More details from the Irish Coast Guards FB page:
Irish Coast Guard
39 minutes ago near
Clane, Kildare
On going mission off the west coast. Single handed yachtsman in urgent need of Medevac after being injured in heavy swell. So far unable to locate the yacht but have an approx area. Tasking given to rescue 115 at 0630UTC as she was completing transfer of a pilot onboard a ship trying to enter the Shannon (weather too rough to transfer pilot by boat). Rescue 115 accepts tasking and routes to Cork for fuel. Currently Rescue 115 en route to the area 200 kilometers south of Mizen. ETA 1030 UTC for winch ops. Best of luck to the crew.