I haven't written any others but there are some good ones out there. Wazoo's manual for one and a thread titled 'The Hunt" The fast 90 is probably the best way to start to learn manual. I did this tutorial in the navy tutorial because in my mission I was constantly in 15MPS winds.
Its best to start in the navy tutorial and pick a ship that doesn't turn. The C2 or medium cargo that is just off to your left when the torpedo tutorial loads is perfect. Turn your duds off before you start and make sure your external camera is on. Then get lined up and just plot the ship for 15 minutes and practice setting the TDC manual.
Perfect TDC settings mean zilch if your off on the targets speed by 1 knot. In my example the ship was only doing 2.3 kts but if it was doing 15kts the results would be the same as long as I estimated its speed correctly. So plotting is the real key.
Check out this link, it was a big help to me.
http://www.subsim.com/radioroom/show...highlight=hunt