Dutch

Kongsberg Maritime has been selected by the Dutch Ministry of Infrastructure and Environment (Rijkswaterstaat Survey department IGA) to deliver its EM 2040C multibeam system to assist inland waterway survey operations.

Last year, the ministry had placed orders for five EM 2040C dual head and dual swath systems.

The contract included an option to procure 11 more systems within the next ten years.

The first five systems were delivered at the end of 2015 and the remaining units will be delivered on demand depending on the availability of the vessels.

Additionally, a contract was awarded to the company to provide maintenance and management services that will be coordinated from the Kongsberg Maritime Holland office.

Kongsberg Maritime Holland sales manager Ronald Keesmaat said: "The EM 2040C is the ideal tool to support the Ministry’s wide remit, as it can provide highly detailed results from small, lower cost vessels of opportunity.

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"This provides flexibility, which is vital considering the huge amount of waterways the Ministry is responsible for."

The Dutch Ministry of Infrastructure and Environment will use the EM 2040C systems on a regular basis to survey and monitor 2,137km canals and rivers with 5,472km waterways throughout the Netherlands to ensure safe navigation.

Developed based on the previous EM 2040 multibeam system, the Kongsberg engineered EM 2040C is fitted with acoustic technology to enable detailed surveys in shallow waters by employing small boats and launches.

The system is said to generate accurate and high-quality data in real-time, which enables to conduct surveys cost effectively and with minimum post-processing requirements.

"The EM 2040C is the ideal tool to support the Ministry’s wide remit, as it can provide highly detailed results from small, lower cost vessels of opportunity."

The range of services offered by the EM 2040C also includes port and harbour surveys, post-dredging surveys, shipwreck exploration, habitat mapping, pipeline inspection and hydrographic surveys.

It features high resolution and a wide frequency range from 200 to 400kHz, with frequency selection in steps of 10kHz. EM 2040C is fitted with frequency modulated (FM) chirp which enhances the range and offers a maximum depth of 490m with a beam width of 1×1° at 400kHz.

The dual head system is attached with two tilted sonar heads for 200º coverage, while enabling to survey up to ten times water depth on flat bottoms.

In January this year, Kongsberg supplied its dual head EM2040 multibeam echosounder to the Port of Darwin, Australia, to support its bathymetry monitoring programme.


Image: An image taken by Kongsberg EM 2040C. Photo: courtesy of Kongsberg Maritime AS.