New Multibeam Offshore Guidelines Published

The Russian Academy of Sciences multi-purpose research ship, Akademik Boris Petrov, which is being equipped with new multibeam and parametric echosounders for seafloor mapping operations in the North Atlantic and Arctic. The Russian Academy of Sciences multi-purpose research ship, Akademik Boris Petrov, which is being equipped with new multibeam and parametric echosounders for seafloor mapping operations in the North Atlantic and Arctic.

New guidelines for offshore use of multibeam echosounders have been published by the London-based International Marine Contractors Association.

The systems, which are due to be commissioned around this spring in readiness for seafloor mapping in North Atlantic and Arctic regions, comprise a Hydrosweep DS-2 multibeam echosounder with a depth capability of 10,000m together with Hydromap on and offline software for acquisition, logging, processing and management of data.

According to IMCA, some 700 multibeam systems have been built to date by at least 10 manufacturers worldwide but there have hitherto been no specifications or guidelines that specifically address their frequent use for offshore surveying. IMCA's remedy is based on a number of existing standards and published specialist papers with additional input provided by the UK Offshore Operators Association's survey and positioning committee.

The aim is to review and update the new guidelines on a regular basis and anyone interested in commenting on the document at www.imca-int.com is invited to contact the organisation's main office (Tel: 020 7931 8171 Email: imca@imca-int.com).

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