Simrad SU90

Fish-finding sonar

The Simrad SU90 is the ultimate long-range, low-frequency fish-finding sonar. We made no compromises during the design of this sonar. If high performance is your only criterion when choosing a sonar, this is your natural choice. If long range, high resolution, narrow beams and high source levels are essential criteria for you, the Simrad SU90 is the sonar you need. Our goal was to make the ultimate performance sonar.


  • Subsea
  • Sonar
  • Fish-finding sonar
  • Fish Finding

Advanced Sonar Capabilities

The SU90 allows you to choose an operational frequency between 20 to 30 kHz (in 1 kHz steps). The cylindrical multi-element transducer allows the omnidirectional sonar beams to be tilted electronically from +10 to –60 degrees. This enables you to automatically track schools of fish and observe the whole water volume around the vessel. The stabilizing system included allows for electronic pitch and roll compensation, ensuring precise and reliable tracking of marine life.

Enhanced Performance and Resolution

Compared to the Simrad SX90, the number of channels is increased by 50%, giving the sonar an even better performance in selectivity and range. The narrow opening angle (4.9 degrees at 30 kHz) and the increased source level (3 dB) make the SU90 a powerful, high-resolution, low-frequency sonar. These features are ideal for searching for fish near the bottom or the surface at long ranges and provide a better vertical view with minimized bottom climbing, that other sonars with a wider beam might experience.

Intuitive Operation and Enhanced Data Processing

Providing several standard interface lines makes communicating with peripheral devices and sensors easy. We prioritize intuitive user interfaces and optimal sonar presentations on high-resolution color monitors. Celebrated features such as Hyperbolic FM (HFM) transmissions, also known as 'chirp', ensure a clutter-free picture with high range resolution. The signal processing and beamforming are carried out swiftly and effectively in a digital system to present clear and easily comprehensive sonar data.

Key features

  • 360 degrees omnidirectional
  • 90 degrees vertical tip
  • Operational frequency adjustable from 20 to 30 kHz
  • Narrow beams (opening angle 4,9 degrees at 30 kHz)
  • Increased source level (3 dB higher than SX90)
  • Hyperbolic FM transmissions ("Chirp")
  • Large dynamic range
  • High definition
  • Stabilized beams
  • Dual-beam operation
  • Easy operation
  • Store and recall sonar data
  • Define and save your own user settings
  • Clear and easily comprehensive sonar data

We offer comprehensive after-sales assistance

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