Environmental Sensors Inc. - E.S.I. Environmental Sensors Inc. distributes over 50 world-renowned marine instrumentation products from seven international suppliers. ESI also provides specialized systems for custom orders throughout North America.

Applied Microsystems - Manufacturer of oceanographic, hydrographic and environmental water quality monitoring instrumentation.

Aquatec Electronics Ltd. - Provide quality data logging and acquisition tools, instrumentation, acoustic telemetry systems and software to the marine, fisheries, oil and offshore industries.

Aquatrak Corporation - Manufacturer of liquid level determination for measuring tides, sea state, river stages, ground water, head and tail water, and tank ullage. Proven technology characterized by accuracy (±3 mm), reliability, versatility, and durability.

Ashtead Technology Ltd - Oceanographic, hydrographic, survey equipment and ROV sensor rental.

Axys Environmental Systems - Manufacture environmental data acquisition systems with a focus on moored buoys for routine weather and sea state monitoring. Also build specialized buoys for research and are continually developing new sensors, power supplies and other buoy components.

Benthos, Inc. - Specializes in remote sensing technology for harsh environments. Founded in 1962 as a supplier of oceanographic products for the nearby Woods Hole Oceanographic Institution, the company designs and manufactures oceanographic and robotic systems for research, exploration and defense.

Bowes Engineering - Developers of the C Box - a modular enclosure with a unique design that can be used underwater or in harsh environments and is an ideal solution for housing prototype equipment.

Brightwaters Instrument Corporation - Manufactures GPS/DGPS and Argos drifting buoys, environmental telemetry systems, hydrographic instruments, equipment relocation products. Offers custom and semicustom work and OEM design services.

Brooke Ocean Technology Limited - Provides systems engineering, R&D services and hardware to the marine science community. Their speciality is the development of innovative equipment and systems to operate in harsh marine environments.

Chelsea Instruments Ltd - Market a range of high precision oceanographic instrumentation which is in use in all oceans of the world.

Deep Ocean Engineering - Provides service to and manufactures remotely operated vehicles (ROVs), robotic and manned equipment for harsh environments.

Campbell Scientific, Inc. - Automated weather stations for land or ocean. Compatible with most meteorological and hydrological sensors. Battery and solar panel provide long-term, unattended operation. Stations transmit data by satellite, radio, and cellphone.

CLS: Collecte Localisation Satellites - Platform location and scientific data collection by Argos, satellite orbit determination and platform location by Doris, space oceanography data processing for TOPEX/POSEIDON and ERS.

Duncan and Associates - Designers, manufacturers and suppliers of limnological, hydrobiological and oceanographic sampling and monitoring apparatus, all manufactured to an Assured Standard, tested and proven in the field.

EdgeTech - Develops, manufactures, and markets sensing devices for marine applications including sonar systems for underwater, seafloor and object imaging and sub-bottom profiling, and communication and control products to locate, position communicate and activate/control devices underwater.

Marine Sonic Technology Ltd - Produces a low cost side scan sonar system called Sea Scan PC® which sets the standard for high quality performance and offers a unique ability to locate objects underwater with near photographic quality.

Falmouth Scientific, Inc. - An international leader in the development and manufacture of high quality precision oceanographic instrumentation.

Flotation Technologies - A world leader in the design and manufacture of subsurface buoyancy and mooring products since 1979.

Geological & Marine Instrumentation (GMI) - Developers and producers of solutions and products within the fields of process control, measurement techniques, and in particular marine and environmental and oceanographic monitoring.

Hugrun ehf - Manufacturers of underwater data acquisition instruments and loggers.

General Oceanics, Inc. - The world's leading supplier of oceanographic, coastal, freshwater and air sampling instruments technology. In business since 1966.

International Industries, Inc. - Manufacturers' representative and distributor headquartered in the Washington, D.C. metropolitan area of the United States (Annapolis, Maryland). Provide the products of leading domestic and international hydrographic and oceanographic firms in the marine technology industry.

KC Denmark - Supplies all types of field / laboratory research equipment for limnology, oceanography and hydrobiology.

Klein Associates Inc. - Specialist makers of side scan sonar imaging systems.

The MacArtney Group - Specializes in the engineering and supply of underwater oceanographic equipment.

Marimatech - Manufacturers of marine surveying and monitoring instrumentation.

Ocean Sensors, Inc. - Specializes in the development of innovative ocean measurement instrumentation and systems. Developers of lightweight Conductivity/Temperature/Depth (CTD) instruments for use in ocean profiling, moored and shipboard data logging applications.

W.S. Ocean Systems Ltd - An independent, privately owned company formed in 1982. The emphasis is on the provision of high quality oceanographic products backed by expert technical support.

Ocean Innovations - Represents some of the leading manufacturers of underwater equipment and marine technology.

Ocean Instruments, Inc. - Oceanographic products including multicorers, box corers and bongo nets.

Oceaneering International, Inc. - An advanced applied technology company that provides engineered services and hardware to Customers who operate in marine, space, and other harsh environments.

Oceanographic Company of Norway ASA (OCEANOR ) - Specialising in delivering integrated real-time environmental monitoring and information systems for oceans, coastal areas, rivers, lakes, groundwater and soil.

Oceanscan Limited - One of the leading equipment and personnel rental companies servicing the world-wide hydrographic survey and ROV.

OceanScience Group - Manufacture and sales of oceanographic buoys, floats, subsurface buoys, marker buoys, syntactic foam, buoy lights and wave gauges.

OceanTools Ltd - Products for the professional offshore ROV (Remotely Operated Vehicle) and survey markets including true north seeking fibre optic gyro compass systems.

Open Seas Instrumentation, Inc. - Manufacture oceanographic equipment (nets and corers) for the international scientific community.

Richard Brancker Research Ltd. - An electronic engineering company providing precision oceanographic equipment for scientific research and monitoring. Products include autonomous, submersible data recorders, monitors and sensors.

RD Instruments - World leader in water current measurement products (ADCP) and software which is used in a variety of oceanographic applications, from deep ocean navigation, oil platform station-keeping to coastal monitoring, ports and harbor safety to lake and river discharge measurements.

Sea-Bird Electronics, Inc. - Largest manufacturer of marine instruments for measurement of salinity, temperature, pressure, dissolved oxygen, and related oceanographic variables. Major products include Conductivity/Temperature/Depth (CTD) profilers, multibottle in-situ water samplers, moored CT recorders, and wave/tide recorders. Customers include research institutes, engineering firms, and navies throughout the world.

Sea-Gear Corporation - Manufactures a complete line of standard and custom plankton nets and accessories for marine biological/oceanographic research.

Seimac Limited - ARGOS Platform Transmitters Terminals - World's largest manufacturer for OEM application development.

Sequoia Scientific, Inc. - Building on its sponsored research, Sequoia Scientific produces optical instruments and software, specifically designed for oceanographic use.

Shark Marine - Manufactures and supplies remotely operated vehicles, camera systems and oceanographic equipment. Also provides consultant services with world-wide technical experience.

Sippican, Inc. - Design, development, and manufacture of oceanographic instrumentation for the scientific communities and navies of the world.

SiS - Sensoren Instrumente Systeme GmbH - Sensors, instruments, systems and calibration equipment for oceanography, marine sciences and environment.

SonTek - Makes water velocity measurement sensors - ADCP/ADP acoustic doppler current profilers, ADV velocimeters, DVL speed logs, Argonaut current meters, ultrasonic flow meters and other instruments.

Sound Ocean Systems, Inc. - SOSI provides quality marine systems and components including marine winches, launch and recovery systems, tow fish and seafloor salvage systems.

Specialty Devices, Inc. - Designs and builds bathymetric, oceanographic, and meteorological data acquisition systems including the BLASS Bathymetric survey system, IDS depthsounder, data buoys, towfish, and tailbuoys.

Star-Oddi Marine Devices - Manufacturer of electronic archival tags for fish and marine animal tagging. Data loggers and recorders for measuring temperature, depth and salinity.

Technocean, Inc. - Manufacturer of oceanographic equipment, primarily Argos-based drifting buoy systems. Argos-certified PTT manufacturer.

Thetis - Measurement and equipment rental service in the field of oceanography and meteorology.

Webb Research Corporation (WRC) - Designs and manufactures scientific instruments for oceanographic research and monitoring. Founded in 1982, WRC specializes in neutrally buoyant, autonomous drifters and profilers, and moored underwater sound sources.

WET Labs, Inc. - Manufactures underwater optical sensing instruments for physical, biological, geological, and chemical characterization of the marine environment.

Woods Hole Instrument Systems Ltd. - WHISL designs, manufactures and markets instruments and systems for monitoring a wide variety of marine environmental parameters.

McLane Research Laboratories, Inc. - Pioneers of time-series oceanographic and environmental monitoring instrumentation since 1983. Our goal is to enable investigators to achieve their research and scientific goals by providing advanced, cost-effective instrumentation and design services.

METOCEAN Data Systems Limited - Manufacturing and development company for state-of-the-art oceanographic and meteorological data acquisition and telemetry systems for severe environments.

Mooring Systems Inc. - Designs and fabricates oceanographic surface and subsurface buoys, trawl resistant bottom mounts, provides all mooring components including wire rope and marine hardware for shallow and deep sea systems.

NORTEK AS - Measurement solutions in all the world's waters. Suppliers of acoustic instruments for measuring water motion, software for realtime operation in the field or lab and analysis software for visualisation, presentation and reports.

NortekUSA - Acoustic doppler current meters, current profilers and flow meters, for the ocean, rivers and open channels, including Aquadopp current meters, Vector ADVs and ADPs.

Northwest Marine Technology, Inc. - Benign fish tags and tagging techniques using NMT fish tags including fish tagging scientific references.

Precision Measurement Engineering - Design and manufacture products for field and laboratory research that range from antennas that transmit on the ARGOS frequencies, to microstructure profilers that measure high resolution of conductivity, temperature, dissolved oxygen, chlorophyll, and PAR.

Pro-Oceanus Systems, Inc. - Manufacturers of Ultra-Stable dissolved oxygen, nitrogen and total dissolved gas sensors.

Cetacean Research Technology - Underwater and bioacoustics instumentation and consultation.

Aquamatic - Water quality measurement systems for oceanographic and environmental applications in shallow waters.

Challenger Oceanic - Instrument development and design of oceanographic chemical sensors and sampling systems for international research related to climate change and pollution.

Technicap - Suppliers of marine sampling instrumentation including sediments traps, water samplers, buoys, chlorophyl incubators, frames and pumps.

Oceanor - Offers an extensive stock of metocean instruments.

ORE Offshore Division - Specialized hydro-acoustics company in Falmouth, Massachusetts and Houston, Texas. Builds the Trackpoint II and LXT underwater acoustic tracking and navigation system, and sells and leases equipment for marine surveys and oceanographic research.

Valeport Limited - Manufacturer of oceanographic and hydrometric instruments including current meters, wave, water level and tide recorders, sound velocity profilers, CTDs, multiparameter instruments and accessories.

Coastal Leasing, Inc. - Manufactures, leases and sells oceanographic, environmental and meteorological instrumentation for scientific research worldwide.

Ohmex Ltd - Supplier and manufacturer of portable echo sounder, tide gauge, environmental data collection and ROV systems.