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Undersea Warfare

L3Harris provides leading-edge C4ISR sustainment and undersea solutions in the areas of sensors, power and seabed systems. Its undersea warfare systems include integrated, superior, multi-domain sensor capabilities, acoustic/undersea systems & sensors, seabed systems, unmanned underwater vehicles and imaging systems on naval submarine programs.

L3Harris is the world’s largest submarine imaging system provider with imaging masts on all classes of U.S. Navy submarines, delivering precise, high-resolution optics, and integrated sensor packages. Outside the U.S., L3Harris has submarine imaging systems in-service on the widest variety of submarine classes – from German-manufactured U209s to Russian-manufactured “Kilo-Class,” Netherlands Walrus, Spain S-80 and even the legacy Romeo-Class submarines in service with the Egyptian Navy.

L3Harris continues to outfit leading navies with proven fixed and mobile acoustic surveillance technology to keep oceans safe, delivering real-time situational awareness and targeting.

Featured Capabilities

Marine Cable Installation Services

Cabled Ocean-Observing Systems

IVER Suite of Unmanned Underwater Vehicles

Iver Suite of Autonomous Underwater Vehicles

Submarine Total Ship Monitoring

Submarine Total Ship Monitoring

Submarine Mast Raising Equipment

Submarine Mast Raising Equipment

Artistic rendering of a SCEPS-powered torpedo.

Undersea Propulsion

Delivering Detection

Delivering Detection

In order to efficiently keep surface ships safe from increasing underwater threats, navies around the world are quickly adapting with advanced sensing capabilities. Surface combatants need help tackling the growing and increasingly technically advanced undersea threats. Whether it is a submarine or an advanced sea mine, many countries are making significant investments in state-of-the-art technologies that can cause significant harm to surface fleets.

L3Harris’ solutions, like the Low-Frequency Active Towed Sonar (LFATS), a variable-depth sonar usually mounted on small surface vessels, was designed to specifically detect threats like torpedoes and alert the crew of an incoming menace. The company's LFATS system is used on ships to detect, track and engage all types of submarines. L3Harris designed the system to perform at a lower operating frequency against modern diesel-electric submarine threats.

Additionally, L3Harris also produces a Helicopter Long-Range Active Sonar (HELRAS) which provides operators with a significantly more capable, interoperable and versatile weapon system that reduces total operating costs by minimizing the time needed to execute an Anti-Submarine Warfare (ASW) mission. L3Harris’ next-generation towed sonar systems also offer a significant reduction in sensor power, internal component diameter, bend radius and production costs.

L3Harris prides itself on designing, developing and manufacturing undersea sensors for surveillance and detection. The company has provided undersea sensor systems solutions since 1991 and is well-known for the production of the TB-29C and TB-34A towed array sonars, as well as providing integrated solutions for total ship monitoring, re-deployable undersea surveillance sensors, surface ship torpedo defense sensors, submarine hull array electronics and acoustic sensors for unmanned vehicles.

L3Harris’ sonar technology and solutions are delivering exceptional detection, localization and tracking in compact, lightweight packages.

Related Capabilities

LFATS VDS | Low Frequency (1.38 kHz) Variable Depth Sonar System

Low-Frequency Active Towed Sonar

HELRAS - Helicopter Long-Range Active Sonar (1.38 kHz)

Helicopter Long-Range Active Sonar

Firefly | Mid-Frequency Dipping Sonar system (10 kHz)

AQS-18F – Next Generation Anti-Submarine Warfare Sonar

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Delivering Integrated Solutions that Redefine the Maritime Domain

All Undersea Warfare Capabilities

L3Harris GPM 300 acoustic general purpose modem

Acoustic General Purpose Modem

Firefly | Mid-Frequency Dipping Sonar system (10 kHz)

AQS-18F – Next Generation Anti-Submarine Warfare Sonar

CS East AS View Control System

ASView™ Control System

Marine Cable Installation Services

Cabled Ocean-Observing Systems

Communication Using Underwater Ultrasonic Wireless

Communication Using Underwater Ultrasonic Wireless (CUUUWi)

US Aircraft Carrier

Control Consoles, Workstations and Panel Boards

Custom ASVs

Custom ASV

Data Links - Network-Enabled Tactical Link System (NETLS)

Data Links - Network-Enabled Tactical Link System

Vessels at Sea

Diversified Marine Services

L3Harris ES-3601U - Submarine Radar ESM System

ES-3601U - Submarine Radar ESM System

L3Harris ES-3701U - Precision Submarine Radar ESM System

ES-3701U - Precision Submarine Radar ESM System

Fuzing & Ordnance Systems

Fuzing and Ordnance Systems

HELRAS - Helicopter Long-Range Active Sonar (1.38 kHz)

Helicopter Long-Range Active Sonar

Hydrographic Mission Systems Support

Hydrographic Mission Systems Support

IVER Suite of Unmanned Underwater Vehicles

Iver Suite of Autonomous Underwater Vehicles

Iver3 EP Open System UUV

Iver3 EP Open System AUV

Iver3 Standard System UUV

Iver3 Standard System AUV

Iver4 580 UUV

Iver4 580

Iver4 900 UUV

Iver4 900 AUV

LFATS VDS | Low Frequency (1.38 kHz) Variable Depth Sonar System

Low-Frequency Active Towed Sonar

Live iterations for Palehorse Troop

M-Code Navigation Solutions

M-Code Type II

M-Code Type II

US Navy Vessel

Marine Power Distribution

L3Harris Maritime Test Tank Water thumbnail image

Maritime Test Tank

Model 980 Active Low-Frequency Towed Sonar (ALOFTS)

Model 980 Active Low-Frequency Towed Sonar

Model 997 Hull-Mounted Sonar (HMS)

Model 997 Hull-Mounted Sonar

Modular Open Loop Sweep (MOLS) System

Modular Open Loop Sweep System

Orion VDS | Compact Mid-Frequency (3 kHz) Variable Depth Sonar System

Orion – Variable Depth Sonar System

PASOR Mobile Tracking Range

PASOR Mobile Tracking Range

PASOR Portable Acoustic Range

PASOR Portable Acoustic Range

Picasso

Picasso

Shore Based Sonar Training (SBST) System

Shore Based Sonar Training System

Snorkel System and Gas Exhaust Valves for Submarines

Snorkel System and Gas Exhaust Valves for Submarines

Static Automatic Bus Transfer (SABT)

Static Automatic Bus Transfer

Submarine Mast Raising Equipment

Submarine Mast Raising Equipment

Submarine Total Ship Monitoring

Submarine Total Ship Monitoring

Submarine Towed Arrays

Submarine Towed Arrays

Strategic Systems

Trident II D5

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ճ۸4™

Unmanned Surface Vehicles (USVs) for Minehunting

Uncrewed Surface Vehicles (USVs)

Artistic rendering of a SCEPS-powered torpedo.

Undersea Propulsion

Undersea Warfare Tracking/Training Range (UTR)

Undersea Warfare Tracking/Training Range (UTR)

Unmanned Conversions

Unmanned Conversions

Unmanned Vehicle Sensors

Unmanned Vehicle Sensors

L3Harris Vigilant family of digital electronic support measures (ESM) solutions

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Weapon Handling Systems and Storage Systems for Surface Combatants

Weapon Handling Systems and Storage Systems for Surface Combatants

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