I watched the tutorial from WernerSobe on Youtube (
) and things make a lot more sense now. I think I was trying to overcomplicate things with my map and I didn't even know that the range and AOB can be obtained by periscope only.
Anyway, I sunk a merchant ship in open waters. She was moving away and I hit her some 3000 yards away with all 3 torpedoes. So satisfying to see them hit targets.
I also managed to sneak into an exposed Japanese port at night and I sank a stationary 8,000+ ton Hakusika Maru with 3 of my aft torpedoes. And I used my 4th aft torpedo to sink a 7 ton PLANE which was parked in the water. Since I couldn't measure it's height by conventional means via identifying, I just manually measured the distance on map and made adjustments to the height measurement device.
I'm starting to love this game.... Sinking planes with submarine torpedoes. LOL