TGS chooses Exail Gaps M7 USBL system to optimize offshore geophysical surveys

To strengthen the accuracy and efficiency of its offshore geophysical operations, energy data and intelligence specialist TGS has chosen the Gaps M7 USBL system from Exail. This compact, pre-calibrated positioning solution combines USBL and inertial navigation system (INS) technology to deliver reliable subsea tracking – from ultra-shallow environments to depths of up to 7,000 metres.

With a 200° acoustic aperture, it enables true horizontal tracking for high-accuracy positioning, making it ideal for TGS’s demanding offshore surveys. Lightweight and pre-calibrated, the Gaps M7 ensures fast deployment, minimizing downtime and streamlining survey workflows. Its rugged design guarantees stable performance in harsh offshore conditions, supporting TGS in acquiring high-quality geophysical data while reducing project costs.

“We needed a solution that would provide reliable, precise and high-elevation tracking of our magnetometer and sidescan sonar,” said Anders Landbø, director maritime performance and projects at TGS. “After testing other USBL systems without satisfaction, we tried Gaps and then decided to invest in this solution as it exceeded our expectations, offering ease of use and exceptional performance. Its pre-calibrated setup and high accuracy in shallow waters have significantly improved the efficiency and reliability of our offshore operations, and we are confident it will continue to enhance our geophysical surveys.”

“We are excited to support TGS with the Gaps M7 USBL system,” said Carl Trollet, regional sales manager at Exail. “This collaboration reinforces Exail’s position as a trusted partner for offshore operations. Delivering the precision, reliability and efficiency needed to meet the complex challenges of subsea tracking, Gaps M7 will help TGS continue to push the boundaries of geophysical surveys in the most demanding environments.”