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Marine Notice: Survey Operations For Subsea Cable In Irish Sea

27th September 2018
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The MV Fugro Helmert is carrying out the cable route survey east-northeast of Loughshinny The MV Fugro Helmert is carrying out the cable route survey east-northeast of Loughshinny Photo: Wikimedia

#MarineNotice - Fugro is currently carrying out marine operations in the Irish Sea on behalf of Alcatel Submarine Networks for the Havhingsten Subsea Cable System project.

The works from Loughshinny in North Co Dublin on an east-northeasterly route were scheduled to commence yesterday (Wednesday 26 September) and will last for around 30 days.

The vessel involved is the MV Fugro Helmert (Callsign: ZDNM8), which is running hull-mounted multibeam echo sounder lines along the proposed route.

Towing equipment such as magnetometer and side-scan sonar will be used during the shallow water phase, from around 105m of water depth and shallower.

The vessel will slow down or stop from time to time to measure the speed of sound in the water, and to perform geotechnical measurements.

A dynamic programme of survey is to be conducted in several stages. The survey vessel will be deployed within the working area at times and positions determined by client requirements, weather and sea conditions.

Inshore survey operations will be conducted on a 12-hour basis (daylight). Offshore survey operations will be conducted on a 24-hour basis.

Throughout the offshore survey, the vessel will be displaying shapes and lights prescribed in the International Rules for the Prevention of Collisions at Sea (COLREGS) Rule 27 to indicate that the survey vessels are restricted in their ability to manoeuvre.

A listening watch will be maintained on VHF Channel 16, and the vessels will actively transmit an AIS signal.

Details of co-ordinates are included in Marine Notice 35 of 2018, a PDF of which is available to read or download HERE.

Published in News Update
MacDara Conroy

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MacDara Conroy

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MacDara Conroy is a contributor covering all things on the water, from boating and wildlife to science and business

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