As Afloat reported previously, another County Cork marina at Kinsale Yacht Club was also awarded the standard.
The programme aims to raise environmental awareness and promote sound environmental management of beaches, marinas and inland bathing waters around the world.
The 80 Irish beaches and 10 marinas that have achieved this accolade in 2020 must adhere to specific criteria related to water quality, information provision, environmental education, safety and site management.
"The award is really important to the Club as it is a vital part of our overall sustainability strategy", Gavin Deane, RCYC General Manager told Afloat.
On the West Coast, Kilrush Marina on the Shannon Estuary, and facilities in County Kerry at Fenit and Portmagee were also Blue Flag winners.
Other Blue Flag marinas for 2020/21 are:
- Greencastle Marina
- Rathmullan Marina
- Fenit Marina
- Kilmore Quay Marina
- New Ross Marina
- Quigleys Marina, Killinure Point, Co. Westmeath