Italian submarines in World War Two
Italian Commanders
Giovanni Lorenzotti
| Born | 6 Apr 1912 | Viterbo | |
| Died | 6 Dec 1942 | (30) | Killed in action |
| Ranks
Decorations
|
Career information
PORFIDO (T.V. C.O.): from 26.06.1942 to 06.12.1942 (sunk, Lorenzotti was killed).Commands listed for Giovanni Lorenzotti
| Submarine | Type | Rank | From | To |
|---|---|---|---|---|
| Porfido (PO) | Coastal / Sea going | T.V. | 26 Jun 1942 | 6 Dec 1942 |
Ships hit by Giovanni Lorenzotti
No ships hit by this Commander.War patrols listed for Giovanni Lorenzotti
| Submarine | Date | Time | Port | Arr. date | Arr. time | Arr. port | Miles | Description | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Porfido (PO) | 2 Jul 1942 | 0849 | Monfalcone | 2 Jul 1942 | 1920 | Susa (Fiume) | 130 | Passage Monfalcone-Susa. | ||
| Porfido (PO) | 4 Jul 1942 | 0853 | Susa (Fiume) | 4 Jul 1942 | 1831 | Susa (Fiume) | 32 | Exercises. | ||
| Porfido (PO) | 6 Jul 1942 | 0850 | Susa (Fiume) | 6 Jul 1942 | 1840 | Susa (Fiume) | 32 | Exercises. | ||
| Porfido (PO) | 7 Jul 1942 | 0853 | Susa (Fiume) | 7 Jul 1942 | 1815 | Susa (Fiume) | 32 | Exercises. | ||
| Porfido (PO) | 9 Jul 1942 | 0855 | Susa (Fiume) | 9 Jul 1942 | 1748 | Susa (Fiume) | 42 | Exercises. | ||
| Porfido (PO) | 10 Jul 1942 | 0801 | Susa (Fiume) | 10 Jul 1942 | 1209 | Susa (Fiume) | 28 | Exercises. | ||
| Porfido (PO) | 13 Jul 1942 | 1116 | Susa (Fiume) | 14 Jul 1942 | 0231 | Susa (Fiume) | 70 | Exercises. | ||
| Porfido (PO) | 14 Jul 1942 | 1135 | Susa (Fiume) | 14 Jul 1942 | 1526 | Susa (Fiume) | Exercises. | |||
| Porfido (PO) | 14 Jul 1942 | 2144 | Susa (Fiume) | 15 Jul 1942 | 0210 | Susa (Fiume) | 51 | Exercises [mileage includes morning sortie]. | ||
| Porfido (PO) | 16 Jul 1942 | 1130 | Susa (Fiume) | 16 Jul 1942 | 1359 | Susa (Fiume) | Exercises. | |||
| Porfido (PO) | 16 Jul 1942 | 2117 | Susa (Fiume) | 17 Jul 1942 | 0030 | Susa (Fiume) | 51 | Exercises [mileage includes morning sortie]. | ||
| Porfido (PO) | 17 Jul 1942 | 1400 | Susa (Fiume) | 17 Jul 1942 | 1830 | Susa (Fiume) | 29 | Exercises. | ||
| Porfido (PO) | 18 Jul 1942 | 0805 | Susa (Fiume) | 18 Jul 1942 | 0901 | Fiume | 4 | Passage Susa-Fiume for docking. | ||
| Porfido (PO) | 19 Jul 1942 | 0830 | Susa (Fiume) | 19 Jul 1942 | 0903 | Fiume | 4 | Undocked and passage Fiume-Susa. | ||
| Porfido (PO) | 20 Jul 1942 | 1042 | Susa (Fiume) | 20 Jul 1942 | 1730 | Susa (Fiume) | 36,5 | Exercises. | ||
| Porfido (PO) | 22 Jul 1942 | 1144 | Susa (Fiume) | 22 Jul 1942 | 1750 | Susa (Fiume) | Exercises. | |||
| Porfido (PO) | 22 Jul 1942 | 2217 | Susa (Fiume) | 23 Jul 1942 | 0130 | Susa (Fiume) | 42,5 | Exercises [mileage includes morning sortie]. | ||
| Porfido (PO) | 24 Jul 1942 | 0815 | Susa (Fiume) | 24 Jul 1942 | 1752 | Susa (Fiume) | Exercises. | |||
| Porfido (PO) | 24 Jul 1942 | 2045 | Susa (Fiume) | 25 Jul 1942 | 0104 | Susa (Fiume) | 49 | Exercises. | ||
| Porfido (PO) | 27 Jul 1942 | 0744 | Susa (Fiume) | 27 Jul 1942 | 1804 | Susa (Fiume) | 61 | Exercises. | ||
| Porfido (PO) | 29 Jul 1942 | 0636 | Susa (Fiume) | 29 Jul 1942 | 1345 | Susa (Fiume) | Exercises. | |||
| Porfido (PO) | 29 Jul 1942 | 2317 | Susa (Fiume) | 30 Jul 1942 | 0106 | Susa (Fiume) | 52 | Exercises. | ||
| Porfido (PO) | 30 Jul 1942 | 0300 | Susa (Fiume) | 31 Jul 1942 | 1617 | Susa (Fiume) | 86 | Exercises. | ||
| Porfido (PO) | 4 Aug 1942 | 1735 | Susa (Fiume) | 8 Aug 1942 | 1454 | Messina | 714 | Passage Susa-Messina. Armed with four G7e torpedoes in her forward tubes. Escorted until 1830 hours on the 4th by the torpedo boat Insidioso. | ||
| 5 Aug 1942 | 1015 1045 (e) | 42° 42'N, 15° 35'E | At 1015 hours, an enemy submarine was sighted at a distance of 1,500 metres. This was HMS Traveller (Lieutenant M.B. St. John, RN) who fired two torpedoes from 2,300 yards (they missed) and opened fire with her 4" gun, firing 26 rounds. Porfido escaped by diving after the first two rounds were fired. | |||||||
| 6 Aug 1942 | 0805+ | 40° 04'N, 18° 50'E | At 0805 hours, in heavy seas, an Italian minesweeper collided slightly with the submarine. Porfido was holed in the bunker no.4 and lost some fuel. | |||||||
| 7 Aug 1942 | 0637C (e) | At 0637C hours, HMS Traveller (Lieutenant M.B. St. John, RN) sighted a submarine of the FOCA class steering 000° at 15 knots. Three torpedoes were fired from her stern tubes (her last torpedoes) at a range of 3,000 yards but the enemy submarine changed course and they missed. Porfido was in the general area, but there is no evidence she was the submarine attacked. She was submerged at that time and would have proceeded southward. In any case, she did not observe any attack. | ||||||||
| 1. | Porfido (PO) | 17 Aug 1942 | 0245 | Messina | 19 Aug 1942 | 1205 | Trapani | 506 | Sailed escorted by A.S.66 until 0810 hours on the 18th, and patrolled off Tunisia between 37°20'N and 37°50'N and between 09°20'E and 10°20'E to intercept an enemy convoy [PEDESTAL]. On her return was met at 0815 hours on the 19th by the minesweeper R.D.19 and escorted to Trapani. | |
| 18 Aug 1942 | 0035 | At 0035 hours, a vessel was sighted on a southerly course. Porfido closed to 600 meters and was ready to fire two torpedoes from the forward tubes, when the ship was recognised as Italian and the attack was broken off. | ||||||||
| Porfido (PO) | 22 Aug 1942 | 0055 | Trapani | 22 Aug 1942 | 2003 | Cagliari | 216 | Passage Trapani-Caglliari. | ||
| 2. | Porfido (PO) | 27 Aug 1942 | 0215 | Cagliari | 8 Sep 1942 | 0920 | Cagliari | 1570 | Patrolled between between 38°40'N and 39°00'N, 00°20'E and 01°00'E. Sighted only Spanish and French ships. | |
| Porfido (PO) | 16 Sep 1942 | 1329 | Cagliari | 16 Sep 1942 | 1936 | Cagliari | 44 | Exercises. | ||
| Porfido (PO) | 23 Sep 1942 | 0758 | Cagliari | 23 Sep 1942 | 1323 | Cagliari | 36 | Exercises. | ||
| Porfido (PO) | 30 Sep 1942 | 0804 | Cagliari | 30 Sep 1942 | 1735 | Cagliari | 92 | Exercises. | ||
| Porfido (PO) | 3 Oct 1942 | 1345 | Cagliari | 3 Oct 1942 | 1819 | Cagliari | 31 | Exercises. | ||
| Porfido (PO) | 5 Oct 1942 | 0800 | Cagliari | 5 Oct 1942 | 1232 | Cagliari | 34,5 | Exercises. | ||
| Porfido (PO) | 15 Oct 1942 | 0800 | Cagliari | 15 Oct 1942 | 1225 | Cagliari | 33 | Exercises. | ||
| Porfido (PO) | 22 Oct 1942 | 0820 | Cagliari | 22 Oct 1942 | 1230 | Cagliari | 34 | Exercises. | ||
| 3. | Porfido (PO) | 29 Oct 1942 | 0225 | Cagliari | 31 Oct 1942 | 0640 | Cagliari | 267 | Patrolled off La Galite, between 37°20'N and 37°40'N, and between 08°30'E and 08°50'E, but recalled at 2000 hours on the 30th. Uneventful. | |
| 4. | Porfido (PO) | 7 Nov 1942 | 0350 | Cagliari | 19 Nov 1942 | 1330 | Cagliari | ? | Patrolled off Philippeville, between 37°25'N and 37°35'N, and between 07°00'E and 07°30'E. | |
| 8 Nov 1942 | 0926 | At 0926 hours, an aircraft was seen and the submarine dived and heard bomb explosions. | ||||||||
| 8 Nov 1942 | 1550 | At 1550 hours, a vessel was sighted at distance of 8,000 metres. It was thought to be a German 6,000-ton ship. | ||||||||
| 8 Nov 1942 | 1820 | At 1820 hours, an Italian submarine was sighted at a distance of 8,000 metres and exchanged recognition signals. | ||||||||
| 9 Nov 1942 | 0534 | 37° 12'N, 4° 42'E | At 0534 hours, two MTBs were sighted and the submarine dived. | |||||||
| 9 Nov 1942 | 2040 | 37° 12'N, 4° 41'E | At 2040 hours, a destroyer or corvette was sighted at a distance of 800 metres. Porfido dived. | |||||||
| 5. | Porfido (PO) | 2 Dec 1942 | 2025 | Cagliari | 6 Dec 1942 | 0147 | Sunk | Sailed for patrol between 37°00'N and 37°20'N, and between 05°00'E and 05°20'E (Grid 2124) and was to have returned on 22nd December (the patrol was later shortened to 13th December, but by then the submarine had been sunk). Sunk off Galita Island by the British submarine HMS Tigris. Four survivors. Five officers (including T.V. Lorenzotti) and thirty-nine ratings killed. | ||
| 6 Dec 1942 | 0146.5 | At 0143 hours, Lieutenant R. G. Sampson, officer of the watch of HMS Tigris (Lieutenant Commander G.R. Colvin) sighted a vessel broad on the port bow and immediately recognised it to be a submarine head-on. At 0146.5 hours, two torpedoes were fired at a range of 600 yards. One hit and sank the submarine. This was Porfido. G.M. Ermanno Devescovi and three ratings survived and were picked by the British submarine. T.V. Giovanni Lorenzotti, four officers and thirty-nine ratings perished. | ||||||||
43 entries. 37 total patrol entries (5 marked as war patrols) and 10 events.