Super SeaKing DST New Generation Digital CHIRP Sonar.
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Features

  • Digital CHIRP system
  • Composite material technology used in new transducer design, providing:
    1. Greater range capability
    2. Greatly improved resolution and sidelobe suppression
    3. Direct interface compatibility with existing transducers (can be retro-fitted)
  • Modular transducer construction – elements replacable
  • New longer lasting slip ring assembly
  • Option of RS232 communications for single head applications

Applications

  • ROV obstacle avoidance
  • AUV obstacle avoidance and target recognition
  • Harbour and port interface surveillance

In a constant effort to bring ever improving products to the market, we are pleased to announce the introduction of the advanced Super SeaKing DST (Digital Sonar Technology) Dual Frequency CHIRP Sonar.

We have used the very latest in composite transducer and CHIRP technology to produce a sonar which delivers the clearest images available, at operating ranges previously unobtainable.

CHIRP technology dramatically improves the range resolution compared with conventional sonars. In fact resolution can be improved by a factor of five times. In addition, we have introduced a modular transducer design and longerlife slip ring assembly to minimise the consequences of operational damage and to further improve on the SeaKing DST’s already excellent reliability.

The Super SeaKing DST shares many of the features of the earlier SeaKing, which has been chosen as the standard obstacle avoidance sonar in many of the professional ROV fleets around the world.

The Super SeaKing DST is not one but two mechan-ically scanned imaging sonars in a single pressure housing : a 325 kHz CHIRP sonar with a true operational range of up to 300 metres for long range target acquisition, and a 675 kHz CHIRP sonar for ultra-high definition images. Other frequency options are available on request.

All products in the SeaKing DST family can be run simultaneously on a single ArcNet communications link, using the same processor and display.

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Specifications.

Super SeaKing DST Sonar Head
Operating frequency (low) CHIRPing from 250 to 350 kHz
Operating frequency (high) CHIRPing from 620 to 720 kHz
Optional high frequency 1 MHz
Beamwidth, vertical 20°[325]
Beamwidth, vertical 40°[675]
Beamwidth, horizontal 3.0°[325]
Beamwidth, horizontal 1.5°[675]
Maximum range 300 m [325]
Maximum range 100 m [675]
Minimum range 0.4 m
Range resolution 5 – 400 mm depending on
Source level range
210 dB re 1uPA @ 1 m
Pulse length 20 – 300 microsec
Scan modes Various combinations of
Mechanical step sizes resolution & speed
0.225°, 0.45°, 0.9°, 1.8°
Mechanical resolution 0.225°
Scanned sector Variable to 360°
Continuous 360° mode Yes
available Yes
Sector offset mode available
Overall maximum diameter 110 mm
Maximum length 242 mm
Weight in air 3.0 kg
Weight in water 1.4 kg
Standard maximum 4,000 m
operational depth 6,800 m
Optional maximum
operational depth Aluminium alloy-HE30, RPU
Standard materials
Optional materials Stainless steel
Super SeaKing DST Sonar Head
Operating frequency (low) CHIRPing from 250 to 350 kHz
Operating frequency (high) CHIRPing from 620 to 720 kHz
Optional high frequency 1 MHz
Beamwidth, vertical 20°[325]
Beamwidth, vertical 40°[675]
Beamwidth, horizontal 3.0°[325]
Beamwidth, horizontal 1.5°[675]
Maximum range 300 m [325]
Maximum range 100 m [675]
Minimum range 0.4 m
Range resolution 5 – 400 mm depending on
Source level range
210 dB re 1uPA @ 1 m
Pulse length 20 – 300 microsec
Scan modes Various combinations of
Mechanical step sizes resolution & speed
0.225°, 0.45°, 0.9°, 1.8°
Mechanical resolution 0.225°
Scanned sector Variable to 360°
Continuous 360° mode Yes
available Yes
Sector offset mode available
Overall maximum diameter 110 mm
Maximum length 242 mm
Weight in air 3.0 kg
Weight in water 1.4 kg
Standard maximum 4,000 m
operational depth 6,800 m
Optional maximum
operational depth Aluminium alloy-HE30, RPU
Standard materials
Optional materials Stainless steel
Surface Controls and Display
Software Features 1 to 300m
Range selection
Gain and contrast Rotatory controls
Scanned sector Fully variable in direction and width
Quick select origin shift to 360°
Centre, forward, reverse, left and
Resolution selection right
0.225° to 1.8°
Cursor measurements Origin to target and Target to target