County Cork
Lough Attariff

Investigator F.W. Holiday was in correspondences with a Mr. W. J. Wood, who served as director of Harte Industries Ltd. in Cork.  Mr. Wood was already a well experienced angler when one day in June of 1966 he observed a creature unlike any he'd ever seen before in his fishing trips.  The following account by Mr. Wood's testimony was published in Holiday's The Dragon and the Disk:

In 1966 in the month of June, I was fishing at Lough Attariff, a 16 acre lake in the hills between Clonakilty and Dunmanway.  The sun was strong with a very light southwesterly breeze into which I was fly-fishing with an expectant eye open for rising trout.  Suddenly and quietly a long dark brown object surfaced at a distance of about a hundred yards, facing directly towards me.  It had the head of a well-grown calf and large glittering eyes almost at water-level.  The distance appeared to lessen and the creature's approach-angle altered until it was parallel to me and about ninety yards distant.  It seemed to be about 10 to 10 1/2 feet long and protruded above the surface 5 or 6 inches.  After about two minutes the animal submerged.

This wasn't Mr.Wood's only experience with a possible lake monster. A second encounter took place at Lackagh Lake in Kerry. 

F.W.Holiday The Dragon and the Disc (p. 64) 
[Sidgwick & Jackson, London, 1973]