File contains letters from R. J. Duffy and J. Ryan, Principal Keepers Galley Head. Included are details of: reporting to Coastguard re lifeboats from torpedoed vessel SS 'Arabic' (August 1915) ; reports of dead bodies of two women washed ashore from 'Arabic' disaster (October 1915) ; report of cargo steamer sunk (September 1916) ; reports of Danger Signals flown by boats in distress (October 1917 and March 1918).

File contains letters and telegrams from J. J. Sweeney, James O'Connor, and A. J. Hamilton, Assistant Keepers Mizen Head, and T. P. Murphy, Principal Keeper. Included are details of: instructions from Admiralty re reporting submarines or suspicious vessels ; reports of submarine sightings ; rewards for reporting submarines ; instructions to screen all Lights at the Station.