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Marine Electronics


February 2014 Issue

Dive Works Subsea Solutions Is First to Order Leopard ROV
The first company to order the Leopard ROV by Saab Seaeye (Fareham, England) is Dive Works Subsea Solutions (Carrum Downs, Australia). It is the fourth ROV they have bought from Saab Seaeye in the last 10 years.

'We've found that even though we are a Commercial Diving and ROV services company, the industry is heading more and more towards using ROV's rather than divers,' said Managing Director Andrew Ford.

Ford sees Dive Works bringing the latest technology to its clients at a lower mobilization and demobilization cost.

The Leopard has a light footprint and can be mobilized within one day. At 27 tonnes for the full system, it can be loaded onto smaller vessels, compared to 70-plus tonnes for other work ROVs. It is also more agile and precise to control, Ford says, thereby allowing better access to complex and delicate subsea structures. Dive Works services the Australian oil and gas industry, and the Leopard can be used for a wide range of work tasks, including drill support, pipeline survey, salvage and deep-water IRM.

Jargoon Now Offers UKHO AIO As Part of Seall Software
The United Kingdom Hydrographic Office (UKHO) has announced that Jargoon (Aberdeen, Scotland), a software company specializing in the development of solutions for sea navigation and chart display, now offers the ADMIRALTY Information Overlay (AIO) with advanced functions in its new Seall Passage Planner software tool.

AIO is a free service to ADMIRALTY Vector Chart Service (AVCS) customers and the only service available that includes worldwide Admiralty Temporary and Preliminary Notices to Mariners (T&P NMs) as an overlay on ENCs. AIO is also the only service to include the results of the ADMIRALTY Assurance Program, which is a comprehensive review of the world's Electronic Navigational Charts (ENCs) being undertaken by the UKHO to identify and resolve significant differences between ENCs and existing paper charts, presenting these as ENC Preliminary Notices to Mariners (EPNMs).

TE SubCom Completes Second Fiber-Optic System Installation
TE SubCom (Eatontown, New Jersey) has successfully completed the second installation of its next-generation coherent fiber-optic subsea system and achieved 13-terabytes-per-second capacity over a distance of 6,500 kilometers without any regeneration. The new system is pan-Asian, with the longest path more than 6,500 kilometers.

This system joins TE SubCom's first coherent system, which was approximately 1,350 kilometers.

The demonstration combined a specially designed underwater fiber plant as well as TE SubCom's commercially available coherent C100U line card that features synchronous modulation for 100-gigabytes-per-second operation. The optical fiber used was optimized for coherent transmission and resulted in more than 131,000 picoseconds per nanometer of dispersion.

Ifremer Gets Second ME70 For Mediterranean Research
Delegates from the France's Ifremer visited Kongsberg Maritime Subsea in Horten, Norway, in December for the factory acceptance test of their second Simrad (Horten) ME70 scientific multibeam echosounder, will perform work in the Mediterranean Sea. The Simrad ME70 will be delivered as part of the midlife refit of the RV L'Europe, prior to planned March 2014 sea trials. The delivery completes the Simrad EK60 scientific single-beam echosounder system to create a standardized package that combines quantitative single-beam and multibeam systems for biological survey vessels. Ifremer has also chosen the ME70 bathymetric module to perform seabed mapping while doing ecosystem surveys of the water column.

SOA Chooses HYDROSWEEP For Deep-Sea Surveying
The State Oceanic Administration (SOA) of China's oceanographic institute in Xiamen will equip one of their vessels with an Atlas Hydrographic (Bremen, Germany) HYDROSWEEP MD/50 multibeam echosounder to accomplish surveying projects in depths down to 2,000 meters.

Besides its standard functions of recording high-accurate bathymetric data of the seafloor structure and the ability of recording up to 10,000 side scan values in parallel, the HYDROSWEEP MD/50 comes with its unique 4x multi-ping feature.

In this operation mode up to four swaths can be generated simultaneously per ping using frequency modulation to increase the data density along track. As a result, the new multibeam echosounder maintains gapless coverage at a high survey speed.

Sonar Aids Rebuilding, Cleanup Of War-Ravaged Countries
The almost-20-year-old Somali civil war devastated the capitol Mogadishu and left the city devoid of basic urban services and infrastructure. In an effort to rebuild and modernize the port, Somalia's Transitional Federal Government (TFG) launched the Mogadishu Port Rehabilitation Project.

Assisting in this work is Bancroft Global Development. One of the jobs they have been tasked with is demining the harbor before reconstruction can get underway. Bancroft is using JW Fishers (Taunton, Massachusetts) side scan sonars for the project.

Another organization that employed the sonars in a similar operation is the Regional Centre for Underwater Demining (RCUD) in Montenegro, which was part of the former Yugoslavia. A bloody civil war in the 1990s left the country littered with unexploded ordnance and waterways unsafe to travel because of many scattered mines. After numerous fishermen and boaters were killed from these deadly devices, RCUD acquired a Fisher side scan to help locate the mines. The operation was a success. With the help of the sonar and trained divers, many explosives were found and removed from the country's lakes and rivers.

Today the sonar is being used for more peaceful purposes. RCUD is working in cooperation with RPM Nautical Foundation and the Center for Conservation and Archaeology to locate historic shipwrecks and map underwater sites of significance.


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