Most ROV pilots are familiar with the vanishing target problem when operating mechanically scanning sonar. During the approach with an ROV or any other moving platform, heading alterations of major proportion will often place sought-after targets outside of the viewing sector of the sonar on successive sweeps. What follows frequently, in order to relocate the object, is a sector increase on the sonar, as well as platform stabilization via contact with the bottom, which is time-consuming. Smaller unwanted changes in rotation of the sonar platform will either compress or expand the scanning density on the target, causing sufficient distortion of the displayed image to deny object recognition. The Imagenex Model 881L-GS sonar, which employs a low drift gyroscope as well as a magnetic compass, is designed to be capable of correcting for orientation changes at a rate in excess of 500 degrees per second, which allows it to compensate for sudden turns and inadvertent bumping or jarring. Therefore, scan lines are displayed without blurring, compression, or smearing effects in all modes of operation, be it polar, sector or North-up. The North-up mode references the sonar image to true north when using an appropriate variation input. Regardless of platform heading changes, the sonar is able to keep the target continuously at the center of the scanning sector. Positional changes of aspect relative to the target are easily compensated by clicking the “Set Gyro Reference” button on the screen.
www.imagenex.com
(As published in the March 2014 edition of Marine Technology Reporter - www.seadiscovery.com)
The Imagenex Model 881L-GS sonar, which employs a low drift gyroscope as well as a magnetic compass, is designed to be capable of correcting for orientation changes at a rate in excess of 500 degrees per second, which allows it to compensate for sudden turns and inadvertent bumping or jarring. Therefore
3.0, FarSounder has improved its 3D sonar display, the developer said. According to FarSounder, improvements include target persistence via new image stabilization techniques, updated color mapping fusing depth and signal level information, improved Auto Squelch mode, expanded chart overlay including full
Images Seaspan Corporation/Foreship With plans to have a full-scale test engine running on am- age it'll be similar to LNG.” Looking at the engine makers and monia in early 2024, the company said it expects to hold its de- their progress, Brindley is diplomatic in saying that there is no livery timeline
scalability for E or green am- Seb Brindley, Senior Naval monia is better than methanol.” Architect, Seaspan Ship Management Challenges with Ammonia Image Seaspan Corporation While ammonia holds promise, it too is not without a long list of chal- testing and installation of the main mover – the marine
Mærsk Mc-Kinney Møller Center for Zero Carbon Shipping (MMMCZCS) has set out to develop a design for a large 15,000-TEU ammonia-fueled container vessel. Image Seaspan Corporation/Foreship By Greg Trauthwein orking with ship designer Foreship and the in large quantities for various industrial purposes,
Heibel, SVP Commercial, ARC Below: M/V Patriot loads a V22 in Jacksonville, FL. Below Right: M/V Freedom loads an Amtrak railcar for export in Zeebrugge. Images courtesy ARC 28 Maritime Reporter & Engineering News • February 2024 MR #2 (18-33).indd 28 2/6/2024 9:17:05 A
MSP stipend. It’s a cargo driven industry, and those cargoes help to offset the foreign ? ag cost differential.” Eric P. Ebeling, President & CEO, ARC Image courtesy ARC particularly bullish on the ship Endur- said Ebeling. “Another part that’s an (MSP) was established by President ance, which he calls
Leader, Marine & Stationary Power Systems, Wabtec, offers insights on how the megatrends of decarbonization, energy transition and autonomy all inspire Image courtesy Wabtec and impact the marine power solutions from Wabtec. By Greg Trauthwein Matt, to start us off, can you provide insight on Wabtec is
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, and ammonia to meet its goal. Political Risks Political risks and violence, in- cluding political instability, war, terrorism, coup d’état, civil com- Image courtesy Allianz Risk Barometer 12 Maritime Reporter & Engineering News • February 2024 MR #2 (1-17).indd 12 2/6/2024 9:40:35 A
the trailer and lieu of live lifeboat launches, offering more ? exibility and perform a series of training scenarios,” Burry said. enhancing safety. All images courtesy Virtual Marine 36 | MN February 202
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Insights All images: MITAGS she explained. “We can have over 150 years of sea service sitting at the lunch table at any point in time, and it really creates an interesting and dynamic environment,” Gianel- loni said, referring to the instructional staff. “We are not in any way a certi? cate farm. The
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are targeting 75% less of mooring length compared. So less mooring length, less materials will be used.” Alvaro Ortega, CFO, Gazelle Wind Power All images courtesy Gazelle Offshore Wind Gazelle Today costs by 30% compared to conventional semi-submersible de- By Ortega’s estimation, Gazelle is racing
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TECH FEATURE BATTERY SAFETY Images courtesy Engineered Fluids Inc. This experiment has since been replicated with other batteries and cell con? gurations, and demonstrates the inherent ? re safety of SLIC Technology. jacent cells were not affected, and continued to operate nor- Failures) of electronic
cells in the pack, destroy- ing all of them. In the pack immersed in AmpCool Coolant, on the right, the punctured cell began an intense ? re, but the Image courtesy Engineered Fluids Inc. With Immersion Cooling, the average battery temperature energy was absorbed and contained by the coolant ? uid. Ad- was
Image courtesy Kystdesign currents, SMD explains. The ? ight control system can also link to other SMART systems unlocking autonomous func- tionality. They use unique electric propulsion technology that offers extreme performance in fast-moving water, but not at the expense of ? ne control. “All this
ROVS Omega Subsea Robotics ordered six complete ROV systems from Kystdesign. Image courtesy SMD DEME’s upcoming subsea rock installation vessel Yellow- structor ROV systems and two brand new compact Construc- stone, scheduled to join the ? eet in the ? rst half of 2024. tor ROV systems. The systems
Image courtesy Copenhagen Subsea Seatools completed Factory Acceptance Tests (FAT) for a Fall Pipe ROV developed for DEME, to be deployed on DEME’s upcoming subsea rock installation vessel Yellowstone, scheduled to join the ? eet in the ? rst half of 2024. Image courtesy Seatools www.marinetechnologynews.
and quickly restore operability. This feature also allows for extensive expansion and customiza- tion of components. The E-GO has integrated AI into al- Image courtesy Seamor most all operational aspects of their vehicle. With AI Vision Lock, it has high-level adaptive stabilization and can lock onto target
also improve imaging and data analysis using machine nology has developed signi? cantly in recent years. These learning algorithms to process and analyze images and sensor systems have advanced computer vision, machine learn- data in real time, helping pilots and scientists make informed ing, and arti? cial