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Marine Electronics

2018:  FEB

September 2017 Issue

Magnetic Crawler for
Tank Inspection

Petrospect Inspection Est. in Saudi Arabia chose Inuktun’s MaggUT Marine robotic vehicle to perform remote visual inspections and ultrasonic testing and to clean away the heavy sediment often found on the bottom of steel storage tanks. Inuktun delivered a custom solution miniature magnetic crawler that combined a heavy-duty cleaning brush with a Crystal Cam Sapphire inspection camera and a standard Olympus ultrasonic thickness gauge.

AELCloud Runs Analysis,
Simulation for Fugro

The subsea engineering analysis consultancy AgileTek has completed the first use of its AELCloud system on a project for Fugro. The work required a substantial number of simulations of subsea power cable installation operations to be performed to verify procedures, component sizes and weather windows. Some of the results were required at critical milestones within the larger project, and AELCloud allowed AgileTek to scale server capacity on demand to meet these deadlines.

AELCloud is an online platform developed by AgileTek which runs analysis and simulations on both cloud and the client’s local servers. It drastically reduces the time traditionally needed to run simulations. On this subsea installation project alone, AgileTek ran approximately 27,000 OrcaFlex simulations which equated to around 57,000 hours, or just over six years of simulation time. AELCloud processed a total of 1.5 billion data points for critical metrics in the system.

3D Optical Models Underwater
Through New Imaging System

The Advanced Imaging and Visualization Laboratory (AIVL) at the Woods Hole Oceanographic Institution (WHOI) has developed a new multifunction underwater imaging system capable of generating ultrahigh-definition television (UHDTV) video, 2D mosaic imaging and 3D optical models of seafloor objects and environments. The technology is being field tested on several submerged shipwreck sites in both the U.S. and Europe. The technology will enable rapid production of 3D optical volumetric models of the seafloor—images that scientists can spin to view from all sides and zoom in on to visually explore around and inside objects or ocean environments. These models are helping to transform the way scientists examine study areas.

Developed by AIVL in collaboration with the National Park Services Submerged Resources Group and Marine Imaging Technologies, the near-millimeter accurate 3D models are built using digital optical imagery, rather than lasers.

EchoBoat Surveys
Levees in California

The Seafloor Systems EchoBoat USV is on the job for the California Department of Water Resources and R.E.Y. Engineers surveying the fragile delta region levee system. The EchoBoat is integrated with a Norbit iWBMSc multibeam echosounder and a Velodyne Puck LiDAR sensor. The laser-multibeam combination enables scanning the levee structure for integrity above and below the water line simultaneously. Since 1900, there have been more than 160 levee failures in the Sacramento-San Joaquin River Delta.

Wide-Ranging Inventory
For Search Needs

Commercial dive companies, law enforcement, search and rescue dive teams, and wreck hunters all rely upon a carefully chosen inventory of highly technical equipment to accomplish their goals. JW Fishers Mfg. specializes in the manufacture of a diverse line of underwater search equipment to provide operators with a one-stop shop for their search needs. Among the inventory are JW Fishers’ handheld underwater metal detectors that can locate all metals. A diver using this equipment can detect any buried object. Boat-towed metal detectors allow the operator to search large areas in a short amount of time. ROVs can be used to capture and record video footage underwater. Sonar systems such as side scan sonar and sector-scanning sonar image the ocean floor, even in black water. When searching primarily for ferrous objects (iron and steel), a magnetometer has a greater detection envelope over a traditional metal detector. Pingers and receivers provide the ability to mark and relocate underwater sites with ease.

Wave Glider Hot Spot
Serves as Communication Hub

The Liquid Robotics Wave Glider Hot Spot system comprises several wireless modems that serve as a communication hub between AUVs, seafloor instrument packages and instruments onshore. This facilitates the transfer of information more quickly and less expensively than traditional methods.

So far, the Hot Spot has been used in several projects. It provided acoustic communication support to the Coordinated Canyon Experiment for timely characterization of eight turbidity events, as well for making remote repairs to the deployed software. The Hot Spot provided acoustic communication and geolocation support to the Benthic Rover (part of Ken Smith’s Pelagic Benthic Carbon Coupling project). The Hot Spot was also used during the 2016 spring CANON campaign to allow scientists aboard the RV Rachel Carson to monitor a coastal profiling float and take water samples from the same volume of water.

Teledyne Impulse Deepens
University Relationship

Teledyne Impulse-PDM Ltd., based in Alton, Hampshire, England, has fostered a long relationship with the University of Portsmouth, centering on a Knowledge Transfer Partnership to gain insights into the performance of their underwater cable connector assemblies. The relationship now continues in a Ph.D. studentship: Jamila Joseph works part-time on her thesis research while working full-time at the company. Teledyne covers Joseph’s tuition. Joseph’s research focuses on characterizing and optimizing innovative PU systems that do not use mercury compounds as catalysts as a protective coating. Mercury-free PU alternatives such as tin, amines and others, as required under the EC REACH directive, are being investigated with a focus on material optimization and accelerated exposure testing in this research.

2018:  FEB

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