The Irish Coast Guard (IRCG) operates six Sikorsky S61N helicopters.
Their registrations are: EI-SAR, EI-CZN, EI-GCE, EI-RCG, EI-CXS and EI-MES.
The Irish Coast Guard has no official ICAO Identifier. The callsigns to be used when flying SAR missions depends on where they are, at that moment, operating from.
The aircraft are rotated between bases for maintenance and training.
| Base | Callsign | Radio Callsign |
| Shannon | R115 | Rescue 115 |
| Dublin | R116 | Rescue 116 |
| Waterford | R117 | Rescue 117 |
| Sligo | R118 | Rescue 118 |