Meters or Yards??

[Sailor Steve]

Originally Posted by TheSatyr

They used patrol areas...not grids. I think there were around 14 patrol areas,which meant that US boats had to cover alot more territory while hunting than the U-Boats did.

Not quite sure how it was handled when multiple subs operated in the same patrol area...I think they used lattitude and longitude for the patrol boundaries in that situation.

I'm not sure either, but I think you're right about the boundaries within a patrol zone. I vaguely remember reading a discussion long ago in which someone mentioned that SHI's patrol zones were much larger than the areas subs were actually assigned to patrol. I know that "vaguely remembered" and "long ago" are hardly real evidence, but that's as close as I can come.

I do remember one account of two subs in adjacent areas colliding underwater, resulting in one being forced very deep and the other knocked to the surface, from United States Submarine Operations In World War Two.