No no no.... never try a surface attack. LOL It's a long walk home if you're lucky.
Do you still have the 1 2 3 alignment lines showing on the attack map? If so get the No 1-2-3 Torpedo Alignment mod to get rid of them.
Found here.....
http://www.subsim.com/radioroom/down...o=file&id=1691
This is
not manual targeting and is done without TDW's UIs. It's been working just fine for me so far. Knock on wood.
Set your torpedo depth, and set the speed for your steam torpedos. I keep a chart listing the different keel depths for the different ships. You can remember keel depths without the recognition manual for most ships once you played a while. Just hit around 4.4 to 5.2 meters if you if you don't have time to check. I say that because there are times you don't have enough time to check and you must make a snap shot if they're closer that 1000 meters.
When you lock on a target that will set everything. Break lock and keep the crosshair where you want the torpedo to hit.... center, fore, aft, or anywhere in between. Fire and you should hit your target. Tho speed of the target will affect your aim if the target is real close.
Now this is important. If you do turn on the TDC to see the recognition manual make sure you turn it off and Break Lock before you fire. If you forget you will only waste a torpedo, unless your firing into a good size convoy and get lucky.
An example for a destroyer heading straight at my U-boat and is out at 2000 meters or more. Battle Stations and Silent Running are on and I turn to head straight at the target, or turn so it's 180 for a stern shot. I leave the torpedo depth as it is (1.9) or no lower than 2.9 meters. I'll make sure I have a steam torpedo and set it to it's fastest speed and the Pistol is set for magnetic. Zoom in on the attack map so you see the compass grid and distance out. When the destroyer get's within 800 meters I fire straight at it's bow. 90% of the time I can sink it. When they change speed and direction is when you miss. Tho usually they'll barrel right at you. If it's a miss then dive as fast as you can and knuckle right or left. Get back to Silent running, sneak off, and wait them out if you can.
I've been doing it this way since SH3 and 4 and it works fairly well. The first mission to British Coastal Waters on my reinstall I sank 11 ships including 3 17,000 ton troop ships. A total tonnage was 112,781. And then I was sunk on the second patrol and lost my sub.
Good luck and sink em all Rush.