The search for the remaining two crew members of Irish Coast Guard helicopter R116 will resume today after bad weather hampered efforts over the weekend.

The 18-metre Interceptor-style vessel powered its way 2,020km anti-clockwise around Ireland, encapsulating all of Ireland’s islands.

Black Rock lighthouse and the island it stands on were not included in a navigational database used by helicopter R116 and there is no assurance that a similar accident could not happen again.

Ireland is recalculating its claim to potentially oil and gas-rich Atlantic waters — right down to the very last centimetre.