Gary Bohan, from Belmullet, spent yesterday recovering debris in a rigid inflatable boat (rib), following the helicopter crash off the Co Mayo coast in the early hours of Tuesday morning.
Mr Bohan worked alongside a dedicated team, tasked with removing debris from the Atlantic Ocean as an investigation tries to establish what happened to Rescue 116 in the moments before the crash.
"We got involved at about 9am this morning. The conditions are bad," he told the Irish Independent.
"The debris is scattered across about two miles. The biggest part that came out is about half the size of a [truck] dirt panel.
"There's bits the size of a microphone out there too. It's all over the place," he said.