The nine sub-squares BF-11 through BF19 constitute the major part of the Western Approaches, the richest potential U-Boat hunting ground in both world wars. Covering as it does the area south of Ireland and west of Ushant and the entrance to the St. George Channel all traffic bound for Brest or the Irish Sea ports from the south had to pass through BF-10. If an error, it is one that leads you to some of the most target rich areas on the ATO during the 1939-41 time frame.
Strange sort of mistake, since no other 9-square contiguous grid square on the map offers so much potential.
|