Rathlin Island Sound Maritime Festival Posted on May 25, 2017 Loading Map.... Rathlin Island Sound Maritime FestivalPortnagree House Harbour and Marina Visitor Centre - BallycastleEvents 55.2073913 -6.241252400000008 Address Portnagree House Harbour and Marina Visitor Centre Ballycastle BT54 6BT Northern Ireland Upcoming Events No events in this location