I hope it is like the first SH1. You would look through the scope and have a reconization manaul open. Choose the type of ship it was in the manual. You would give your bow angle postion of the enemy ship. Then click the waterline and the highest point of the ship. Then would would click gather target information. The longer you let the stopwatch go the more accurate your readings would be. Normally 45 to 60 seconds was good to get a reliable TDC to launch your Torpedoes.
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