in my last patrol i found a convoy , and my u-boat with 13 torpedos onboard. :|\
Because the scort was only three destroyers, i choose did the first periscope depht attack at the end of the day for recognise the convoy and using only one torpedo for target.
i stopped a c2 and broke a c3 in two , other c2 damaged and slow down. at night i surface and finish the damaged ships.
during the night i did more attacks in the convoy with the same metod, if the ship don“t slow down, it was a primary target for the next attack.
i finally i sunk one small merchant, two c3 and 5 c2