Phew - just finished the patrol I met the convoy (see above).
Got away from the destroyer by sitting still at 100m until he had enough and went back into formation. Then I set a new intercept point. Set myself up about 2km from the convoys course on about 90° angle. Wanted the destroyer bad!!!
Problem was that it was still alert and was doing a search pattern in front of the fleet. Well I wanted him. Set myself up right in front fleets path, periscope depth, all engines stopp. I got too anxious and wasted 3 torps while I had him 90° off at about 1000m - but he turned too early...
Well, side effect was he went back to fleet since he must have noticed the torp explosions in the rear.
So, outta front torps I had enough. I surfaced and opened fire with the deck gun. For my luck it was night. The destroyer did not discover me until I had hit him 4 or 5 times. Then he opened fire with his deck gun. Ok, I wanted to bully it out. I kept firing as he turned on me and closed at flank speed. Tracers went past me, near hits but no directs. Luckily I made some AP hits just below the waterline.
At approx 1500m I alarm-dived and headed straight into the convoy at flank speed. As I had freighters all around me by using the hydrophone I went to periscope depth again. And there he was, the destroyer doing his search pattern again, but with searchlights this time. I kept the periscope as low as possible. I noticed he got "Schlagseite" - so the waterline hits must have breached the hull. But he was still fully manouverable.
I again got anxious. Since I only had aft torpedos left I let one go at a T3 tanker my rear. It was a bad angle and 2500m away. The stopwatch went beyond the redline and I thought the torp wasted. But I heard an explosion - no kill message though.
That woke the destroyer up again and he started going in front of the fleet. Maybe he thought I'd be still out there.
Well, as he passed 1500m I surfaced again and opened fire! This time I got noticed as soon as my tower peaked out. Tracers went flying again. As he showed me his side I was able (or rather lucky) to get one of the rear guns. A few hits later the destroyer actually gave in. The top HE hits plus the waterline AP hits must have been too much!
I couldn't believe it - I won a shoot-out battle with a WV Destroyer...
So there I was in the middle of that convoy with no protection left. Too bad I wasted all my AP ammo. But still I was able to sink a C3 cargo (american!!), a T3 tanker (which was already partially submerged from the 1 torp hit), a T2 and a small tanker, 2 C2s and a small freighter that crossed my line of fire to the C2 (don't do that!).
All in all 10 merchants and 1 warship sank. Finished the patrol by sitting 24h at AN13 and heading back to Brest.
On the way back I got a radio message on another convoy - but absolutely no ammo left.
Got 2200 points for it (maybe some deduction because of the "neutral" american C3 cargo?). Couple of EK and promotions for the crew plus the small stuff.
Playing at 97% realism (event movie on so I can judge the manual torpedo solution after launch)
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some cool observations
- One of the C2 had tanks laden!
- the american C3 had trucks laden - I shot them burning for the fun of it - after a while the exploded and fell of deck!
- some of the freighters tried to run, others went for collision course and most stayed on course
tip on shelling C3
- there is a cavity below the bridge; put some HE into that hole from front angle and it will explode rather quickly (maybe 10 shots or so)