Underwater
submerged in water.
See Also: Water, Water Quality, Water Meters, H2O, Wastewater, Water Spray, Water Leak, Water Flow, Sea, Subsea, Autonomous Underwater Vehicle
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Product
Modular Connectorized Distribution Unit
MCDU
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The Modular Connectorized Distribution Unit (MCDU) is a modular family of factory-qualified subsea distribution units that provide oil-filled, pressure-balanced junctions for flexible underwater configurations.A new configuration has recently been introduced with a lighter, more cost-effective frame, highly visible ROV lifting handles, and wide openings to facilitate installation and removal of the housing. The compact frame design negates the need for lifting wires, making it easy for ROVs to install and retrieve the unit from the sea floor.
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Product
Sensors
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We design, develop and produce state-of-the-art SIGINT sensors that seek, exploit, identify, and locate sources of RF energy, underwater sound, light, heat and other complex phenomena. These sensors recognize threats, gather intelligence, and allow our customers to make informed, strategic response decisions.
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Product
Hydrophone
RESON TC 4040
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The TC4040 is an ideal standard reference hydrophone for calibration of transducers, hydrophones and underwater acoustic measurement systems.The TC4040 offers flat frequency receiving response over a wide frequency range and the relatively high transmitting sensitivity makes it very useful within many areas of underwater acoustic research, tests and measurements.
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Product
Spherical Underwater Quantum Sensor
LI-193
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The LI-193 Spherical Quantum Sensor measures PAR in air or underwater from all directions at depths up to 350 meters. This sensor is useful for studies of phytoplankton, which uses radiation from all directions. The measurement is referred to as Photosynthetic Photon Flux Fluence Rate (PPFFR) or Quantum Scalar Irradiance.
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Product
Small Tide Recorder
miniTIDE
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The Valeport miniTIDE is a small Tide Recorder, designed for short-term underwater deployments, ideal for academic studies.
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Product
Cable Identification System & Cable Phasing System
Impulse Phaser
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With the introduction of direct buried, solid dielectric primary voltage cables, the IMPULSE PHASER has come into greater prominence for safely and accurately identifying buried primary cables, including jacketed neutral designs. The IMPULSE PHASER has been accurately used on paper insulated, lead covered feeders in excess of 20 miles and even on submarine cable 300 feet underwater.
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Product
Hydrophone
RESON TC 4014
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The TC4014-5 broad band spherical hydrophone offers a very wide usable frequency range with excellent omnidirectional characteristics in all planes. The overall receiving characteristics makes the TC4014-5 an ideal transducer for making absolute underwater sound measurements up to 480kHz. The wide frequency range also makes the TC4014-5 perfect for calibration purposes, particularly in higher frequencies.
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Product
Sonar systems
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For surface ship applications Ultra has developed a comprehensive, fully-integrated sonar system, comprising both on-board sonars such as hull-mounted and towed arrays. This modular system fuses data from own-ship and off-board sensors to build a complete underwater tactical picture delivering a bi-static sonar capability.
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Product
Wide Angle High Definition Underwater Camera
Surveyor-WAHD
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The Surveyor-WAHD underwater camera is designed to provide a 14% increase in angle of view, from the previous WAHD camera, whilst remaining compact and very competitively priced. It is ideal for ROV inspection tasks, scientific observation and broadcast applications.Video output is available as component (Y/PbPr), utilising standard connectors or HD-SDI on hybrid 75 Ω coaxial or fibre optic connectors, a composite video output is also available.
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Product
Subsea Data Logging Tensile Link
SUBD-3.0
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The Subsea Data logging Tensile Link is a robust Tensile Link used for measuring loads on subsea mooring lines, underwater deployments and other similar applications. The instrument measures and records the applied load using an internal data logger which was developed by DLM Design Engineers.
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Product
Doppler Velocity Logs
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NavQuest is a line of Doppler Velocity Logs manufactured by LinkQuest Inc., a company renown for its innovation, capability and product quality. The NavQuest Doppler Velocity Logs are ideal for precision navigation and positioning of underwater vehicles. With their capability for fast and accurate velocity output, significantly longer range and smaller minimum altitude when compared against similar products, the NavQuest Doppler Velocity Logs are the excellent choices for underwater precision navigation applications.
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Product
Underwater Quantum/PAR Sensors
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Photosynthetic radiation is essential for the growth of the photosynthetic organisms such as corals. The wavelength range from 400 to 700 nm is PAR (Photosynthetically Active Radiation) or PPFD (Photosynthetic Photon Flux Density). Apogee quantum/PAR sensors are calibrated to measure the number of photons of light across this range.
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Product
Data Loggers
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Scientech Technologies Pvt. Ltd.
Onset data loggers and weather stations are used in a broad range of indoor, outdoor and underwater applications.
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Product
Boat Mount with Pan & Tilt 2D Forward Looking Sonar
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Deployed from a patrol boat, Teledyne BlueView's BV3100 is ideal for search and recovery operations, dive team situational awareness, and diver vectoring. It is also an effective means of harbor bottom inspection as well as diver and underwater IED detection.The BV3100 uses Teledyne BlueView's 2D forward looking sonar mounted to a digital pan and tilt system to deliver clear, streaming imagery during both confined and wide area searches. This real-time imagery is produced whether moving or stationary, even in zero visibility water conditions. The BV3100 can be used alone or as a complement to side scan sonar by allowing the user to reacquire and guide divers to targets found in side scan imagery.
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Product
Rechargeable Submersible Strobe up to 6000m
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The Teledyne Bowtech ST6K, Xenon submersible strobes are self-contained, compact, high intensity xenon beacons, designed for use as a visual aid to locate submersible vehicles or instrumentation packages when they surface for recovery. They can also be used to mark underwater objects, vehicles, divers or work sites.
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Product
Integrated USBL Acoustic Tracking and Communication Systems
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The TrackLink systems are the world's best selling USBL acoustic tracking systems with fully integrated high speed acoustic communication capability. Capitalizing on its benchmark Broadband Acoustic Spread Spectrum (BASS) technologies, LinkQuest provides the end users with solutions for underwater tracking and communication at sharply reduced cost and increased robustness. An extensive line of models are available to suit the users' specification and budget constraint.
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Product
Altimeter
VA500
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The VA500 Altimeter delivers a new solution for the ROV, AUV and Hydrographic community to the problem of underwater positioning.
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Product
Sound Velocity, Temperature and Pressure for Underwater Vehicles.
UV-SVP
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Designed for Underwater Vehicles where space is at a premium, the UV-SVP is based on the Valeport miniSVS. Incorporating Valeport’s class-leading time of flight sound speed sensor, a PRT temperature sensor and a 0.01% pressure sensor in a compact package weighing just 750 grams (in air), the lightweight titanium housing gives a depth rating of 3000m. A wide range (9-30V DC) isolated power supply and RS232 communications complete the package.
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Product
Hydrophones
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Piezo is a critical element in producing a hydrophone for military and commercial underwater listening applications. Hydrophones utilize piezoelectric elements to detect sound pressure waves produced by underwater vessels, animals, and the environment. Hydrophones must have a flat frequency response that is proportional to the magnitude of the sound pressure wave. CTS piezo elements provide this critical function in hydrophones by providing excellent frequency response and high coupling factors necessary in hydrophone applications. CTS materials provide excellent electrical properties for hydrophone applications while allowing the ability to form the piezo element to the desired mechanical structure for the hydrophone.
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Product
Underwater Bioluminescence Assessment Tool
UBAT
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Provides a better understanding of spatial and temporal complexity in coastal and ocean ecosystems
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Product
Radiometer
HyperOCR
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Hyperspectral ocean color radiometer (HOCR) sensors are designed for applications where performance, size and power are key constraints. HOCRs can be mounted on real-time profilers, moored on autonomous deepwater buoys, installed in autonomous underwater vehicles, as well as on ships and airplanes for above-water optic applications. HyperOCR sensors are fully digital optical packages, providing 136 channels of calibrated optical data from 350–800 nm.
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Product
FlowQuest Acoustic Current Profilers
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FlowQuest is a line of Acoustic Current Profilers manufactured by LinkQuest Inc., a company renown for its innovation, capability and product quality. The FlowQuest current profilers are ideal for measuring currents and flows in oceans, harbors, lakes and rivers. With its capability for significantly longer range, standard deepwater depth rating and seamless integration with third-party sensors and LinkQuest acoustic modems, the FlowQuest system is not just a current profiler. It also serves as a focal point for your underwater deployments.
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Product
Naval Navigation
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In today’s high-risk operational environments, having a clear, accurate view of the maritime domain is critical. With proprietary technologies for GNSS-independent navigation, secure data management, and real-time insights, Exail offers a unique, integrated navigation solution for comprehensive situational awareness, both on the surface and underwater. This approach gives naval forces the resilience, safety, and operational edge needed to navigate dynamic conditions and enhance mission effectiveness.
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Product
Subsea Imagery
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With only 24% of the ocean floor being mapped with a submetric resolution, the ocean’s seabed is Earth’s last frontier. Mapping the seafloor, protecting marine habitats, hunting for wrecks, studying underwater geo-hazards…Those are challenges for the years to come.It is to help in that field, that Exail has developed a large range of sensors designed to address the full spectrum of subsea imagery applications, from sub-bottom profiling and seabed mapping to water column monitoring.
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Product
AUV | ROV Sensors: AUV | ROV Sensors
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Autonomous and remotely operated underwater vehicles are rapidly evolving to fill scientific niches, many with capabilities otherwise unattainable through traditional manned research at a fraction of the operating cost. Sea-Bird Scientific offers a line of sensors uniquely designed for integration with various unmanned underwater vehicles, expanding data potential and opening new doors for unique research opportunities. While Sea-Bird Scientific originally designed most sensors for stand-alone applications, we have redesigned and miniaturized popular product lines meet the specific operational requirements of unmanned research platforms: a 1 kg CTD can now replace a 10 kg CTD while maintaining the same accuracy, and a precision optical sensor can now take up half the space while recording the same data channels.
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Product
Acoustics
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Chelsea Technologies specialises in the design of underwater transducer technology. With over 45 years’ experience, our comprehensive range of standard transducers are ideal for a wide range of applications from aquaculture to defence. Our in-house acoustics experts can also help with custom products and design projects.
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Product
Underwater LED Lights, 2100, 3200, 4200, or 5000 Lumen
LED-N-Series
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The Teledyne Bowtech LED-N-Series underwater LED lights are available with 2100, 3200, 4200 or 5000 lumen outputs and various colour temperature options. These lights feature the latest LED technology and are now a real alternative to incandescent lamps.Due to Teledyne Bowtech's continued history of innovation, these lights feature the latest and best underwater LED lighting technology available.
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Product
Miniature High Density (MHD) Metal Shell Connectors
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A high density (up to 96 contacts) miniature waterproof electrical connector keeps weight to a minimum and fits into compact spaces. Well suited for underwater vehicles such as ROVs, AUVs, and UUVs, where space and weight are typical design constraints. Durable materials allow reliable connectivity with low risk of operational failure.
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Product
Mechanical Coating Thickness Gauge
211
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This is one of the most popular mechanical coating thickness gauges in the world.Factory calibrated - with user calibration adjustmentFoils supplied to check calibration on siteIdeal for cold surfaces and underwater useSmall and portable with an accuracy ±5%The “V” grooved base, ideal for pipeline inspectionAvailable in either Metric or Imperial versions, the Elcometer 211 measures coatings up to 6mm (250mils)
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Product
Ultrasonic Transducers
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With a range of standard casings, we produce customised PVdF or ceramic transducers tailored to your specific needs. We have developed custom transducers for a wide range of applications and environments from underwater to use in CT & MRI systems, covering frequency range from 500KHz to 50MHz and above.





























