Irish Marine Survey ship "Celtic Voyager" is currently scanning the seabed they are using multi-beam echo sounders to search for the wreckage of the Coast Guard helicopter, if they locate the wreckage they will bring in the larger sister ship "Celtic Explorer" which has a large crane and a remote sub, the Naval ships "LE Eithne" and "LE Roisin" are scanning the area with their equipment, the search is being concentrated near Blackrock Lighthouse. Irish Air Corps Casa and AW139 Helicopter also involved.
Some info here
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