Ok, seesing how my first campaign fell victim to a corrupted save file, i statred again. But just for laughs, adter completing my objective I set out for San Francisco after refueling at Rabaul.
Sank a ship to the south of Hawaii, arrived at the coast after a looooong cruise at ahead slow with 3/4 of a tank still left.
LOT of TARGETS there - sank 8 ships for over 50000 tons outside 'Frisco and had 4 torps and slightly under 3/4 of a tank left for the trip back to Rabaul. So, not only is it doable but the code has included targets well outside of the Indian Ocean for the more venturesome among us
