An important aid to vessel navigation and collision avoidance, Sonardyne’s Navigation and Obstacle Avoidance Sonar (NOAS) images the seabed ahead of a vessel to detect potential underwater hazards. Using sophisticated bow-mounted transducers, NOAS displays water depth, sub-surface obstacles and features by creating an accurate 3D model of the underwater environment. The model is displayed relative to the vessel, overlaid on nautical charts in real-time, providing the crew with an easily interpreted image of the underwater topography the vessel is passing through.
NOAS – Navigation & Obstacle Avoidance Sonar System
What you need to know
- Reduces the risk of underwater collisions and groundings
- Ideal for commercial, military, cruise and private vessels
- Suitable for new-build or retro fit
- Easy to integrate with existing bridge systems
- Optional intruder detection capability
More about this product
NOAS System Overview & Datasheet
NOAS is a low power, forward-looking sonar that can be operated as a standalone unit or be integrated into a vessel’s navigation and integrated bridge systems.
It has been tailored to provide high resolution imagery to help detect obstacles as far away as possible, to provide enough time for crews to manoeuvre safely. The detection range of 1,500 metres and angular accuracy of 0.3º is unrivalled for this application.
The sonar scans the water column and builds a 3D model of the seabed and submerged objects ahead of the vessel.
The intuitive display informs the crew of the seabed terrain and any potential underwater hazards to a range of up to 600 metres over a 90º field of view in 2D and 3D depth modes and out to 1,500 metres in sonar mode. NOAS also has an optional operating mode for underwater intruder detection and can be used with Sonardyne’s leading diver detection sonar system, Sentinel.
NOAS can operate as an independent system or feed fully-processed sonar images into, and be controlled by, the vessel’s integrated navigation system. This allows the crew to customise the operator display to meet the specific needs of the vessel and its mode of operation. When installed on autonomous vessels or unmanned surface vessels (USV), data on detected objects and potential collision hazards can be output to an auto-pilot or autonomous control system.
When installed on autonomous vessels or unmanned surface vessels (USV), data on detected objects and potential collision hazards can be output to an auto-pilot or autonomous control system.
The NOAS hardware consists of Projector and Receiver arrays which can be mounted together or separately. Sonardyne’s highly experienced engineering team can work with owners to design bespoke mounting arrangements. Consisting of two sonar arrays that are mounted in the bow of the vessel, NOAS is designed to be retro-fitted to existing vessels as well as new builds. Comprehensive engineering support and advice is available from Sonardyne to support installation and commissioning.
|Range / Field of View||75 m, 150 m, 300 m, 600 m x 90° 2D/3D Depth Mode|
75 m, 150 m, 300 m, 600 m, 900 m, 1500 m x 90° Sonar Mode
|Operational Speed||Up to 25 knots|
|Operating Frequency||70 kHz|
|Bottom Mapping Ratio||Up to 20x water depth|
|Maximum Depth Detection||100 m|
|Operating Power||<150 Watts|
|Operating Temperature||-2 to 40°C|
|Storage Temperature Range||-20 to 55°C|
|Receiver Height x Width x Length||110 x 310 x 400.5 mm|
|Receiver Weight in Air/Water||12.0/6.0 kg|
|Transmitter Height x Width x Length||577.5 x 118 x 124.5 mm|
|Transmitter Weight in Air/Water||11.5/6.0 kg|