Quick question on GWX Targeting

[dmlavan]

I've been playing GWX 1.03 for a few weeks now - BTW thanks again to everyone who put this great supermod together. When targeting a ship (merchant or warship), does it matter where the torpedo hits, i.e. can you target and hit an ammo magazine, engine room, etc? I've looked through the posts, and am confused as to whether GWX uses a total number of "hit points" or if location matters. Thanks.