Streamer Steering

Sercel Nautilus integrated streamer control device

The 3-in-1 Sercel Nautilus® device provides acoustic positioning, depth control and automatic steering in one integrated unit. Nautilus regularizes the spread automatically to give better 3D coverage, and provides greatly improved 4D repeatability by combining this with feather-matching, depth control and more accurate steering to pre-plot positions.

steered streamers
The unique Nautilus three-wing design provides the
highest steering force in the industry

The combination of Nautilus and the industry-leading Sentinel Solid Streamer® provides the quietest steered streamer available. Nautilus provides options for great operational flexibility:

  • regularize spread to a designated master streamer
  • steer master and regularize rest of spread to follow
  • independent steering of any or all of the streamers


  • Single integrated unit, purpose-designed for Sentinel streamers, providing:
  • Streamer positioning with full acoustic bracing
  • Streamer depth control
  • Streamer steering
  • Streamer powered
  • Automatic regularization of streamer separation and depth
  • Advanced acoustic network provides accurate positioning along the full length of the streamer
  • Redundant telemetry and power supply systems
  • Advanced hydrodynamic design provides powerful steering


  • No routine lithium battery shipments
  • Fewer workboat trips so less in-water HSE exposure
  • Safer operations near offshore installations
  • Fewer devices on streamer
  • Quieter when steered due to reduction of the vortex on front side of streamer caused by crossflow.
  • Improved 4D repeatability
  • Improved full streamer positioning
  • Reduced infill due to uniform streamer shape
  • Better control of denser streamer spreads  
nautilus spread nautilus rack

The Nautilus node contains all the acoustic, depth and steering electronics. The wing assembly is a mechanical interface only, which clamps onto the node for easy and safe installation. The patented three control surface design and linkage provides maximum steering power and stability with minimum streamer noise, all optimized specifically for seismic acquisition speeds (5 knots).

Offshore - Dovetail


Streamer fanning with intelligent interpolation to reduce infill in areas of strong currents with significant and unpredictable feathering.
Offshore - 4D Solutions

4D Solutions

Our 4D toolbox ensures seismic repeatability via powerful integrated vessel, source and streamer steering with source signature monitoring .
Offshore - Sentinel Solid Streamers

Sentinel Solid Streamers

Best signal-to-noise ratio. Lowest frequencies. Most reliable 4D. Widest weather window. Broadband ready. For the most demanding applications, choose Sentinel.

Offshore - Fleet

Our Fleet

Our fully-modernised, versatile, high-end fleet, positioned regionally, provides maximum availability with local experience complementing our global expertise and technical excellence.
Offshore - Tailored Acquisition Solutions

Tailored Acquisition Solutions

Acquisition tailored to your geological challenges, time or budgetary constraints. Innovative spread designs and imaging solutions for complex geologies or time-limited or difficult access.
Offshore - People and Service

People and Service

Our experienced people make the difference, being knowledgeable, reliable and open, with the resources and expertise to go the extra mile.

Offshore (Marine)


Contact us by opening an online inquiry.



EITHER... search our portfolio of innovative solutions:


OR... browse our alphabetical directory of geoscience products and services:

Industry Articles


Explore CGG's impressive library of journal and magazine articles.

Sustainability - Quietsea


Read more about Quietsea™ marine seismic equipment and its ecodesign.

Sustainability - Sustainable Development Report 2013


In 2014, CGG published its second Sustainable Development report as its 6th Communication on Progress.