Rov AS is a Norwegian company that provides documentation, inspection and consulting services for the maritime industry, including verifiable inspection reports, underwater mapping, engineering and equipment rental.
The company approached aae as it was having problems monitoring the position of its ROVs in freshwater layers in the fjords, especially when free flying a long way from the mother vessel. This coincided with growing demand for more reliable and accurate reports on anchors for fish farms, as well as increased efficiency during pipe and cable surveys.
It required a new ultra short baseline (USBL) system that could cater for long-distance monitoring, in addition to compatible mini and micro beacons.
“We have always received great support and good value for money from aae technologies. They respond quickly when we need to install a new system or repair an existing system, and always help us find a solution that works. They are a supplier that we really can count on, even when we have a need for custom solutions.”
Robert Olsen, CEO, Rov AS
Enhanced accuracy and tracking capability
Since implementing applied acoustics’ Nexus range of USBL systems, Rov AS has seen vast improvements in its tracking capability, increasing depth range below 3m by 500m, up to 1000m. It has also increased shallow horizontal tracking from 30m depth at 150m range to 10m depth at 350m range, while increasing accuracy from 5% of maximum water depth to 1%.
This accuracy was achieved through the easily adjustable settings in the Nexus software and the ability to configure with third-party sensors. Rov AS has achieved a stable fixed position with a slant range of 1400m at 880m water depth, as well as a 0.5m position accuracy, which has been measured with a high-accuracy multibeam at 200m water depth. Rov AS now has the flexibility to use the channel that is best suited to the environmental challenges in the fjords. Because Nexus is intuitive and easy to use, the company is also finding it much easier to train new personnel. Most importantly, Rov AS has improved the quality of its services, opening up new markets in power distribution, oil and gas.