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3D Forward Looking Sonar (FLS) for USV Navigation United States of America
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FarSounder

3D Forward Looking Sonar (FLS) for USV Navigation

FarSounder is a leading developer of 3D forward looking sonar (FLS) technology, a valuable underwater navigation tool for USVs (unmanned surface vessels) and ASVs (autonomous surface vessels).

Their advanced underwater navigation sonar systems feature an extremely fast update rate that provides the entire 3D image within a single ping. FLS 3D data is highly reliable for the detection of hazards, obstacles and shallows, enhancing safety and navigation capabilities. The systems are also integratable with a vessel’s navigation controller.

Farsounder 3d Forward Looking Sonar for usv

Jump down to 3D forward looking sonar solutions >

Advanced Underwater 3D Detection

FarSounder’s advanced underwater sonar systems provide highly reliable detection of hazards, obstacles and shallows, enhancing safety and navigation capabilities.

Advanced Underwater 3D Detection

Argos navigation sonar systems feature unique phased array technology with an extremely fast update rate that provides the entire 3D image within a single ping, eliminating wait time. This rapid refresh also means that results are unaffected by multipath interference, roll & pitch, surface effects, and vessel motions.

Software & Integration

FarSounder offers multiple interface options for users to quickly and intuitively interact with the data collected by their Argos 3D forward looking sonars – SonaSoft™ (Windows desktop app), SonaSoft LT™ (browser app), and/or 3rd party integrations via network API.

SonaSoft™ LT user interface displaying integrated SEA.AI camera detections:

SonaSoft LT sonar data interface

SonaSoft LT displaying long range camera detections

Data can be displayed on both an intuitive 3D display and as an overlay on nautical charts including S57/S63 and C-MAP Professional charts, providing an easy-to-understand interface that allows USVs to be piloted through unknown and uncharted waters.

Anschutz Integration

Farsounder now has the ability to integrate into WECDIS/ECDIS platforms

There is also an option for projects wanting to use the bathymetric data collected by the system in survey applications. Therefore, in addition to underwater navigation, the data can be exported to QPS Qinsy survey software to monitor bathymetry and detected hazards in Qinsy. Users will be able to incorporate bathymetric data collected using FarSounder’s forward looking sonar capability into their workflow.

Argos FLS - 3D display

Real-time Underwater Awareness
Navigate safely through uncharted waters and detect unseen hazards out to 1000m ahead

Argos FLS - survey

Seafloor Mapping
Argos sonars continuously build a map of the seafloor everywhere they travel

Argos FLS - flexible installation

Flexible Installation
Argos sonars can be added to various vessel designs through a fixed installation or on a hoist mechanism

Argos FLS - UI options

User Interface Options
Various options for viewing and interacting with 3D sonar data

FarSounder’s easily-integrated navigation sonar systems are ideal for both new-build and retrofitted systems, and are suitable for vessels both with and without bulbs.

Seafloor Mapping

FarSounder’s Local History Mapping feature allows the Forward Looking Sonar to automatically build detailed maps of areas a vessel has previously traveled.

Farsounder Seafloor Mapping

As the system operates, it records and stores depth measurements, creating a growing local database that can be referenced whenever the vessel returns to the same waters. These maps can also be shared across a fleet, giving multiple vessels access to accumulated survey data. Users may additionally choose to opt in to anonymously contribute their collected seafloor data to the wider FarSounder community. In return, they gain access to an aggregated map built from other customers’ contributions, while also supporting global ocean-mapping efforts such as the Seabed 2030 initiative.

3D Sonar Solutions

Argos 350 Forward Looking Sonar System

Navigation sonar for USVs

Argos 350 auv sonar

90° up to 350m range

The Argos 350 Forward Looking Sonar System is designed for vessels ranging in length from 10 to 40+ metres . With the ability to detect hazards and obstacles at distances of up to 350 metres ahead, it is operational at speeds up to 18 knots.

Argos 350 FLS navigation sonar for USVs

The system provides USV operators with all the real time sonar information they need to confidently navigate reefs, shallow wrecks, icebergs and a variety of other challenging marine environments. In addition to obstacle avoidance, the 3D sonar data is crucial for a wide range of mapping and survey applications.

The Argos 350 can be installed in two different ways to suit the needs of a range of USV, AUV and unmanned vessels – an easy fixed installation, or a hoist installation in a 10-inch diameter sea chest.

More information: Argos 350

Argos 500 Forward Looking Sonar

Underwater sonar navigation system

Argos 500 forward scanning sonar

120° up to 200m range
90° up to 500m range

The Argos 500 3D FLS provides reliable detection of shallows and underwater obstacles, hazards and targets at distances of up to 500m in front of the vessel. It can be operated on boats moving at speeds of up to 20 knots.

The system is ideal for mid-size USVs that require high-accuracy collision avoidance capabilities, or the ability to easily and conveniently map shallow underwater environments.

Underwater sonar navigation system

Featuring a transducer with no moving parts, the Argos 500 is easily integrated into the hulls of both new-build and retrofitted vessels, and can also be built into custom third-party hoists.

DARPA NOMARS Defiant prototype vessel featuring Argos 500 system

DARPA NOMARS Defiant prototype vessel featuring the Argos 500 system (Credit: Serco North America)

More information: Argos 500

Argos 1000 Long-Range FLS

Forward facing sonar for USV navigation

Argos 1000 underwater navigation

120° up to 200m range
90° up to 500m range
60° up to 1000m range

The Argos 1000 is FarSounder’s most powerful Forward Looking Sonar system, providing reliable collision avoidance and hazard detection 1000 metres (0.5 nautical miles) in front of the vessel at operating speeds up to 25 knots.

The system is ideal for both current and future large unmanned surface vessels (USV), allowing these platforms to overcome the limitations of traditional navigation methods and allow operating crews to pilot the vessel through challenging environments with significantly reduced risk of collision.

long-range forward facing sonar for USV navigation

The Argos 1000’s transducer has no moving parts, allowing it to be easily integrated into a variety of hull shapes on both new-build and retrofitted vessels. It can also be built into custom third-party hoists to suit specific user requirements.

More information: Argos 1000 Long-Range FLS

Product comparison:

Argos 350 Argos 500 Argos 1000
Ranges 100, 200, 350 m 100, 200, 500 m 100, 200, 500, 1000 m
Field of View 90° up to 350m 120° up to 200m
90° up to 500m
120° up to 200m
90° up to 500m
60° up to 1000m
Max Operational Speed 18 knots 20 knots 25 knots
Maximum Depth Detection 50 m (165 ft)
Power Requirements 110/220 V
50/60 Hz @~80W
110/220 V
50/60 Hz @~100W
110/220 V
50/60 Hz @~120W
Angular Accuracy ~1.6°
Roll/Pitch Stabilization +/- 20°
Refresh Rate ~3 Hz to ~1 Hz
(depending upon range)
~3 Hz to ~0.75 Hz
(depending upon range)
~3 Hz to ~0.5 Hz
(depending upon range)

Learn more about FarSounder’s Argos 3D forward-looking navigation sonars

Watch an introduction to the Argos 3D Forward Looking Navigation Sonar Systems:

FLS 3D Navigation sonar
Click the image to watch the video on YouTube

Learn more about the components of the system and how they function, as well as the most common features of FarSounder’s SonaSoft™ processing software.

Products

Argos 350 3D Forward Looking Sonar

Advanced obstacle detection and navigation aid for mid-sized uncrewed vessels

Argos 500 Forward Looking Sonar System

Long-range underwater detection for mid-sized uncrewed vessels

Argos 1000 Forward Looking Sonar System

Ultra-long-range sonar for high-speed uncrewed marine navigation

Articles

Latest
FarSounder Secures Innovation Funding to Integrate AI & Target Recognition in 3D Sonar

FarSounder's new grant from the Rhode Island Commerce Corporation will accelerate the development of its machine-learning frameworks for automated maritime hazard classification

Jan 20, 2026
Enhancing Unmanned Vessel Navigation & ISR with FarSounder’s Argos 3D Sonar Technology

FarSounder’s Argos 3D Forward-Looking Sonar provides real-time underwater awareness, enhancing navigation, ISR capability, and operational coordination across unmanned and hybrid naval fleets

Jan 08, 2026
FarSounder Integrates 3D Sonar & AI Vision for Enhanced Maritime Safety

FarSounder integrates SEA.AI’s optical and thermal detections into SonaSoft LT, unifying surface and subsurface awareness by displaying AI classified objects alongside Argos 3D Forward Looking Sonar data

Dec 11, 2025
FarSounder Integration Expands Real-Time 3D Sonar Capabilities for Modern Navigation Systems

FarSounder has integrated its Argos 3D Forward Looking Sonar with Anschütz’s SYNAPSIS (W)ECDIS NX, enabling real-time subsurface data to be visualized directly within the navigation system

Nov 18, 2025
FarSounder’s Argos FLS Offer Adaptable Installation for New Builds & Refits

FarSounder’s Argos Forward Looking Sonars integrate into both new and existing hulls, offering adaptable installation methods, compact designs, and support services for diverse vessel types

Aug 29, 2025
FarSounder Argos Powers Autonomous Navigation on Unmanned Surface Vessel

FarSounder’s Argos sonar technology has been integrated into DARPA’s NOMARS vessel, advancing autonomous navigation and situational awareness in unmanned maritime operations

Jul 09, 2025
Advantages of Forward Looking Sonar: Q&A with FarSounder

Jake Palmer from FarSounder delves into the advantages of forward looking sonar, emerging trends, and highlights the environmental impact of their technology

May 13, 2025
High Level Awareness for Next-Generation USVs

Across a range of fast-evolving marine and maritime industries, FarSounder examines the importance of situational awareness in AI-based control for USVs, UUVs, and other vehicles

Mar 12, 2025
Enhancing USV Navigation with 3D Forward Looking Sonar Technology

FarSounder’s Argos series 3D Forward Looking Sonars enhance USV navigation by providing real-time underwater awareness, overcoming charting limitations, and improving safety across diverse maritime applications

Feb 18, 2025
FarSounder Joins Ocean Mapping Project Seabed 2023

The project allows for data sharing across the FarSounder customer fleet and with Seabed 2030, and aims to develop a complete map of the Earth’s seabed

Nov 15, 2023
FarSounder & NSSLGlobal Join Forces

NSSLGlobal expands product portfolio with FarSounder’s innovative 3D Forward Looking Sonar, including the recently released Argos 350 Forward Looking Sonar system which is ideal for USVs

Oct 19, 2023
FarSounder Expands IP Portfolio with Receipt of 8th Patent

This US patent expands the company’s patent portfolio for its unique sonar system and its 3D processing, and will secure its technology IP as the development continues

Jun 22, 2023
Underwater Obstacle Avoidance for Unmanned Surface Vessels

Farsounder has released the following article explaining how its Argos series of 3D forward looking navigation sonars can help meet...

Jun 06, 2023
Leadership Award for FarSounder’s Chairman of the Board

Ms. Zimmerman thanked the Blue Innovation Symposium and MOTN for the award and for being a catalyst for innovative technology in the USV market

Jan 31, 2023
FarSounder Forward Looking Sonars Integrated in Turkish USVs

FarSounder’s Argos sonars interface with the vessel navigation and control systems, providing vital information about the current state of the environment in front of the vessel and below the water line

Jan 20, 2023
Integration of 3D Forward Looking Sonars with Hydrographic Data Software

FarSounder has released the following article detailing how 3D forward looking sonars (FLS) can be integrated with hydrographic data acquisition...

Jun 15, 2022
FarSounder Receives First European Patent

The patent relates to sonar devices that integrate forward-looking sensors with down-looking echosounders

Jun 10, 2022
3D Forward Looking Sonar for Bathymetric Survey

FarSounder has released a paper, authored by software engineer Heath Henley and Vice President of Engineering Matthew Zimmerman, exploring the...

May 24, 2022
FarSounder Sonars Integrate Electronic Navigational Chart Data

FarSounder has confirmed that its 3D forward looking sonar (FLS) technology for USVs (unmanned surface vessels) now includes support for...

Oct 27, 2021
Article: Forward Looking Sonar and Autonomous Navigation

FarSounder has released an article exploring the integration of Argos  Forward Looking Sonar Systems with autonomous navigation control systems. The...

Jul 30, 2021
FarSounder Celebrates 20th Anniversary

FarSounder, a developer of unique 3D Forward Looking Sonar (3D FLS) technology for USVs (unmanned surface vessels), has recently celebrated...

Apr 22, 2021
FarSounder Develops 3D Forward Looking Sonars for USVs

FarSounder, a leading developer of 3D forward looking sonar (FLS) technology, has partnered with Unmanned Systems Technology (“UST”) to demonstrate...

Apr 19, 2021
FarSounder Launches On-Line Training

FarSounder has announced the launch of their on-line training platform. The first training program to be released in the series...

Jan 18, 2021
FarSounder Selected for NAVSEA USV, UUV Project

FarSounder has been selected as a subcontractor on a research and development project led by GMATEK Inc. The project is...

Jun 17, 2020
FarSounder Unveils a New 3D Forward-Looking Sonar

FarSounder is proud to debut a new sonar and a new name for its series of 3D forward-looking navigation sonars....

Oct 27, 2019

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Regional Offices & Locations
FarSounder United States of America 151 Lavan Street, Warwick, RI 02888 USA +1 401 784 6700 Contact Website
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