It's actually kind of bad around Guadalcanal in 43. I'm not sure how historically accurate it is, but it seems as if you can just pull up, resupply, and go out about 10 miles to find targets. The shipping passes right by that point to such a degree that you can rack up tonnage by leaps and bounds.
Sadly, I take advantage of it. Hey, I'm there to sink Japanese shipping. Not my fault they waltz right into American controlled territory and ask to be torpedoed.
