Tritech SeaKing Towfish Sidescan Sonar

  • Extremely cost effective
  • Easy to deploy and recover
  • Low power and data rates
  • Compatible with SeaKing product family


  • Coastal surveys
  • Military mine counter measures
  • Salvage operations & treasure hunting
  • Pipeline and route surveys
  • River, harbour and canal surveys

The SeaKing Towfish Sonar System is an extremely compact and cost effective high definition sidescan sonar system. It is designed for a wide range of seabed survey and inspection duties.

Units are available with two operating frequencies. The high frequency 675kHz has the greatest resolution and a useful range out to 75 metres on either side of the tow track. The mid frequency 325kHz has a useful range in excess of 200 metres either side.

The sonar ‘fish’ is designed to tow cleanly and with excellent stability under all towing conditions.
The fish is fitted with durable Polycarbonate stabiliser fins. In the event of ground contact, the fins will break away and are retained for recovery by a shock cord line.

The fish has a weak link and safety recovery line. If it hits an obstruction the weak link will part but the ‘fish’ will not be lost. The towfish is small and light and may be manually deployed and operated by a single person from very small boats thus making it ideal for inshore and coastal applications.

In common with all Tritech sonar systems, SeaKing sidescans may be connected to a SeaKing SCU surface control and display unit or most PC’s. In addition to the display of sidescan data, the system will take position input from DGPS. This information is recorded with the sonar data to allow a “fix” of a target. The customer’s own bit map chart may be displayed on the same screen as the sonar data.

All data produced by the subsea towfish is processed within the fish and transmitted to the surface in digital format. All data may be stored on the built-in hard disk drive, in the surface control unit.