Using manual targeting without the notepad, I just made my record yesterday when I sank a Russian troop transport ship in plain middle of a heavily escorted convoy with two eels under her keel from a 3700m distance.
Perfect calculation via the navigation map: speed 6,5 knots, AoB 142deg to starboard, distance 3700m, gyro angle 001. I computed it all manually, aimed the bow and the chinmey area in the middle, fired my eels, and immediately turned around at 80 meters deep in silent running to escape. Five minutes of wait in anguish while blinding following my torpedoes on the Attack Solution map, the target out of sight, and then I heard "Boom!-boom!". I knew that it were two hits. 8000 tons down the Black Sea!
We should do Subsim Olympics, with one of the discipline being long range manual targeting.
