Well, mine was tonight's patrol. (using GWX)
Late 1939, and Karl Myer and "Unlucky" U-17 are in the middle of a gale, and even when he is able to hunt down a ship using hydrophones, they only become visible within 300 meters, too short for a torpedo to arm. So Karl talks to his officers and decides to do something with kahunas, as the last patrol was cut short by having a A&B pop out of a storm and kill three crew in the resulting depth-charging.
U-17 is going to scapa flow. Even if its just a cruiser, it would be high marks to take one out early in the war. So In the gale, and timeing the by nightfall, U-17 slips into Scapa flow.
And there not a ship to be found.

Unlucky U-17 bad luck strikes again.
Now, after searching, and no signs of even a tanker to put to the bottom, U-17 needs to slip back out, and near the exit, the Hydrophone operator detects one near, so Karl lifts the scope up to see what is there.
at 1200 meters is a V&W broadsides, in a almost ideal 90degree angle, So Karl launches 1 and 2, aiming for a double hit. This is the first target in two patrols, so he a bit aggressive as he does not want to loose his command. just as the second eel is out, and just as he about to order a crash drive, he sees the V&W turn to U-17, so Urban stays calm, and waits till it finishes it turn, and unleashes the third eel at the V&W, and orders a crash dive.
The third Eel goes deep, however the pistol was set for mag, and there is a nice BOOM as the torpedo hits true. The U-boat is rocked by the first round of or depth charges, and then odd, loud explosions rip though the water. Then the Hydrophone operator informs that the target is sunk. Apparently, cordite went up in smoke, and the ship broke in two and slid into the sea.
Of course, being Near Scapa flow, means there was a rally towards the sunken ship, and they found me.
Four hours later, I finally have escaped, Seven of my men lay dead, including my watch officer, and another officer is wounded, I had flooding in the bow (and as a nice touch, the boat leans towards the flooding. I try to rise to scope depth, as a gale is chased off the escorts. I am not rising. Not sure if it was the damage or if I had the planes set down for some reason, but I called for a emergency blow. ever so slowly I poped to the surface and headed back home.
had 37 percent hull left, and afterwords found out that I had sunk the HMAS Vampire with 76 of 100 hands lost at sea.