Fiber Optic News

Image: Seamor Marine

Seamor Marine Debuts New ROV with 3km Capacity

;s hydroelectric generation companies has begun using it for tunnel inspections of two hydroelectric projects on the Old Chiriqui River.  “We are excited to bring this new innovation to the pipeline industry,” said Robin Li, President of Seamor Marine. “The ROV 3-kilometer fiber optic tether and reel system expands the range of our vehicles from two kilometers to three kilometers, allowing our clients to perform long-distance inspections more cost-efficiently and with less of an environmental impact.”Panama’s hydroelectric generation company, Electron Investment

(Photo: Teledyne Marine)

Teledyne Marine: Something for Everyone at OI London

.On-water demos will highlight a full suite of our technologies, including ultra-high-resolution mid-water RESON SeaBat T50-R Extended Range with a built in INS multibeam echosounder,  Odom’s new compact single beam echosounder, RD Instruments TASMAN DVL and Teledyne TSS Saturn high accuracy fiber optic INS, Optech TLS-M3 high-resolution laser scanner, PDS and CARIS On-board software, and Benthos new GNSS Survey Feature for easy recovery of acoustic release deployments.Full details here

Photo: International Submarine Engineering Ltd.

Exploring Under The ice (& Keeping your AUV in one piece)

addition to the most recent Antarctica mission, ISE’s AUVs have been to the Arctic multiple times. Notably, two of ISE’s AUVs created for Canada’s Project Cornerstone completed 1000km of under ice survey in 2010, and for Project Spinnaker ISE-built Theseus laid 100s of kilometers of fiber optic cable.A multitude of factors led to these successful operations, and in this article we’ll discuss some of the inherent dangers of working under polar ice and how they were mitigated.Why are under AUV missions challenging?Every time an AUV descends to explore unknown regions, there is aPhoto:

Photo Credit: Marine Technology Society

#Oi2020 History

In 1976, testing began by the Naval Electronics Laboratory Center of two fiber optic undersea tow cables. This was done to measure “changes in optical attenuation caused by cabling, tension, temperature and pressure,” according to the book Advances in Marine Technology, as published by the Marine Technology Society. The testing led to the six-fiber cable (as manufactured by ITT Electro-Products Division, as the caveat to commence the accuracy of using fiber optics in undersea tow cables.   Marine Technology Reporter has been commissioned to publish the Official “Oceanolo

Photo: MacArtney

MacArtney Supplies Time Saving Solution to MMT

are available via an accessible software user interface.  MacArtney Underwater Technology has been supplying multiplexers to key underwater technology industries for decades. The first MacArtney NEXUS multiplexer, produced in 1999, digitized analogue signals from the depths to the surface via fiber optic cables. In the present day, the NEXUS MK C is MacArtney’s most versatile multiplexer solution, built to meet the customer’s needs


Mooring Cables for LoVe Ocean Observatory

application, these cables had to be conceived and manufactured to fulfil a wide range of data communication systems while guaranteeing the following key features:Breaking strength up to 4400KgReinforced construction with fibers embedded into outer sheathConfiguration for DSL and RS 485 communication Fiber Optic and EthernetWatertightnessPressure, abrasion, & weather resistanceSuitability for constant movement in sea waterEngineering expertise, comprehensive knowledge of materials and a high degree of manufacturing precision enabled NOVACAVI to develop these application-specific cables entirely tailored

Deployment of MacArtney TRIAXUS for vertical profiling (Photo: MacArtney)

MacArtney to Supply Swedish Research Vessel

on an integrated system solution for the new research vessel, the R/V Svea.Working with the Swedish University of Agricultural Sciences (SLU) since 2009, MacArtney has provided a range of technology, from camera and light systems, to more recently, the co-design and upgrade of a Lobster Sledge with fiber optic multiplexer and interfaces.Now MacArtney has delivered a fully integrated scope of supply including the MacArtney TRIAXUS and FOCUS 2 ROTVs (Remote Operated Towed Vehicles) and a customized CTD (Conductivity, Temperature and Depth) carousel with water sampling and drop-camera system comprising

Image: Cable Solutions (Worldwide) Limited

Cable Solutions Manufactures 50km of Bespoke Subsea Cable

to ensure high levels of productivity and durability in harsh offshore environments."The last quarter was especially busy for Cable Solutions, we undertook bespoke cable design and manufacture for a variety of subsea projects, with production runs of 300 to 5000 meters. We were active in fiber optic cable manufacture, supporting projects with more efficient communication and seafloor monitoring," said the company in a statement.The advantages of using fiber optic cables in a subsea environment are well known, with operators leveraging the advantages of improved performance. "We

Image courtesy of the Ocean Exploration Trust/Nautilus Live

#Oi2020 History

Commencing operation in 2000, NOAA’s remotely operated vehicle Argus typically works in tandem with another “workhorse” ROV known as Hercules. As a “tow sled” designation, Argus is suspended at the end of a steel-armored fiber-optic cable that is tethered to NOAA’s E/V Nautilus at the sea surface. Because Argus lacks a buoyancy module and is built of heavy stainless steel, its movements are controlled by moving the ship or raising and lowering the cable. A short 100-foot tether connects Hercules to Argus. By keeping the tether between Argus and Hercules slack

Saab Seaeye’s Sabertooth AUV (Photo from Saab Seaeye)

Seaspace Race Underway at Saab Subsea Docking Demo

use it.“This is the first generation (SDS) and we have learned a lot,” he says. “We’re also looking at how a tooling garage would fit in and last week we tested a new generation connector that’s proposed to be included in the SWIG standard.” It would work with a DC fiber optic umbilical design, which Equinor is starting to use, he says.Plenty more is yet to come. The sea space race is just starting.Read more.(Photo from Saab Seaeye

Marine Technology Magazine Cover Mar 2020 -

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