File contains reports from Michael Polly, Principal Keeper Dunmore East, and J. Connolly, Assistant Keeper, of sighting several ships sunk in the area having been torpedoed or struck mines. Also included are details or crews being landed in Dunmore East.

File contains reports from W. Eager, Principal Keeper Hook Tower, of sighting several Patrol Boats sunk in the area having struck mines. Also included are details of a large Barque torpedoed and sunk on 29 April 1917.

Files contain letters and telegrams from P. J. O'Donnell and R. Duffy, Assistant Keepers Inishtearaght; and J. Cooper and F. Curling, Principal Keepers. Included are details of: sightings of submarines and floating mine ; Oil Tank Steamer in Distress (January 1917) ; assistance to crew of SS 'Scalpa' who landed on Skellig (April 1917) ; Leith Hull & Hamburg Steam Packet Co. payment for provisions supplied to crew of SS 'Scalpa' and reward for Keepers ; reducing power of Light (March 1918).