Just 2 quickies from a new starter

finally finished the academy - enjoyed very much.

I have started my first patrol - literally, just started - its my first time so im sailing in real time out of kiel inspecting all the shipping and building with my binoculars - very immersive and cool, sad i know!!

Anyway, i have plotted my course to AM24 right round the top of Denmark and past Norway and then i saw the Kiel Canal - can i sail down here? is there any hidden danger?

And, when my Weapons Officer fires a torpedo for me, does he aim anywhere in particular on the ship (weak spots) or just at the ship in general, and count yourself lucky for the help?!

thanks in advance