized the marine seismic industry. In 1995 3D seismic was an art, today it is an industry.


Thanks to the 40 meter broad beam and ultra-stable hull construction PGS was able to produce first more and more efficient seismic with ultra wide streamer tows, then better and better resolution data with the introduction high density (HD3D) seismic and ever higher streamer counts.


Strong but Silent

The first Ramform vessel, the “Marjata”, was a surveillance  ship designed for the Norwegian navy . PGS spotted the potential of the vessel, quickly recognizing that the wide stern and silent construction made her perfect for seismic acquisition where it is desired to have as little noise as possible from the vessel itself during data acquisition. The unique broad stern design enables quick and safe deployment and retrieval of massive volumes of towed seismic equipment.


The Ramform Explorer launched in 1995, was followed by the Ramform Challenger in 1996, the four V-class vessels Ramforms Valiant and Viking in 1998, Ramform Victory and Vanguard in 1999.


Record Breaking Performance

The PGS Ramform vessels were the first to tow, eight, ten, twelve, fourteen, sixteen and seventeen streamers. The PGS Ramform vessels remain the only seismic vessels routinely towing twelve streamers, and the only seismic vessels capable of towing more than twelve streamers.


This capability provides PGS with unmatched survey flexibilities, efficiency and operational safety.

The Ramform S-Class

On March 12th 2008 PGS launched the S-class with the Ramform Sovereign. She immediately proved her mettle sailing straight into production and on her maiden project in May that year in the Norwegian North Sea, she set a new industry record deployment of 17 streamers.


On July 1st, 2009 sister ship Ramform Sterling joined the fleet. Built by STX in Romania and Norway. Like the Sovereign she is 16 meters longer than the previous class of Ramforms with significantly higher acquisition and transit speed, 25 percent longer endurance, and 60 percent higher production capacity compared to the rest of the Ramform fleet.


The S-class are easily the most powerful seismic ships in the world, with a power plant supplying 30,000 horsepower. The vessels feature many new innovations, including the world’s first roll compensated helideck, steerable sources, dual workboat capacity and unique gear handling systems.


The range of technologies employed promises to make this the new benchmark for 3D, 4D and wide azimuth acquisition – in terms of productivity, efficiency, safety and data quality.


Some Quotes Regarding the New Vessel

Jon Erik Reinhardsen, President and CEO

"This delivery is an important milestone to PGS, as we are combining the most
sophisticated technology in the business, with the newest vessel in the
industry. Ramform Sterling is adding another of the world’s most cost effective vessels to our fleet, giving PGS a clear competitive edge in the market.”


Group President Marine

"We are very excited at the prospect of getting another Ramform S-Class into operations. There has been enormous interest amongst our client base for the vessel, and despite the general slowdown in the seismic market we register that interest for the high productivity, efficiency and safety of the Ramforms mean Ramform Sterling already has firm projects lined up. We expect to set more industry records for operational efficiency. Once again, this is a fantastic addition to the fleet " 


Ramform Sterling Fast Facts

  • Capacity of 22 streamers at 8 km length
  • 400 tons of highly sensitive electronic equipment deployed over an area equivalent to 830 soccer pitches
  • The power station on Ramform Sovereign generates up to 30 000 horsepower
  • When collecting seismic data, the Ramform Sovereign generates around 160 tons of thrust, equivalent to two Boeing 747 aircraft at takeoff
  • 53 cabins - all with separate bathroom
  • All modern conveniences onboard: Fitness room, swimming pool, relax- and conference room




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Media Contact

Bård Stenberg
VP Corporate Communications
Lilleakerveien 4C
0283 Oslo
Direct: +47 67 51 43 16
Cell: +47 992 45 235


Rune Olav Pedersen
General Counsel and SVP Communications & Marketing
Lilleakerveien 4C
0283 Oslo
Direct: +47 67 51 57 06
Cell: +47 90 81 63 37

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