Six months after Rescue 116 crashed into an island that was not included in its onboard warning system, serious questions have been raised about when the company first learned about this lethal danger.

Four months after the Rescue 116 disaster off Black Rock fresh questions have been raised about when the company responsible for an onboard warning system were first alerted to shortcomings in the system, writes Ciara Phelan.

Four flares were let off into the Waterford sky as a wreath was laid at sea in a tribute to the crew members of Irish Coast Guard helicopter R116.