MDSub   Advanced underwater Assessment



At RedZone, we believe that managing wastewater assets is about managing data.  We have the leading edge products to get all the data for your system and provide the asset management, decision-support software to make that data useful.

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Leading Underwater Condition Assessment Unit

Leading Underwater Condition Assessment Unit RedZone has taken it’s world leading multi-sensor inspection (MSI) knowledge and packaged it in a long distance sonar platform. Siphons in a sewer system can present a challenge to inspect and maintain. Identification of significant areas of sediment build up within surcharged lines will aid in the planning of cost effective maintenance. Access between manholes can often span considerable distance, requiring a platform that can capture data over long ranges. Inspections in fully surcharged conditions cannot be undertaken by conventional CCTV crawlers.

RedZone’s MDSub provides an additional element to the current MD equipment, either as a stand alone product or an addition to the MD or SuperMD Profilers. Utilizing the same onboard computer and batteries packaged into a robust transportation unit, allowing for Inspections of hard to reach surcharged lines.

Conventional sonar platforms require a cable to the surface to control the equipment in the pipe. With all the modular recording components stored within the hull of the MDSub inspections are only limited by the battery life of the unit. The nature of the equipment allows for long stretches of surcharged lines to be easily inspected.

The data returned from the MDSub allows municipal engineers to ascertain the true condition of their underwater assets, identifying and presenting major faults, debris volume and location, and water level. With this information in hand, data driven decisions can be easily made to ensure  best practice maintenance and rehabilitation  of these critical pipelines.

MDSub RedZone Advantages

Deployments of up to 8,000ft / 2,400m  •  Accurate debris and water level mapping  •  Siphons and Surcharged Lines 3D presentation views   •  Volumetric debris calculations

MDSub Advanced Underwater Assessment


  • Able to be deployed autonomously
  • Long deployment capabilities
  • MSI data that can be stored and analyzed across a variety of asset management systems including ICOM3
  • 5 times more efficient (based on daily data quantities) than standard CCTV capture.




Transportation: Neutrally buoyant platform
Pipe Size: 20”- 87” / 500mm - 2200mm
Min Flow: 14” / 350mm 
Min Air Gap: 0” / 0mm (Fully Surcharged)
Battery Life: 6hr 
Accuracy: 0.4%


Debris, Flow Height, Pipe Size