You may need to do a search, I have a chart screenie posted on the Tanker Alley location.
If I remember right, it is on BF39. measure 15 kms south from NE corner then run a line 240 degrees from there. That's Tanker Alley (if I got the brid correctly).
The other good location is off Cape Sao Vicente. Draw a line from 20 Kms. south of the Cape to the center of Gibraltar Strait. Lots of singles there.
Good luck!
