Ultra High Definition

The ultimate high resolution StarFish side scan sonar for extreme image definition and target detection. Based on the popular and proven 450F design, the StarFish 990F uses high frequency 1MHz acoustic 'chirped' pulses with a 0.3° horizontal beam width to produce the most defined and clear images from any StarFish system.

With a 35m range capability on each channel (giving 70m total swathe coverage), the StarFish 990F is the ideal tool for high resolution surveys in ports & harbours, academic research, inland waterways such as rivers and canals, and excels when used for SAR (Search And Recovery/Rescue) operations.


Advanced Design

The compact hydrodynamic full body three-fin design improves stability of the sonar while it’s being towed which in-turn helps improve the quality of images it produces. The sonar also incorporates an inline connector to allow the cable to be swapped or replaced on site. Additional cable lengths are also available to help you choose the best towing solution for your needs.

Designed to be 'Plug and Play', connecting to your Windows PC or laptop via a USB connection, the StarFish 990F comes with software to allow the capture and recording real-time images from the seafloor below, making seabed imaging easy for everyone.


Compact, Rugged & Portable

Measuring less than 15 inches long the StarFish 990F sonar is small enough to be transported in your rucksack. Lightweight and quick to deploy by hand, the 990F towed system is independent of the boat requiring no fixed installation which makes it easy to transport and operate from any vessel. The StarFish Peli Case provides a rugged and watertight method for transporting and storing your StarFish system.

Marine Distribution & Consulting offers the full range of Blueprint Subsea products. Please do not hesitate to contact us for detailed information to  find the right Side Scan Sonar solution for your application!


System Setup

StarFish 990F sidescan sonar set up

The Sonar connects to the Top Box. The Top Box then connects to the power source and any Windows based PC or Laptop via a USB connection to display, record and playback digital sonar images using StarFish Scanline software.

  1. Starfish 990F Side Scan Sonar "Towfish" Transducer Head
  2. Starfish 990 Top Box (includes USB and power cables)
  3. 20m cable (included with StarFish 990F Sonar)
  4. AC Mains power adapter (supports 110V and 240V)
  5. Customer supplied DC power supply 9V-28V (i.e. battery)
  6. Customer supplied PC or Laptop (with at least 1 free USB port and Windows XP, Windows Vista or Windows 7)
StarFish 990F sidescan sonar deployment



  • 0.3° acoustic beam widths for high definition.
  • Easily transportable - fits in your rucksack.
  • Plug & play USB interface to any PC, with simple & intuitive software.
  • Easily powered from almost any source.
  • High visibility red colour to aid location & tracking.



Customer images captured with the StarFish 990F sidescan sonar...

sonar_image_Bluepint_Subsea_990f_1 sonar_image_Bluepint_Subsea_990f_2 sonar_image_Bluepint_Subsea_990f_3 sonar_image_Bluepint_Subsea_990f_4 sonar_image_Bluepint_Subsea_990f_5 sonar_image_Bluepint_Subsea_990f_6 sonar_image_Bluepint_Subsea_990f_7



Length 378mm (14.9")
Width 110mm (4.3")
Height 97mm (3.8")
In Air 2.0kg (4.4lbs)
In Water 1.0kg (2.2lbs)
Depth Rating...
Body 50m (164ft) max
Operating Frequency 1000kHz nominal
Operating Range 1m to 35m (3ft to 115ft) on each channel providing max 70m (230ft) total coverage.
Operating Mode CHIRP pulse compression
Pulse Length 100us typical
Towing Cable...
Length 20m (65ft)
Breaking Strain >150kg (330.7lbs) Kevlar reinforced
Minimum Bend Radius 30mm (1.2")
Construction Black polyurethane jacketed with internal Kevlar reinforcing member
Body Reinforced red polyurethane rubber
Vertical Beam Width 60° nominal (@ -3dB signal level)
Horizontal Beam Width 0.3° nominal (@ -3dB signal level)
Arrangement Dual fin mounted transducers with 30° down angle from horizontal.
Transmit Source Power Level <210dB re 1µPa @ 1m





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