Tritech SeaKing Towfish SK150 – Side Scan Sonar

The Tritech SeaKing SK150 side scan sonar combines Tritech’s DST (Digital Sonar Technology) electronics with industry-leading transducer design and digital CHIRP signal processing techniques, to offer users side scan sonar imagery of unprecedented clarity.



The SeaKing Towfish SK150 is specifically designed to fly up to a maximum towing depth of 120m (393ft), the SK150 side scan can be used for high resolution surveys at depths other lighter systems cannot reach.
The advanced 150kHz composite transducer assembly provides superior image quality and long range.
The SK150’s simple, modular design provides increased reliability and facilitates quick in-field repairs should any damage occur during operation. All electronics are located in a single subsea pressure housing isolated from the rest of the towfish. The stabilising fins can be cheaply and easily replaced and a simple sheer and recovery mechanism is provided in the event of the SK150 side scan becoming snagged.

As part of Tritech’s SeaKing range of sonars, sensors it is possible to run the SK150 with other SeaKing sensors over one communication link. All products in the SeaKing family (or third-party products within the ARCNET communications link), can be run simultaneously, using the same processor and display; such as Tritech’s Surface Control Unit (SCU) or a customer supplied PC or laptop. In addition to the display of side scan sonar data, the system will take position input from GPS. This information is recorded along with the sonar data to allow a ‘fix’ of a target.

The SK150 Towfish side scan sonar is fully compatible with all Kiltec and Easyreeling electric winches.

Technical information

Operating frequency: 150kHz
Beamwidth: 60° vertical, 1.4° horizontal
Pulse length: 400μs
Maximum range: 350m
Minimum range: 0.4m
Range resolution: 5 – 300mm
Bandwidth: 40kHz

Electrical and Communications
Power requirement: 36 to 72V DC at 12W
Connector: Tritech standard 6-pin waterblock
Cable: Wire armoured

Software: Tritech Seanet Pro or low level direct
access and control
Data log format: Tritech V4Log as standard Export to XTF, TIFF, GeoTIFF and
Google Earth KMZ via converter

Weight in air: 25.5kg
Weight in water: 15.5kg
Depth rating: 120m
Materials: Polyester powder coated aluminium
Operating temperature: -10 to 35°C
Storage temperature: -20 to 50°C
Maximum towing speed: 5 knots


side-scan-sonar-tritech-seaking-towfish-sk150 Datasheet


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