This was the first visit to the Great Southern main line by No.85 “Merlin” - the first time a Great Northern Compound had ever been on Great Southern Railways metals. It was also No.4’s first visit to Killarney and Tralee and both locomotives put up excellent performances. Saturday 13th May: (4+RPSI ECS) Dublin Heuston - Mallow; (85+Cravens) Dublin Heuston - Mallow; (4+RPSI Set) Mallow - Tralee; (85+Cravens) Mallow - Killarney; (85 LE) Killarney - Tralee. Sunday 14th May: (4 LE) Tralee - Mallow; (85+RPSI Set) Tralee - Mallow; (85+RPSI ECS) Mallow - Dublin Connolly; (4+Cravens) Mallow - Dublin Connolly; (85) Dublin Connolly - Belfast Central; (85 ECS) Belfast Central - Belfast CSD. Monday 15th May: (85) Belfast - Bangor - Antrim - York Road - Whitehead.