I was facinated to find out that despite being "neutral" during WW2 or "The Emergency" as we called it there were quite a few Irish Merchant vessels sunk in an aggressive manner, and not apparently due to mis-recognition.
M.V. MUNSTER Mined and sunk in the Irish Sea - February 1940
STEAM TRAWLER LEUKOS Sunk with all 11 hands by gunfire from U-38 (Liebe) - NW Tory Island - 9th March 1940
S.S. CLONLARA Sunk in North Atlantic, 22nd August 1941
Irish Lights Vessel - ISOLDA Sunk by aircraft off Waterford coast, 19th December 1940
S.S. IRISH PINE Torpedoed and sunk - lost with all 33 hands - 15th November 1942
S.S. KYLECLARE Torpedoed in North Atlantic, 23rd February 1943
S.S. IRISH OAK Sunk by U-Boat U-607 in North Atlantic, 15th May 1943
S.S. LUIMNEACH Sunk by submarine gunfire in North Atlantic, 4th September 1940
S.S. CITY OF BREMEN Sunk by aircraft - Bay of Biscay - 2nd June 1942
S.S. ARDMORE Mined and sunk off Saltees Island, 11th November 1940
S.S. CITY OF WATERFORD Sunk in collision in Atlantic, 19th September 1941.
S.S. MEATH Mined and Sunk in Irish Sea - 16th August 1940
S.S. KERRY HEAD Sunk by aircraft bombs, 22nd October 1940
M.V. INNISFALLEN Mined and Sunk in River Mersey, 21st December 1940
S.S. St. FINTAN Sunk in Irish Sea, 22nd March 1941
SCHOONER CYMRIC Missing at Sea, February 1944
S.S. CITY OF LIMERICK Sunk bu U-Boat in Atlantic, 15th July 1940
NAOMH GARBHAN Mined and Sunk off Waterford coast, 2nd May 1945
I wonder if any irish vessels appear in-game as pictured here:
http://www.mii.connect.ie/pictures/pine.html