Simrad SU90

Long-range 20-30 kHz fish-finding omnidirectional 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.

WINSON operating software

The SIMRAD SU90 uses the latest "Winson" software. This unique software platform is common for all Simrad sonars. It allows you to present the various sonar echoes in separate views, which can be placed on separate display monitors. Another great feature of the new software is its ability to "ping" all the beams simultaneously. This increases the ping rate and thus offers a more frequent update of the sonar echoes in the views.

Sonar operating panel

You can set up your SIMRAD SU90 sonar with the Mk2 Sonar Operating Panel. This operating panel uses a handy multifunction joystick. The joystick facilitates tilt, vertical, and inspection beam control through simple pushes or twists of the knob. The operating panel communicates with the Processor Unit using an Ethernet connection. This communication format allows for advanced functionality. You can manage up to four different SIMRAD sonars using a single panel. Conversely, up to three panels in various locations on the vessel can operate a single sonar. The USB port on the operating panel also provides convenient software upgrades and user settings management. The sonar operating panel also features dedicated and customizable buttons and knobs, and its design allows for a straightforward upgrade from older panels using a mounting bracket.

Advanced sonar capabilities

The SIMRAD 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.


Keep your SIMRAD SU90 updated with the latest software version. Follow us on social media to keep up with the changes, and contact your dealer for upgrades. For the latest software version, check the dedicated SU90 software article.

End-user documentation

All relevant user- and installation manuals, certificates and drawings for the SIMRAD SU90 fish-finding sonar are available. To access the information, open the relevant article using the link at the bottom of this page. Several formats are provided, including interactive electronic technical manuals (IETM). Selected publications are also available in additional languages.

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

Find your local dealership

Our global dealership network enables distribution to more than 100 countries to meet customer needs at any location. Find your local dealership here.