[Kapitän]

Originally Posted by Kapitän

Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

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U 115
- KTB -
First War Patrol
(17th war patrol overall)

Wednesday, 17 March 1943 - Northern North-Sea

0535 - Morning Dawn. Setting 3/4-Moon in NW.

0713 - Sunrise. Weather and Sea unchanged in 24h.

0715 - Qu.7352AF - Diving for torpedo maintenance.

1020 - Bow tubes serviced - break.

1030 - Servicing of stern tubes until 1200.

1200 - Qu.7351AF - Days Run: 206.9 nm - ↗ 193.7sm (19h 15') - ↘ 13.2sm (4h 45')
Total: 1130.4 nm (110h 17') - ↗ 1108.3nm (102h 54') - ↘ 22.1nm (7h 23')
On course 288°; 493cbm (6cbm in 24h)

1201 - CO₂ Warning at 1.7% (after 4h 45').

1300 - Setting for reception depth. At 1305 T=20.

1315 - Surfaced from S-Tiefe after 1h 15' and 3.6nm
(Total: 6h and 16.8nm); Weather and Sea unchanged in 1day/6h.

1316 - Boat ventilated.

1323 - Crash dive for training.

1324 - A-10, 96rpm.

1327 - Setting for reception depth. T=20 at 1332.

1338 - Surfaced from S-Tiefe after 15min. and 1nm.

1340 - Boat ventilated; Compressed air supply filled; Battery 80%.

1342 - Charging batteries: Stbd.Diesel Charging, 496RPM; Port Diesel Propulsion, 375RPM/10kn.

1552 - Batteries charged: 2h 10' for 20%. 1/3-Ahead/10kn.

1713 - Qu.7311AF bottom right - ALARM! from Flying Boat (Sunderland) approaching from 295°true. Diving at E=7900. No FuMB Detection (also, no Magic Eye). At T=60 two loud Wabo detonations.

1717 - At A-Meter, further Wabos and again at 1720 - no damages. Boat remains submerged.

1813 - Setting for Reception Depth. T=20 at 1818.

1828 - Surfaced from S-Tiefe after 1h 15' and 3.8nm.

1829 - Boat ventilated; Compressed air supply filled; Battery 97%.

1842 - Qu.7311AF center - Diving due to FuMB detection in 136°true, E=15400 (no Magic Eye).

1847 - At A-Meter no Wabos.

1855 - Sundown.

1857 - Setting for Reception Depth. T=20 at 1902.

1907 - Surfaced from S-Tiefe after 25' and 1.4nm.
Battery 94%.

2028 - Switched to Ireland Circuit as ordered.

2030 - Outgoing F.T.: To B.d.U.:
Switched to Irland Circuit. At 1713 Alarm from Sunderland in 295°true, no FuMB and Magic Eye detection. At A-20 and A-Meter Wabos, no damages, Qu.7311AF center right. At 1842 diving due to FuMB Detection, at A-Meter no Wabos, Qu.7311AF center. 491cbm. N4/3, clear, good visibility, >1000mb. Continue outbound transit. - RST -

2300 - Qu.4895AF top left - Crossed Prime Meridian.

2303 - F.T. from B.d.U.: OKW-Report:
Japanese forces attack British positions in Arakan, West-Burma, forcing Indian troops to fall back. US troops captured Gafsa, Tunisia. 90 Luftwaffe bombers attacked Cardiff, Wales.

RST
KorvKpt.& Cmdr. U 115

Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Thursday, 18 March 1943 - Norwegian Sea -

- 1st week at sea completed -

0535 - Morning Dawn. Setting 3/4-Moon in NW.

0722 - Sunrise. Weather and Sea unchanged in 48h.

0810 - Crash Dive for Training.

0815 - Setting for Reception Depth. T=20 at 0820.

0825 - Surfaced from S-Tiefe after 15' and 1.1nm.

0826 - Compressed Air Supply filled.

1126 - Qu.4499AF bottom right - ALARM! from Sunderland in 330°true, E=9000, first on southerly heading, then turning toward the boat. No FuMB Detection (also, no Magic Eye).

1128 - At A-10 two Wabos and at 1131 and 1134 further Wabos - no damages. Boat remains submerged.

1200 - Qu.4499AF - Days Run: 213.7 nm - ↗ 201.0nm (20h) - ↘ 12.7nm (4h)
Total: 1344.1 nm (5days 14h 17') - ↗ 1309.3nm (5 days 2h 54') - ↘ 34.8nm (11h 23')
On course 288°; 485cbm (8cbm in 24h)

1300 - Setting for Reception Depth. T=20 at 1305.

1311 - Surfaced from S-Tiefe after 1h 11' and 3.4nm - since Etmal (Total 1h 45', 5.2 nm).

1313 - Boat ventilated and Compressed Air Supply filled; Battery 90%.

1320 - Testing of main diesels acc. B.d.U.-Standing Order No. 510:
2xH.F., 375RPM, 13kn; G.F., 450RPM, 16kn; A.K., 496RPM, 17.5kn, for 30min. - all okay.

1512 - Qu.4495AF top left - FuMB detection in 166°true, E=13100 (no Magic Eye). Just before closing the C/T hatch, a twin A/C is sighted at E=6800.

1514 - At T=40 Wabos far off.

1515 - At A-Meter no damages.

1521 - Further Wabos far off are heard.

1555 - Setting for Reception Depth. T=20 at 1600.

1612 - Surfaced from S-Tiefe after 1h and 3.0nm.
Directly after surfacing, FuMB signals (Magic Eye) and a A/C is sighted in 130°true, E=13000, flying off on a southerly heading.

1613 - Boat ventilated; Battery 88.5%.

1645 - Qu.4491AF center right - FuMB Warning (no Magic Eye) and at 1646 A/C sighted in 230°true, E=12700, first on course N and at E=10000 turns towards the boat. Diving from approaching A/C. At A-20, four Wabos and further on at A-Meter, another 2x2 Wabos until 1651 - no damages.

Cmdr.: Certainly a well patrolled area. FuMB and lookout crew are working well together.

1700 - Setting for Reception Depth. T=20 at 1705.

1711 - Surfaced from S-Tiefe after 25' and 1.3nm.

1716 - 2xH.F. (Cmdr.: Need to make up for lost ground)

1720 - Qu.4491AF center - ALARM! from Sunderland in 15°true, E=8000, on course SSW. No FuMB Detection (also, no Magic Eye).

1722 - At A-Meter three Wabos and two more at 1723 - no damages.

1730 - Setting for Reception Depth. T=20 at 1735.

1740 - Surfaced from S-Tiefe after 20' and 1.4nm.

1742 - Compressed Air Supply filled.

1745 - 2xH.F.

1817 - Qu.4459AF bottom right - Sunderland approaching boat from 200°true. No FuMB Detection (also, no Magic Eye). Is already pretty close, E=7000. Turning with A.K. toward the attacking A/C. Machine Gun fire, 4 Wabos fall wide behind the boat. Immediately after the fly-over, ALARM! At A-20 further four Wabos.

Cmdr.: Turning towards the attacking A/C caused the Wabos to overshoot the boat.

1820 - At A-Meter, hull damage is assessed at 2%. This means that the boat now has a safe diving depth of max.215m!

1845 - Submerged cruise at A-20.

1900 - Inspection of Pi-G7H pistols acc. Standing B.d.U. Order No.307: 4 AtoFat under the bow and 3 AtoFat under the stern floor plates.

1915 - Sundown.

2002 - All Bow AtoFat Pi-G7H checked and found operational.

2100 - All Stern AtoFat Pi-G7H checked and found operational. Lights-Out for the Off-Watch.

2300 - CO₂ Warning at 1.7% (after 4h 43min.); Battery: 75.7%.

RST
KorvKpt.& Cmdr. U 115