All have their own tactic but personally I depend on my hydrophone man and myself manning the hydrophone. I attempt to find the general direction of the ship. I make every attempt to get ahead of the trajectory. Submerged in it's track I let the hydrophone man call out location and if the ship is moving closer. I sit with periscope up scanning the general direction the hydrophone man is calling out until vessel comes into view.
Once I used this tactic and was probably the coolest thing I did in the game. The fog was as thick as pea soup. I sat in the targets track with periscope up scanning the area my hydrophone man was calling out. Out of the fog came chugging a massive black Liberty ship less than 1000 meters at a 90 degree angle to my bow. I could not ask for a better solution for a sinking. It was just darn cool to see that ship coming out of the fog like that
