The Irish Coast Guard requested the launch just before 10am after it had picked up an alarm from an EPIRB (electronic position indication radio beacon) on a yacht half a mile south west of Cape Clear Island.
Coastguard staff at Mizen Head had no success raising the occupants of the yacht on their VHF so the Baltimore all-weather lifeboat was launched to investigate at the last known co-ordinates of the vessel.
Meanwhile, 10.30am the coastguard finally made contact with the yacht’s two occupants on their VHF and established that the EPIRB had been activated by accident.
Speaking after the callout, Baltimore RNLI volunteer lifeboat navigator Micheal Cottrell said: “It is important to ensure the secure fastening of an EPIRB on board a vessel and to regularly check that it is in good working order. Also, whilst out at sea it is important to keep radio watch on Channel 16.
“If you get into difficulty at sea, call 999 or 112 and ask for the coastguard.”