The Old Man 
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U 113 (IXC) - 2nd War Patrol - Convoy battle
Quote:
Originally Posted by Kapitän
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...
Wednesday, 15 October 1941 - Northwest of Rockall Bank -
0040 - Group "Mordbrenner" now in Qu.3666AL, course 8°, 5kn.
0400 - WNW5/4, overcast, light haze, medium visibility, ~1000mb.
0451 - Incoming F.T.: From U 553:
After making contact with convoy SC.48, immediately pressed home the attack and sunk the British Silvercedar, 4354ts, and the Norwegian Ila, 1583ts. About 50 ships and 4 escorts. On course 70°, speed 7kn. Keeping contact and sending radio beacon signal. - Thurmann -
0530 - Qu.3655AL -
0601 - Morning Dawn.
Incoming F.T.: From F.d.U.M.:
For Commanders eyes only: Further special orders for boats operating in the Mediterranean.
0708 - Sunrise.
0719 - Incoming F.T.0710/15: From B.d.U.:
B-Dienst reporting small enemy convoy in Qu.3681AL, course ESE, speed 6kn.
0729 - Boat operating on convoy 0710/15. New course 163°, 1/3-Ahead. Boat should make contact with convoy in about 2h in Qu.3682AL.
0907 - At plotted interception point - nothing found.
Diving for sound check. At first nothing heard, then faint screw noises bearing 25°. At S-Tiefe nothing seen.
0913 - T=18. Full Ahead.
0920 - S-Tiefe. Sound contact turbine bearing 26°, E=24000.
Cmdr.: Only now I discover the blunder: We were plotting a convoy course of ENE, when in fact it is ESE. A classic rookie mistake.
0922 - Surfaced after 15min. and 1.1sm. 2xH.F.-Ahead.
0950 - New course 136°.
The convoy comes into sight. E=10000.
5 steamers in keel-line and a Flower Corvette in the back:
1. Ore Freighter; 2. M12-Freighter; 3. OreII Freighter; 4. Medium Freighter; M39 Freighter.
The Corvette has the following ASW sensor fields:
Field-of-View 360° = 8000m
Radar 360° = 3000m
Sound contact 270° = 6500m
ASDIC 180° = 1500m
1125 - Moving ahead of the convoy along its port beam, all the while keeping a distance of 8000m. New course 210°. K.F.-Voraus.
As the wind and sea conditions have not improved since 0400h, the torpedo running depth has to be set at min. 3.5m.
1132 - At E=7000, diving for submerged attack. S-Tiefe. 65rpm.
1147 - "Battle Stations!". Flooding tube I.
1155 - Two Incoming F.T.: From B.d.U.:
U 568 (VIIC, Kptlt. Joachim Preuss), U 502 (IXC, Kptlt. Jürgen von Rosenstiel), U 432 (VVC, Oblt. Heinz-Otto Schultze) and U 558 (VIIC, Kptlt. Günther Krech), receive orders to operate on convoy "Thurmann".
U 126 (IXC, Kptlt. Ernst Bauer), which has recently come into the southern operational area, receives orders to operate west of Freetown, and to push on to the east along the African coast to Takoradi and Lagos.
1200 - Qu.3689AL - Days Run: 154.1sm - ↗ 152.3 (23h 17') - ↘ 1.8sm (43').
174.1cbm (3.5cbm/24h). S-Tiefe. On course 219°. 9 internal torpedoes (6xEto, 3xAto).
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Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...
- continued from 15 October 1941, 1200h - α 346°.
=> The torpedo is a hit amidships after 74 Sec.!
Steamer is burning and has a distinct list to port but continues on.
1205 - F.T. from HQ could not be heard.
1206 - Qu.3689AL - Single Shot with tube II: G7e/G7H (K-b/AZ); Running depth 3.5m; Vt30. Own course 210°; Own speed 1.6kn; Shooter: Kptlt. & Cmdr. RST.
Target ship: Position 2 M12 Freighter (has military trucks as upper deck cargo), draught 7.5m.
Target course 120°; Target distance 1196m; Target angle red90°; Target speed 6kn; Firing angle α 000°.
=> The torpedo is a miss by the bow, as the steamer has started to turn to port after the first torpedo hit on the Ore Freighter.
1207 - Qu.3689AL - Single Shot with tube III: G7e/G7H (K-b/AZ); Running depth 4.0m; Vt30. Own course 210°; Own speed 1.6kn; Shooter: Kptlt. & Cmdr. RST.
Target ship: Position 2 M12 Freighter, draught 7.5m.
Target course 120°; Target distance 1015m; Target angle red90°; Target speed 4kn; Firing angle α 349°.
=> The torpedo is a hit after 56 Sec.!
Load fire explosion after the hit, debris are flying through the air.
Right after the shot, turning the boat hard to port, in order to bring the stern tubes to bear. T=18. Full Ahead.
1210 - Qu.3689AL - Distinct sinking noises heard from the Pos.2 torpedoed M12 Freighter.
1212 - Boat is deteced by the escort ASDIC! Diving from approaching Corvette. On course 120°.
1214 - At T=130, several Wabos above and behind the boat. No concussions or damages.
1215 - At 2A+7, further Wabos astern. In all, 40 Wabos are counted.
Cmdr.: First Wabo attack for this young boat!
1238 - Back to S-Tiefe. Boat is still in good position to attack the Pos.5, M39 Freighter. Turning boat hard to port, to bring the stern tube to bear. Flooding tube V.
1244 - Qu.3689AL - Single Shot with tube V: G7e/G7H (K-b/AZ); Running depth 4.0m; Vt30. Own course 210°; Own speed 2kn astern; Shooter: Kptlt. & Cmdr. RST.
Target ship: Position 5 M39 Freighter (has a deck gun on the stern), draught 9.3m.
Target course 120°; Target distance 853m; Target angle red90°; Target speed 5kn; Firing angle α 000°.
=> The torpedo is a hit amidships after 51 Sec.!
The steamer continues on.
1255 - Running off submerged on course 75°, 1/3-Ahead.
1310 - Qu.3823AL - The Pos.5, M39 Freighter, sinks by the bow.
1314 - The Corvette runs back to the remaining convoy. All the while, apparently, no radar detection of our periscope.
1323 - O₂ = 20%.
1341 - Diving for torpedo reloading. "Dismissed from Battle Stations!". Lunch break for the watch below.
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Last edited by Kapitän; 10-16-21 at 03:56 AM.
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