[Stealhead]

I may be incorrect here but I thought that if you have manual targeting off and you mess around with the TDC or the parts that you can while auto target is on(besides setting torpedo depth speed and detonator) manually it causes you to miss because you mess up the already completed AI solution.

Just saying he seems to want use auto-targeting for the time being.

Id also agree with the advice about opening the tube doors that can throw off even a perfect shot.

luka you can fire torpedoes without the periscope by using your sound gear though you have to have manual targeting on to do it and is pretty tricky but some people on here have scored hits.

And you can also get surface search radar it becomes available in June 1942 but you must add it to your sub while you are in base it is called SJ or in single missions you'll have to select a mission after June 1942.