PGS names third Ramform Titan seismic ship

Written by Nick Blenkey
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Ramform Tethys is 70 m wide at stern

MARCH 17, 2016 — PGS reports that the third of four 104.2 m x 70 m Ramform Titan-class seismic vessels, the Ramform Tethys, was named in a ceremony held today at the Nagasaki shipyard of Japan’s Mitsubishi Heavy Industries Shipbuilding Co.

PGS’ first two Ramform Titan-class vessels, the Ramform Titan and the Ramform Atlas, were delivered in 2013 and 2014 and, according to PGS, have “delivered beyond expectations,” especially in terms ofsafety, efficiency and productivity.

PGS says the Ramform Tethys, and the Ramform Hyperion, “will be even better,” due to small modifications of equipment handling on the back deck and an increase in engine power to 26,400 kW compared with the 23,040 kW of the first two Ramform Titan-class vessels.

“With the increased power output and the back deck modifications we are enhancing the Ramform Titan-class acquisition platform further. Productivity, safety, stability and redundancy are the key benefits of these vessels. Their ability to tow many streamers gives high data quality with dense cross-line sampling and cost efficient acquisition with wide tows,” says Per Arild Reksnes, EVP Operations.

PGS says the Ramform Tethys is the most powerful and efficient marine seismic acquisition vessel in the world.

The Ramform Titan class vessels are the widest ships ever at the waterline. The design dovetails advanced maritime technology to the imaging capabilities of the GeoStreamer seismic acquisition technology. Ramform Thethys’s 70 meter broad stern is fully exploited with 24 streamer reels: 16 reels aligned abreast and 8 reels further forward, with capacity for 12 kilometer streamers on each reel.With such capabilities the Ramform Tethys has tremendous flexibility and redundancy for high capacity configurations.

The vessel carries over 6,000 tons of fuel and equipment and will typically tow a network of several hundred thousand recording sensors over an area greater than 12 square kilometers, equivalent to 3.5 times the area of Central Park.

For PGS and its clients, more rapid deployment and retrieval of equipment, as well as greater operational capacity will translate into faster completion of surveys and increased uptime in marginal weather. The period between major shipyard stays is also extended by approximately 50%.

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