Atropo (AT, N.51)
Atropo

Type	Minelaying
Class	Foca (32)
Laid down	10 Jul 1937	Cantieri Navale Tosi di Taranto, Taranto
Launched	20 Nov 1938
Commissioned	14 Feb 1939
End service
Stricken	1 Feb 1948
Loss date
Loss position
History	Stricken on 1st February 1948.
Fate

Commands

Commander	Date from	Date to	Command notes
C.F. Luigi Caneschi	1 Jan 1940	18 Sep 1940
C.C. Peppino Manca	18 Sep 1940	22 Nov 1940
C.C. Bandino Bandini	23 Nov 1940	24 Jun 1941
C.C. Guido D'Alterio	25 Jun 1941	3 Aug 1941
T.V. Libero Sauro	4 Aug 1941	30 Nov 1941
S.T.V. Luigi Reni	1 Dec 1941	28 Dec 1941
S.T.V. Pier Vittorio Casarini	29 Dec 1941	19 Jan 1942
S.T.V. Mario Kenda	20 Jan 1942	31 Jan 1942
T.V. Mario Priggione	1 Feb 1942	18 Feb 1942
T.V. Mario Biagini	19 Feb 1942	7 Apr 1942
C.F. Candido Corvetti	8 Apr 1942	15 Apr 1942
C.C. Pietro Abate	16 Apr 1942	6 Oct 1942
T.V. Mario Biagini	7 Oct 1942	30 Nov 1942
S.T.V. Mario Kenda	1 Dec 1942	16 Dec 1942
C.C. Pietro Abate	16 Dec 1942	4 May 1943
C.C. Raul Galletti	3 May 1943	20 May 1943
T.V. Armando Rosso	19 May 1943	5 Jun 1943
T.V. Emerico Siriani	5 Jun 1943	19 Jun 1943
T.V. Gino Ferrari	19 Jun 1943	13 Jul 1943
C.C. Rino Erler	13 Jul 1943	20 Aug 1943
T.V. Aredio Galzigna	22 Aug 1943	Nov 1945

Ships hit

No ships hit by this submarine.

Patrols and events

	Commander	Date	Time	Port	Arr. date	Arr. time	Arr. port	Miles	Description
	Caneschi, Luigi	10 Jun 1940	1050	Taranto	10 Jun 1940	1240	Taranto	5,4	Exercises.
1	Caneschi, Luigi	22 Jun 1940	1100	Taranto	26 Jun 1940	0700	Leros	643,1	Supply mission to Leros, brought 27 tons of ammunition and stores.
		26 Jun 1940	0245 0330 (e)	36° 51'N, 26° 19'E	At 0245 hours, Atropo was proceeding on the surface with her electric motors, when a submarine was sighted proceeding on the surface at 11 knots. Two bow (533mm) torpedoes were fired at a distance of 1,100 metres (only two forward tubes were loaded). They missed. The target was the French submarine Achéron (Capitaine de corvette Jean Joseph Marie Alliou) returning to Beirut after a patrol off Leros.
	Caneschi, Luigi	30 Jun 1940	1050	Leros	30 Jun 1940	1115	Leros	3,5	Exercises.
	Caneschi, Luigi	12 Jul 1940	0900	Leros	12 Jul 1940	1055	Leros	3,3	Exercises.
1b	Caneschi, Luigi	15 Jul 1940	1816	Leros	27 Jul 1940	1200	Taranto	1188,6	Return trip from supply mission and patrol in Cerigotto Channel in 36°00'N, 23°30'E.
	Caneschi, Luigi	5 Aug 1940	0740	Taranto	5 Aug 1940	1140	Taranto	26,5	Exercises.
	Caneschi, Luigi	15 Aug 1940	0830	Taranto	15 Aug 1940	1145	Taranto	13,2	Exercises.
2	Caneschi, Luigi	27 Aug 1940	1120	Taranto	1 Sep 1940	0850	Rhodes	740,25	Supply mission to Rhodes. Uneventful.
2b	Caneschi, Luigi	2 Sep 1940	2100	Rhodes	3 Sep 1940	0730	Leros	106	Passage Rhodes-Leros.
2c	Caneschi, Luigi	10 Sep 1940	1700	Leros	14 Sep 1940	1300	Taranto	655,6	Return trip from supply mission to Leros.
	Manca, Peppino	21 Oct 1940	0825	Taranto	21 Oct 1940	1550	Taranto	42	Exercises.
	Manca, Peppino	25 Oct 1940	0900	Taranto	25 Oct 1940	1125	Taranto	8,2	Exercises.
3	Manca, Peppino	27 Oct 1940	1100	Taranto	31 Oct 1940	0030	Taranto	650,5	Minelaying operation southeast of Zante. Interrupted after the explosion of two of her mines.
		29 Oct 1940	0839	37° 50'N, 21° 05'E	At 0839 hours, Atropo was laying a minefield from 37°50'50" N, 21°05'20" E to 37°50'50" N, 21°04' 30" E (off Zante) when the premature explosions of two mines interrupted the mission. This was minefield J 6 A N and three groups of eight mines and two groups of six mines of the T.800 type were to be laid for a total of 36 mines. Only 16 mines were laid before the accident occurred. The accident was viewed with great concern and it was suspected that the submarine Foca, who had failed to return from a similar mission, may have been victim of a similar accident. The Italian High Command decided to cancel future minelaying missions and the submarines of this class would be used in transport missions instead. No offensive minelaying missions would be carried out by Italian submarines for the remainder of the war. Just before the Armistice, Atropo was scheduled to lay an experimental defensive minefield. It is not certain if this was ever carried out as relevant documents are lost.
	Manca, Peppino	1 Nov 1940		Taranto	1 Nov 1940		Taranto		The Duce visited the submarine to enthusiastic acclaims.
		1 Nov 1940		(0) At Taranto.	During the day, the Duce passed in review the crew of Atropo to enthusiastic applause.
	Manca, Peppino	8 Nov 1940	0806	Taranto	8 Nov 1940	1300	Taranto	33,6	Exercises.
	Manca, Peppino	22 Nov 1940	0800	Taranto	22 Nov 1940	1310	Taranto	20,5	Exercises.
4	Bandini, Bandino	23 Nov 1940	0645	Taranto	27 Nov 1940	1220	Leros	714	Storing trip Taranto-Leros. Uneventful.
	Bandini, Bandino	2 Dec 1940	1500	Leros	2 Dec 1940	1620	Leros	5	Exercises.
4b	Bandini, Bandino	3 Dec 1940	0140	Leros	8 Dec 1940	1740	Taranto	821	Return voyage from storing trip Leros-Taranto and brief patrol in 35°30'N, 26°30'E.
	Bandini, Bandino	22 Dec 1940	0755	Taranto	22 Dec 1940	1545	Taranto	46	Exercises.
	Bandini, Bandino	23 Dec 1940	0805	Taranto	23 Dec 1940	1500	Taranto	46	Exercises.
	Bandini, Bandino	26 Dec 1940	0805	Taranto	26 Dec 1940	1610	Taranto	49	Exercises.
5	Bandini, Bandino	27 Dec 1940	0810	Taranto	27 Dec 1940	1240	Taranto	27,7	Laid an experimental mine field. Then refit until March 1941.
	Bandini, Bandino	14 Mar 1941	0840	Taranto	14 Mar 1941	1435	Taranto	34,5	Exercises.
	Bandini, Bandino	31 Mar 1941	0838	Taranto	31 Mar 1941	1600	Taranto	28,5	Exercises.
	Bandini, Bandino	11 Apr 1941	0836	Taranto	11 Apr 1941	1537	Taranto	45,2	Exercises, escorted by the pilot vessel Limbara.
	Bandini, Bandino	3 May 1941	0525	Taranto	3 May 1941	1948	Taranto	156,53	Exercises.
	Bandini, Bandino	5 May 1941	0831	Taranto	5 May 1941	1507	Taranto	53,9	Exercises, escorted by the pilot vessel Limbara.
6	Bandini, Bandino	9 May 1941	2238	Taranto	12 May 1941	1909	Derna		Storing trip Taranto to Derna with 78 tons of ammunition. Uneventful.
6b	Bandini, Bandino	13 May 1941	0700	Derna	15 May 1941	1515	Taranto	1131	Return trip from supply mission to Derna. Uneventful (mileage total).
7	Bandini, Bandino	18 May 1941	0625	Taranto	20 May 1941	2100	Derna		Storing trip Taranto to Derna with 79 tons of ammunition. Uneventful.
7b	Bandini, Bandino	21 May 1941	0648	Derna	24 May 1941	1320	Taranto	1155	Return trip from supply mission to Derna (mileage total).
		22 May 1941	0825 0930 (e)	35° 16'N, 20° 52'E	At 0825 hours, four warships were sighted at a distance of 8-9,000 metres. Atropo crash-dived and was hunted from 0850 to 1920 hours but escaped damage. These were actually five destroyers of the 5th Flotilla: HMS Kelly (D.5), HMS Kashmir, HMS Kelvin, HMS Kipling and HMS Janus. They dropped 50 depth charges.
8	Bandini, Bandino	5 Jun 1941	0533	Taranto	7 Jun 1941	2010	Derna		Passage Taranto to Derna with 40 tons of ammunition. Uneventful.
8b	Bandini, Bandino	8 Jun 1941	0012	Derna	10 Jun 1941	1100	Taranto	1151,9	Return trip from supply mission to Derna (mileage total).
		10 Jun 1941	0300	(0) 12 miles south Cape Santa Maria di Leuca.	At 0300 hours, an enemy submarine was sighted. There were none in the area. This was probably Adua on passage from Taranto to Pola and she was actually seen again at 0435 hours.
9	Bandini, Bandino	13 Jun 1941	1002	Taranto	15 Jun 1941	2131	Derna		Passage Taranto to Derna with 68 tons of ammunition. Uneventful.
9b	Bandini, Bandino	16 Jun 1941	0320	Derna	19 Jun 1941	1110	Taranto	1166	Return trip from supply mission to Derna. Uneventful (mileage total).
10	D'Alterio, Guido	25 Jun 1941	0925	Taranto	27 Jun 1941	2100	Derna		Passage Taranto to Derna with 40 tons of ammunition.
		26 Jun 1941	1515	35° 40'N, 19° 22'E	At 1515 hours, two derelict mines were sighted and machine gunned. One was perhaps sunk.
10b	D'Alterio, Guido	28 Jun 1941	0150	Derna	1 Jul 1941	1109	Taranto	1045	Return trip from supply mission to Derna. Uneventful (mileage total).
	D'Alterio, Guido	9 Jul 1941	0935	Taranto	9 Jul 1941	1620	Taranto	48	Exercises.
	D'Alterio, Guido	10 Jul 1941	1030	Taranto	10 Jul 1941	1155	Taranto	8	Exercises.
	D'Alterio, Guido	14 Jul 1941	0911	Taranto	14 Jul 1941	1459	Taranto	43	Exercises.
	D'Alterio, Guido	17 Jul 1941	0940	Taranto	17 Jul 1941	1443	Taranto	43	Exercises.
11	D'Alterio, Guido	19 Jul 1941	1228	Taranto	20 Jul 1941	1044	Taranto	218	Supply mission to Bardia but then recalled. Uneventful
11b	D'Alterio, Guido	21 Jul 1941	1145	Taranto	23 Jul 1941	2330	Derna		Passage Taranto to Derna with 47 tons of ammunition.
		22 Jul 1941	0920+	34° 47'N, 19° 43'E	At 0920 hours, a derelict mine was sighted and 30 rounds of 13.2mm and 20 rounds of 6.5mm ammunition were expended. It was probably sunk.
		22 Jul 1941	2220	34° 47'N, 19° 43'E	At 2220 hours, a Sunderland was sighted. It flashed the signal "O" and the submarine replied with "U". The sunderland came back and signalled "U" and this time the submarine replied with "O". The aircraft appeared to have been satisfied and flew away.
		23 Jul 1941	2200	33° 00'N, 22° 36'E	At 2200 hours, a small vessel was sighted on a westerly course. Atropo made an enemy report.
11c	D'Alterio, Guido	25 Jul 1941	0305	Derna	27 Jul 1941	1245	Taranto	1163	Return trip from supply mission to Derna. Uneventful (mileage total).
	Sauro, Libero	5 Aug 1941	0732	Taranto	5 Aug 1941	1530	Taranto	30	Exercises.
	Sauro, Libero	6 Aug 1941	0805	Taranto	6 Aug 1941	1434	Taranto	25,5	Trials, escorted by the pilot vessel Limbara.
	Sauro, Libero	7 Aug 1941	1248	Taranto	7 Aug 1941	1720	Taranto	18	Exercises.
12	Sauro, Libero	12 Aug 1941	1230	Taranto	16 Aug 1941	2155	Bardia	1266,5	Supply mission to Bardia with 44 tons of petrol. Uneventful. The German war correspondent, Wilhelm Brink, was a passenger. On 14th August, the diesels emitted smoke and, with the wind in their back, greatly impeded the forward visibility. The submarine arrived off Bardia during an air raid. Through ULTRA, it was known that an Italian submarine was expected in Bardia on the evening of 15th August. Consequently, five Albacore of 826 Squadron armed with torpedoes had been flown to Ma'aten Bagush, to stand by to attack it when this was confirmed. They took off the same evening with two Blenheim bombers of 113 Squadron and attacked Bardia, but Atropo arrived only the following evening. During the night of 15/16th, a Wellington of 38 Squadron bombed a supposed submarine in Bardia harbour.
12b	Sauro, Libero	17 Aug 1941	0240	Bardia	20 Aug 1941	1521	Taranto	1539	Return trip from supply mission to Bardia (with a German passenger, the soldier Heinz Bollig on furlough). Uneventful.
	Sauro, Libero	9 Oct 1941	0825	Taranto	9 Oct 1941	1420	Taranto	35	Exercises, escorted by the auxiliary Sparviero.
	Sauro, Libero	14 Oct 1941	0830	Taranto	14 Oct 1941	1800	Taranto	53,5	Exercises.
	Sauro, Libero	15 Oct 1941	0900	Taranto	15 Oct 1941	1715	Taranto	65	Exercises.
	Sauro, Libero	16 Oct 1941	1700	Taranto	16 Oct 1941	1850	Taranto	11	Exercises.
13	Sauro, Libero	17 Oct 1941	1237	Taranto	22 Oct 1941	0230	Bardia		Supply mission to Bardia with 57 tons of petrol (2987 x 20-litre cans).
		19 Oct 1941	0910 0904 (e)	34° 29'N, 22° 30'E	At 0910 hours, an aircraft was sighted on an opposite course at a distance of 3-4,000 metres. It was recognised as a Bristol Blenheim bomber and it flew over the submarine at a height of 50 metres and dropped two bombs, which fell under the submarine but failed to explode. Atropo replied with her machine guns. The aircraft made a second run, remaining at a distance of 1,000 metres just using its machine guns but its fire was short by 50 metres. The aircraft then flew toward Malta and when it was 5-6,000 metres distant, the submarine dived. This was actually a Beaufort of 39 Squadron piloted by Pilot Officer Bone. Sighting the submarine steering 170° at 5 knots, it had immediately attacked and claimed a near miss by 2 yards. The aircraft fired at the submarine with its rear gun and was replied with machine guns and even the deck gun. At 1005 hours, Atropo returned to periscope depth. No aircraft were sighted so she surfaced and resumed her course.
		19 Oct 1941	1148	34° 15'N, 22° 50'E (0) Approximately.	At 1148 hours, an aircraft was seen at a distance of 6-7,000 metres and the submarine dived.
13b	Sauro, Libero	23 Oct 1941	0715	Bardia	26 Oct 1941	1310	Taranto	1527	Return trip from supply mission to Bardia. Uneventful (mileage total).
	Sauro, Libero	6 Nov 1941	0941	Taranto	6 Nov 1941	1145	Taranto	15	Exercises.
14	Sauro, Libero	13 Nov 1941	1040	Taranto	17 Nov 1941	1730	Navarino (originally to Bardia but diverted to Navarino)		Supply mission to Bardia (60 tons of petrol), but an accidental explosion of the battery forced the submarine to go to Navarino, escorted from 1700 hours on 17th by the destroyer Da Verazzano. An ULTRA intercept dated 15th November reported her going to Bardia.
		16 Nov 1941	0400	(0) Off Morea.	At 0400 hours, while Atropo was proceeding on the surface, there was an accidental battery explosion. Two ratings were killed and three wounded. The submarine was instructed by MARICOSOM to proceed to Navarino for repairs. SUPERMARINA ordered the destroyers Pigafetta and Da Verrazano to her assistance.
14b	Sauro, Libero	19 Nov 1941	0600	Navarino	20 Nov 1941	1433	Taranto	1254	Return trip for repairs (mileage total).
	Reni, Luigi	1 Dec 1941		Taranto	28 Dec 1941		Taranto		At Taranto for repairs.
	Casarini, Pier Vittorio	29 Dec 1941		Taranto	19 Jan 1942		Taranto		At Taranto for repairs.
	Kenda, Mario	20 Jan 1942		Taranto	31 Jan 1942		Taranto		At Taranto for repairs.
	Priggione, Mario	1 Feb 1942		Taranto	18 Feb 1942		Taranto		At Taranto for repairs.
	Biagini, Mario	6 Apr 1942	0815	Taranto	6 Apr 1942	1158	Taranto	7,5	Trials.
	Corvetti, Candido	11 Apr 1942	0916	Taranto	11 Apr 1942	1646	Taranto	36,5	Trials escorted by MAS D.3.
	Abate, Pietro	16 Apr 1942	0855	Taranto	16 Apr 1942	1700	Taranto	45,5	Trials, escorted by the minesweeper R.D.13.
	Abate, Pietro	19 Apr 1942	0705	Taranto	19 Apr 1942	1325	Taranto	34,5	Exercises with the submarine Bronzo in 40°28'30'N, 17°02'E. Returned briefly at 1233-1237 hours and sailed again with MAS 539.
	Abate, Pietro	23 Apr 1942	0715	Taranto	23 Apr 1942	1020	Taranto	7,2	Trials.
	Abate, Pietro	2 May 1942	0900	Taranto	2 May 1942	1047	Taranto	2,2	Trials.
	Abate, Pietro	14 May 1942	0906	Taranto	14 May 1942	1035	Taranto	2,4	Trials.
	Abate, Pietro	28 May 1942	0900	Taranto	28 May 1942	1030	Taranto	2,5	Trials.
	Abate, Pietro	29 May 1942	0815	Taranto	29 May 1942	1820	Taranto	45	Trials and exercises, escorted by the minesweeper R.D.30.
	Abate, Pietro	30 May 1942	0815	Taranto	30 May 1942	1218	Taranto	6,2	Trials.
	Abate, Pietro	8 Jun 1942	0815	Taranto	8 Jun 1942	1705	Taranto	56	Exercises.
15	Abate, Pietro	14 Jun 1942	0830	Taranto	18 Jun 1942	1410	Taranto	797	Patrolled southeast of Malta to intercept en enemy convoy. Uneventful.
		17 Jun 1942	0930		At 0930 hours, a derelict mine was seen and sunk by machine gun fire.
	Abate, Pietro	20 Jun 1942	1330	Taranto	20 Jun 1942	1535	Taranto	8	Sailed for patrol, but then recalled.
16	Abate, Pietro	23 Jun 1942	1040	Taranto	26 Jun 1942	2020	Derna		Supply mission to Derna with 52.8 tons of petrol. Uneventful. ULTRA sigint had learnt that Italian submarines Atropo, Bragadino, Corridoni and Zoea were used to transport stores to Derna and were passing through 33°20’N, 22°40’E.
16b	Abate, Pietro	27 Jun 1942	0200	Derna	30 Jun 1942	1240	Taranto	1175,5	Return trip from supply mission to Derna (mileage total).
		27 Jun 1942	1400		At 0930 hours, a derelict mine was seen through the periscope. Atropo surfaced and sank it by machine gun fire.
17	Abate, Pietro	6 Jul 1942	1115	Taranto	9 Jul 1942	2015	Derna (harbour entrance)		Supply mission to Derna, but was diverted to Ras Hilal, Derna and Tobruk with 51.4 tons of petrol and one ton of jam. The submarine arrived off Derna but was very quickly ordered to Ras Hilal instead. Uneventful.
17b	Abate, Pietro	9 Jul 1942	2100	Derna	10 Jul 1942	0730	Marsa El Hilal		Passage Derna-Marsa El Hilal. Uneventful.
17c	Abate, Pietro	11 Jul 1942	2015	Marsa El Hilal	13 Jul 1942	0900	Tobruk		Passage Marsa El Hilal-Mersa Matruh, but at 2140 hours on 12th July, she was ordered to turn back and go to Tobruk (this was due to the blowing up of the German steamer Brook).
		13 Jul 1942	1800+	(0) Tobruk harbour.	At 1800 hours, the harbour came under air attack by five Blenheim bombers. Atropo could not use her machine guns as they stayed out of range at over 4,000 metres.
17d	Abate, Pietro	13 Jul 1942	1800	Tobruk	16 Jul 1942	1145	Taranto	1555	Return trip from supply mission to Ras Hilal, Derna and Tobruk. Apparently sailed with Narvalo, but then went ahead (mileage total).
		13 Jul 1942	1800+	(0) Tobruk harbour.	At 1800 hours, the harbour came under air attack by five Blenheim bombers. Atropo could not use her machine guns as they stayed out of range at over 4,000 metres.
18	Abate, Pietro	21 Jul 1942	1120	Taranto	24 Jul 1942	0100	Derna		Supply mission to Derna and Ras Hilal with 50 (or 54?) tons of petrol. At 2115 hours on 22nd July, she was ordered to proceed to Derna by staying north of 35°00'N and west of 21°00'E. Uneventful.
		23 Jul 1942	0940		At 0940 hours, three Italian aircraft were seen and exchanged recognition signals.
18b	Abate, Pietro	24 Jul 1942	2000	Derna	25 Jul 1942	0610	Ras Hilal		Passage Derna-Taranto, but diverted to Ras Hilal for repairs of defective diesel.
		25 Jul 1942	0535	(0) Off Ras Hilal.	At 0535 hours, the coastal batteries at Ras Hilal opened fire on Atropo, firing two salvoes of two rounds each, as warning shots to order the submarine to stop. They had not been informed of her arrival. They ceased fire when the Italian flag flying from the periscope was seen. The submarine had purposely awaited daybreak to make sure that she would be recognised by the coastal battery.
18c	Abate, Pietro	25 Jul 1942	2200	Ras Hilal	28 Jul 1942	1110	Taranto	1191	Return trip from supply mission to Derna and Ras Hilal via 34°50'N, 22°10'E. Uneventful (mileage total).
		25 Jul 1942	0535	(0) Off Ras Hilal.	At 0535 hours, the coastal batteries at Ras Hilal opened fire on Atropo, firing two salvoes of two rounds each, as warning shots to order the submarine to stop. They had not been informed of her arrival. They ceased fire when the Italian flag flying from the periscope was seen. The submarine had purposely awaited daybreak to make sure that she would be recognised by the coastal battery.
		26 Jul 1942	1210	34° 50'N, 22° 10'E	At 1210 hours, an Italian aircraft was seen and exchanged recognition signals.
	Abate, Pietro	10 Aug 1942	1230	Taranto	10 Aug 1942	1640	Taranto	25	Trials.
19	Abate, Pietro	12 Aug 1942	1855	Taranto	15 Aug 1942	1000	Tripoli		Supply mission to Tripoli with 51.74 tons of petrol. Uneventful.
19b	Abate, Pietro	15 Aug 1942	1600	Tripoli	18 Aug 1942	1530	Taranto	1354	Return trip from supply mission to Tripoli. Uneventful (mileage total).
20	Abate, Pietro	1 Sep 1942	1105	Taranto	4 Sep 1942	0800	Benghazi		Supply mission to Benghazi with 78 tons of stores. Uneventful.
20b	Abate, Pietro	4 Sep 1942	1530	Benghazi	7 Sep 1942	1200	Taranto	1213	Return trip from supply mission to Benghazi (mileage total).
		5 Sep 1942	1630		At 1630 hours, a steamer was sighted and chased until 1700 hours when she turned out to be an Italian hospital ship.
21	Abate, Pietro	15 Sep 1942	1100	Taranto	18 Sep 1942	0800	Benghazi		Supply mission to Benghazi with 67 tons of stores.
		16 Sep 1942	2300		At 2300 hours, an Italian hospital ship was observed on a NW course.
21b	Abate, Pietro	19 Sep 1942	1700	Benghazi	22 Sep 1942	1130	Taranto	1147	Return trip from supply mission to Benghazi. Uneventful (mileage total).
22	Biagini, Mario	9 Oct 1942	1130	Taranto	12 Oct 1942	0840	Benghazi		Supply mission to Benghazi with 38.9 tons of stores. Uneventful.
22b	Biagini, Mario	12 Oct 1942	1630	Benghazi	15 Oct 1942	1700	Taranto	1154	Return trip after supply mission. Uneventful (mileage total).
23	Biagini, Mario	23 Oct 1942	1055	Taranto	26 Oct 1942	1055	Tripoli		Supply mission to Benghazi, but diverted to Tripoli with 50.502 tons of petrol for Italian Army. Document shows it as 23rd patrol. Uneventful.
23b	Biagini, Mario	27 Oct 1942	1350	Tripoli	30 Oct 1942	1530	Taranto	1171	Return trip after supply mission (mileage total).
		29 Oct 1942	1310		At 1310 houra, an Italian hospital ship was sighted at a distance of 6,000 metres, steering 130°.
24	Biagini, Mario	10 Nov 1942	1115	Taranto	13 Nov 1942	0800	Tripoli		Supply mission to Benghazi (or Tobruk?), but then diverted to Tripoli (through 36°38'N, 19°46'E) with 45.818 tons of stores and ammunition. Uneventful.
24b	Biagini, Mario	14 Nov 1942	1350	Tripoli	16 Nov 1942	1605	Taranto	1254	Return trip from supply mission. Uneventful. Heard only distant explosions (mileage total).
	Kenda, Mario	1 Dec 1942		Taranto	16 Dec 1942		Taranto		In Taranto for refit and repairs.
	Abate, Pietro	3 Feb 1943	0900	Taranto	3 Feb 1943	1240	Taranto	23	Trials.
	Abate, Pietro	4 Feb 1943	0915	Taranto	4 Feb 1943	1215	Taranto	13	Trials.
	Abate, Pietro	6 Feb 1943	0833	Taranto	6 Feb 1943	1545	Taranto	42,5	Trials.
	Abate, Pietro	9 Feb 1943	0905	Taranto	9 Feb 1943	1700	Taranto	66,5	Trials.
	Abate, Pietro	19 Feb 1943	0830	Taranto	19 Feb 1943	1450	Taranto	32	Sonar exercises with the torpedo boat Antares.
	Abate, Pietro	21 Feb 1943	0530	Taranto	21 Feb 1943	1250	Taranto	25	Sonar exercises with the destroyer Granatiere and the torpedo boat Antares.
	Abate, Pietro	22 Feb 1943	0745	Taranto	22 Feb 1943	1245	Taranto	22,5	Sonar exercises with the destroyer Granatiere and the torpedo boat Antares.
	Abate, Pietro	4 Mar 1943	0745	Taranto	4 Mar 1943	1245	Taranto	24	Sonar exercises with the torpedo boat Perseo.
	Abate, Pietro	30 Mar 1943	0830	Taranto	30 Mar 1943	1200	Taranto	17	Laid an experimental minefield.
	Abate, Pietro	31 Mar 1943	1445	Taranto	31 Mar 1943	1915	Taranto	25	Sonar exercises with the torpedo boat Climene.
	Abate, Pietro	4 Apr 1943	0830	Taranto	4 Apr 1943	1130	Taranto	20	Exercises.
	Abate, Pietro	6 Apr 1943	0645	Taranto	6 Apr 1943	1140	Taranto	29,4	Sonar trials with submarine chaser Malinska [with Admiral Federico Martinengo on board].
	Abate, Pietro	15 Apr 1943	0630	Taranto	15 Apr 1943	1200	Taranto	34	Exercises.
	Abate, Pietro	3 May 1943	0712	Taranto	3 May 1943	1410	Taranto	31	Exercises.
	Galletti, Raul	18 May 1943	1215	Taranto	18 May 1943	1755	Taranto	23	Exercises.
	Galletti, Raul	19 May 1943	1250	Taranto	19 May 1943	1822	Taranto	22	Exercises [with the auxiliary Claretta?]
	Galletti, Raul	20 May 1943	0740	Taranto	20 May 1943	1145	Taranto	24	Exercises.
	Rosso, Armando	21 May 1943	0740	Taranto	21 May 1943	1515	Taranto	32	Exercises.
25	Rosso, Armando	23 May 1943	1900	Taranto	30 May 1943	0010	Lampedusa	632	Supply mission to Lampedusa (foodstuff and ammunition). Uneventful.
25b	Rosso, Armando	30 May 1943	0445	Lampedusa	30 May 1943	2200	Lampedusa		Left Lampedusa to submerge, during daylight hours, outside the harbour and returned to complete the disembarkation of her cargo.
25c	Rosso, Armando	31 May 1943	0120	Lampedusa	4 Jun 1943	0330	Augusta	264	Return trip from supply mission to Lampedusa.
		1 Jun 1943	0030	34° 40'N, 14° 03'E	At 0030 hours, an aircraft dropped flares over the submarine. Atropo crash-dived.
26	Siriani, Emerico	6 Jun 1943	2000	Augusta	10 Jun 1943	0230	Lampedusa		Supply mission to Lampedusa. Uneventful.
26b	Siriani, Emerico	10 Jun 1943	0434	Lampedusa	10 Jun 1943	2117	Lampedusa		Left Lampedusa to submerge during daylight hours outside the harbour and returned to complete the disembarkation of her cargo.
26c	Siriani, Emerico	11 Jun 1943	0110	Lampedusa	16 Jun 1943	0820	Taranto	932	Return trip from supply mission to Lampedusa (mileage total).
		11 Jun 1943	2255	34° 40'N, 13° 39'E	At 2255 hours, an aircraft was seen and the submarine dived.
		11 Jun 1943	2320	34° 40'N, 13° 39'E	At 2320 hours, an aircraft was seen and the submarine dived.
		15 Jun 1943	2100B (e)	(e) 39° 09'N, 18° 50'E	The submarine was sighted by HMS Tactician (Lt.Cdr. A.F. Collett, DSC, RN) as she had just surfaced at 2040B/15. The British submarine refrained from attacking as the target was not identified positively and HMS Unbroken (Lt. B.J.B. Andrew, DSC, RN) was operating in the vicinity.
	Ferrari, Gino	28 Jun 1943	0835	Taranto	28 Jun 1943	1235	Taranto	34	Exercises.
	Ferrari, Gino	6 Jul 1943	0415	Taranto	6 Jul 1943	1326	Taranto	77,8	Exercises with the torpedo boats Pegaso and Partenope.
	Ferrari, Gino	12 Jul 1943	0510	Taranto	12 Jul 1943	1055	Taranto	40	Exercises with the torpedo boats Pallade and Partenope.
	Erler, Rino	14 Jul 1943	1515	Taranto	14 Jul 1943	1818	Taranto	32	Trials.
	Erler, Rino	17 Jul 1943	1000	Taranto	17 Jul 1943	1200	Taranto	1,5	Trials.
	Erler, Rino	21 Jul 1943	1100	Taranto	21 Jul 1943	1130	Taranto	1	Entered dock.
	Erler, Rino	23 Jul 1943	1220	Taranto	23 Jul 1943	1250	Taranto	1	Left dock.
	Erler, Rino	26 Jul 1943	0823	Taranto	26 Jul 1943	1215	Taranto	28	Trials.
	Erler, Rino	27 Jul 1943	0839	Taranto	27 Jul 1943	1055	Taranto	16,5	Laid a dummy minefield.
	Galzigna, Aredio	23 Aug 1943	0807	Taranto	23 Aug 1943	1235	Taranto	26	Exercises.
	Galzigna, Aredio	28 Aug 1943	1153	Taranto	28 Aug 1943	1957	Taranto	45	Exercises with the submarine Vortice and steam trawler Claretta.
	Galzigna, Aredio	29 Aug 1943	0539	Taranto	29 Aug 1943	1555	Taranto	59	Exercises with torpedo boats Aretusa and Clio.
	Galzigna, Aredio	31 Aug 1943	0805	Taranto	31 Aug 1943	1220	Taranto	20	Exercises with the steam trawler Claretta. The submarine had received an order to lay an experimental minefield (36 mines) but it is not clear if the order was executed.
		31 Aug 1943	0900+	40° 24'N, 17° 12'E	Atropo had orders to lay an experimental minefield with 36 mines of the P.1939 type. The position was starting from a point 186° - San Vito Light - 1,600 metres to 150° - San Vito Light - 4.600 metres. This was to be done submerged, at a speed of 4.5 knots for the first 10 mines and at 4 knots for the remainder. This would have been the first mines laid by Italian submarines since the negative experiences of October 1940. It is perhaps noteworthy to remark that the submarine was required to indicate her position by the regular discharge of air bubbles and that two motorboats and a launch with divers were to be put on standby by MARISUB Taranto in case of accident. It is not clear if the minefield was actually laid, but the submarine is known to have been at sea for exercises during this morning, escorted by steam trawler Claretta.
	Galzigna, Aredio	6 Sep 1943	1135	Taranto	6 Sep 1943	1922	Taranto	41	Exercises.
	Galzigna, Aredio	7 Sep 1943	0807	Taranto	7 Sep 1943	1737	Taranto	31	Exercises.
	Galzigna, Aredio	8 Sep 1943	0550	Taranto	8 Sep 1943	1730	Taranto	36	Exercises.
	Galzigna, Aredio	12 Sep 1943	0955	Taranto	13 Sep 1943	2035	Malta	342	Sailed with the submarines Jalea and Bandiera, escorted by the destroyers Riboty and HMS Troubridge for transfer from Taranto to Malta to surrender.
		13 Sep 1943	0020		At 0020 hours, the battleship Giulio Cesare and the seaplane tender Miraglia were sighted proceeding to Malta.
		13 Sep 1943	0300		At 0300 hours, a British convoy of six merchant vessels escorted by two destroyers and two major warships was sighted.
		13 Sep 1943	1320		At 1320 hours, the destroyer HMS Troubridge was encountered and led the submarines Atropo, Jalea and Bandiera, and the destroyer Riboty to Malta.
	Galzigna, Aredio	14 Sep 1943	1644	Malta	14 Sep 1943	1930	Malta	8	Changed anchorage.
	Galzigna, Aredio	1 Oct 1943	0830	Marsa Scirocco (Malta)	1 Oct 1943	1030	La Valette	2	Changed anchorage.
	Galzigna, Aredio	16 Oct 1943	0830	Malta	21 Oct 1943	0855	Haifa	1170	Passage Malta to Haifa with the submarines Menotti, Zoea and Corridoni.
27	Galzigna, Aredio	26 Oct 1943	2315	Haifa	30 Oct 1943	2100	Portolago (Leros)	806	Supply mission to Leros.
		27 Oct 1943	1330		At 1330 hours, a sailing vessel was sighted on a southerly course.
		28 Oct 1943	1015		At 1015 hours, a light cruiser of the AURORA class, two 'L' class destroyers and one 'G' class destroyer were sighted and exchanged recognition signals.
		28 Oct 1943	1055		At 1055 hours, two twin-engine aircraft were seen at a distance of 8,000 metres and the submarine dived.
27b	Galzigna, Aredio	31 Oct 1943	0330	Portolago (Leros)	3 Nov 1943	1900	Haifa	658	Return trip from supply mission to Leros. Uneventful.
28	Galzigna, Aredio	16 Nov 1943	0100	Haifa	19 Nov 1943	0705	Haifa	506,5	Storing trip Haifa-Leros through (1) 32°59'N, 34°34'E (2) 34°25'N, 27°10'E at 10 knots on surface and to dive north of Kaso Strait at dawn on the 18th, but recalled before reaching destination by S.1's 0903B hours on the 17th.
		18 Nov 1943	1425		At 1425 hours, three British destroyers of the HUNT class were sighted and exchanged recognition signals.
29	Galzigna, Aredio	22 Nov 1943	1010	Haifa	24 Nov 1943	0825	Castelrosso	438	Supply mission to Castelrosso. Uneventful.
29b	Galzigna, Aredio	25 Nov 1943	1720	Castelrosso	27 Nov 1943	0800	Haifa	382	Return trip from supply mission to Castellorizo. Took one passenger, an Italian soldier who had escaped from the Germans.
		26 Nov 1943	1327		At 1327 hours, two British destroyers of the HUNT class escorting three steamers were sighted.
	Galzigna, Aredio	28 Nov 1943	1800	Haifa	3 Dec 1943	1710	Taranto	1141,8	Passage Haifa-Taranto, she was to sail at 1600B hours on the 28th, on course 277° to (1) 34°15'N, 21°55'E at 1130B hours on 1st December (2) 35°44'N, 19°00'W at 0730 hours on the 2nd, 10 knots, course 341° and long refit until July 1944.
	Galzigna, Aredio	21 Jul 1944	0835	Taranto	21 Jul 1944	1715	Taranto	71,6	Trials.
	Galzigna, Aredio	24 Jul 1944	0815	Taranto	24 Jul 1944	1910	Taranto	97,5	Trials.
	Galzigna, Aredio	28 Jul 1944	0810	Taranto	28 Jul 1944	1810	Taranto	108,5	Trials.
	Galzigna, Aredio	1 Aug 1944	0925	Taranto	1 Aug 1944	1600	Taranto	5	Gyrocompass tests.
	Galzigna, Aredio	2 Aug 1944	0855	Taranto	2 Aug 1944	1716	Taranto	39,9	Exercises.
	Galzigna, Aredio	6 Aug 1944	0635	Taranto	6 Aug 1944	1745	Taranto	75	Trials.
	Galzigna, Aredio	23 Aug 1944	0810	Taranto	23 Aug 1944	1730	Taranto	51,4	Exercises.
	Galzigna, Aredio	29 Aug 1944	0615	Taranto	29 Aug 1944	1727	Taranto	36,2	Exercises. She was then deemed ready to join US ASW training in the Atlantic.
	Galzigna, Aredio	15 Sep 1944	1710	Taranto	17 Sep 1944	1435	Augusta	300	Passage Taranto-Augusta, escorted by the torpedo boats Fortunale and Ariete and the corvettes Danaide and Sfinge.
	Galzigna, Aredio	21 Sep 1944	1726	Augusta	27 Sep 1944	1432	Gibraltar	1142	Passage Augusta-Gibraltar.
	Galzigna, Aredio	7 Oct 1944	1053	Gibraltar	20 Oct 1944	1917	Port Royal (Bermuda)	3206	Passage Gibraltar-Port Royal (Bermuda), escorted by the destroyer escort USS Frederick C. Davis (DE-136) through (1) 35°49.3'N, 06°06.5'W at 1410/7 (2) 32°00'N, 14°00'E at 2320/9 (3) 31°00'N, 24°01'W at 1650/12 (4) 31°01'N, 40°01'W at 0110/14 (5) 31°00'N, 57°00'W at 1600/21, ETA 1830 hours on 23rd October, speed of advance: 8 knots. Apparently she was faster than expected as she arrived nearly three days early.
	Galzigna, Aredio	7 Nov 1944	1100	Port Royal (Bermuda)	7 Nov 1944	1840	Port St. George (Bermuda)	48	Passage Port Royal-Port St. George (Bermuda). She was reported to be in very good condition.
	Galzigna, Aredio	8 Nov 1944	0715	Port St. George (Bermuda)	8 Nov 1944	1616	Port St. George (Bermuda)	50	Exercises with American vessels.
	Galzigna, Aredio	9 Nov 1944	0706	Port St. George (Bermuda)	9 Nov 1944	1724	Port St. George (Bermuda)	67,5	Exercises with American vessels. Possibly with the group formed around the escort carrier USS Croatan.
	Galzigna, Aredio	10 Nov 1944	0719	Port St. George (Bermuda)	10 Nov 1944	1714	Port St. George (Bermuda)	57	Exercises with American vessels. Possibly with the group formed around the escort carrier USS Croatan.
	Galzigna, Aredio	11 Nov 1944	0710	Port St. George (Bermuda)	13 Nov 1944	0910	Port St. George (Bermuda)	295,3	Exercises ca. 32°09'N, 62°41'W with escort carrier USS Core (CVE-13), the destroyer escorts USS Moore (DE-240), USS Keith (DE-241), USS Tomich (DE-242), USS J. Richard Ward (DE-243), USS Otterstetter (DE-244), USS Sloat (DE-245) and the patrol vessel USS PCE-846.
	Galzigna, Aredio	14 Nov 1944	0722	Port St. George (Bermuda)	14 Nov 1944	1631	Port St. George (Bermuda)	43	Exercises with American vessels.
	Galzigna, Aredio	15 Nov 1944	0715	Port St. George (Bermuda)	15 Nov 1944	1615	Port St. George (Bermuda)	47,5	Exercises with the A/S group built around the escort carrier USS Core (CVE-13) group of TG 22.4.
	Galzigna, Aredio	17 Nov 1944	0630	Port St. George (Bermuda)	17 Nov 1944	1730	Port St. George (Bermuda)	84	Exercises with American vessels.
	Galzigna, Aredio	18 Nov 1944	0737	Port St. George (Bermuda)	18 Nov 1944	1608	Port St. George (Bermuda)	48,5	Exercises with American vessels. The same day C.F. Berengan (C.O. of Italian Squadron) paid an official visit to Rear Admiral Frank Alfred Braisted (Naval Operating Base Bermuda). Braisted had just succeeded to Sowell on 2nd November 1944.
	Galzigna, Aredio	20 Nov 1944	0720	Port St. George (Bermuda)	20 Nov 1944	1455	Port St. George (Bermuda)	50	Exercises with American vessels.
	Galzigna, Aredio	21 Nov 1944	0829	Port St. George (Bermuda)	21 Nov 1944	1711	Port St. George (Bermuda)	55	Exercises with the destroyers USS Carmick (DD-493), USS Doyle (DD-494) and USS Frankford (DD-497) of DESRON 17.
	Galzigna, Aredio	22 Nov 1944	0730	Port St. George (Bermuda)	22 Nov 1944	1608	Port St. George (Bermuda)	34,6	Exercises with American vessels. Possibly with the group built around the escort carrier USS Core (CVE-13).
	Galzigna, Aredio	26 Nov 1944	0745	Port St. George (Bermuda)	26 Nov 1944	1641	Port St. George (Bermuda)	43	Exercises with American vessels.
	Galzigna, Aredio	28 Nov 1944	0746	Port St. George (Bermuda)	28 Nov 1944	1540	Port St. George (Bermuda)	46,7	Exercises with American vessels.
	Galzigna, Aredio	30 Nov 1944	0715	Port St. George (Bermuda)	30 Nov 1944	1720	Port St. George (Bermuda)	70	Exercises with the fast minelayers USS Tolman (DM-28), USS J. William Ditter (DM-31) and the frigate USS Abilene (PF-58). Possibly also with the group built around the escort carrier USS Core (CVE-13).
	Galzigna, Aredio	2 Dec 1944	0745	Port St. George (Bermuda)	2 Dec 1944	1538	Port St. George (Bermuda)	43	Exercises with American vessels.
	Galzigna, Aredio	3 Dec 1944	0740	Port St. George (Bermuda)	3 Dec 1944	1730	Port St. George (Bermuda)	52	Exercises with American vessels.
	Galzigna, Aredio	4 Dec 1944	1358	Port St. George (Bermuda)	4 Dec 1944	1630	Port Royal (Bermuda)	25	Passage Port St. George-Port Royal (Bermuda).
	Galzigna, Aredio	6 Dec 1944	0715	Port Royal (Bermuda)	6 Dec 1944	0814	Malabar (Bermuda)	5	Passage Port Royal-Malabar (Bermuda) for docking.
	Galzigna, Aredio	10 Dec 1944	0715	Malabar (Bermuda)	10 Dec 1944	0814	Port St. George (Bermuda)	20	Passage Malabar-Port St. George (Bermuda). Exact date? Date listed in documents as 11th December but apparently in error?
	Galzigna, Aredio	11 Dec 1944	0710	Port St. George (Bermuda)	13 Dec 1944	0910	Port St. George (Bermuda)	305,3	Exercises with the patrol vessel USS PCE-846, escort-carrier USS Core (CVE-13) and her seven escorts.
	Galzigna, Aredio	14 Dec 1944	0735	Port St. George (Bermuda)	14 Dec 1944	1826	Port St. George (Bermuda)	85	Exercises with American vessels.
	Galzigna, Aredio	15 Dec 1944	0650	Port St. George (Bermuda)	15 Dec 1944	1610	Port St. George (Bermuda)	48	Exercises with American vessels.
	Galzigna, Aredio	17 Dec 1944	0745	Port St. George (Bermuda)	17 Dec 1944	1658	Port St. George (Bermuda)	56	Exercises with the destroyers USS Gainard (DD-706) and USS Alfred A. Cunningham (DD-752).
	Galzigna, Aredio	18 Dec 1944	0700	Port St. George (Bermuda)	18 Dec 1944	1608	Port St. George (Bermuda)	49	Exercises with American vessels.
	Galzigna, Aredio	20 Dec 1944	0750	Port St. George (Bermuda)	20 Dec 1944	1616	Port St. George (Bermuda)	52	Exercises with American vessels.
	Galzigna, Aredio	21 Dec 1944	1635	Port St. George (Bermuda)	22 Dec 1944	0534	Port St. George (Bermuda)	120	Exercises with American vessels.
	Galzigna, Aredio	23 Dec 1944	0820	Port St. George (Bermuda)	23 Dec 1944	1615	Port St. George (Bermuda)	38	Exercises with American vessels.
	Galzigna, Aredio	24 Dec 1944	0758	Port St. George (Bermuda)	24 Dec 1944	1633	Port St. George (Bermuda)	56	Exercises with the destroyer USS Compton (DD-705).
	Galzigna, Aredio	2 Jan 1945	0800	Port St. George (Bermuda)	5 Jan 1945	1327	Port St. George (Bermuda)	446,3	Exercises with American escort carrier USS Bogue (CVE-9), destroyer escorts USS Haverfield (DE-393), USS Willis (DE-395), USS Janssen (DE-396), USS Wilhoite (DE-397), USS Cockrill (DE-398) and the patrol vessel USS PCE-846.
	Galzigna, Aredio	9 Jan 1945	0754	Port St. George (Bermuda)	11 Jan 1945	1802	Port St. George (Bermuda)	330,6	Exercises with the escort-carrier USS Bogue (CVE-9), destroyer escorts USS Haverfield (DE-393), USS Willis (DE-395), USS Janssen (DE-396), USS Wilhoite (DE-397), USS Cockrill (DE-398) and the minesweeper USS Prime (AM-279).
	Galzigna, Aredio	13 Jan 1945	0807	Port St. George (Bermuda)	13 Jan 1945	1628	Port St. George (Bermuda)	49	Exercises with the destroyer escorts USS Cecil J. Doyle (DE-368).
	Galzigna, Aredio	15 Jan 1945	0703	Port St. George (Bermuda)	15 Jan 1945	1639	Port St. George (Bermuda)	50	Exercises with American vessels. Possibly exercising with the high speed transport USS Yokes (APD-69).
	Galzigna, Aredio	16 Jan 1945	0809	Port St. George (Bermuda)	16 Jan 1945	1612	Port St. George (Bermuda)	41	Exercises with American vessels.
	Galzigna, Aredio	18 Jan 1945	0745	Port St. George (Bermuda)	18 Jan 1945	1723	Port St. George (Bermuda)	70	Exercises with American vessels.
	Galzigna, Aredio	19 Jan 1945	0802	Port St. George (Bermuda)	19 Jan 1945	1651	Port St. George (Bermuda)	55,4	Exercises with American vessels. Possibly with the high speed transports USS Gosselin (APD-126).
	Galzigna, Aredio	20 Jan 1945	0815	Port St. George (Bermuda)	20 Jan 1945	1415	Port St. George (Bermuda)	40,3	Exercises with American vessels. Possibly with the group formed around the escort carrier USS Croatan.
	Galzigna, Aredio	27 Jan 1945	0806	Port St. George (Bermuda)	27 Jan 1945	1638	Port St. George (Bermuda)	47	Exercises with American vessels. Possibly the high speed transports USS Pavlic (APD-70) and USS Gosselin (APD-126).
	Galzigna, Aredio	28 Jan 1945	0830	Port St. George (Bermuda)	28 Jan 1945	1624	Port St. George (Bermuda)	41	Exercises with American vessels.
	Galzigna, Aredio	1 Feb 1945	0730	Port St. George (Bermuda)	1 Feb 1945	1643	Port St. George (Bermuda)	64,2	Exercises with American vessels.
	Galzigna, Aredio	2 Feb 1945	0703	Port St. George (Bermuda)	2 Feb 1945	1617	Port St. George (Bermuda)	53	Exercises with American vessels.
	Galzigna, Aredio	3 Feb 1945	0802	Port St. George (Bermuda)	3 Feb 1945	1618	Port St. George (Bermuda)	43	Exercises with American vessels.
	Galzigna, Aredio	4 Feb 1945	0802	Port St. George (Bermuda)	4 Feb 1945	1527	Port St. George (Bermuda)	35	Exercises with American vessels.
	Galzigna, Aredio	6 Feb 1945	0650	Port St. George (Bermuda)	6 Feb 1945	1518	Port St. George (Bermuda)	35	Exercises with American vessels.
	Galzigna, Aredio	13 Feb 1945	0747	Port St. George (Bermuda)	13 Feb 1945	1602	Port St. George (Bermuda)	40,5	Exercises with the destroyers USS Satterlee (DD-626) , USS Herndon (DD-638) and USS Tillman (DD-641).
	Galzigna, Aredio	14 Feb 1945	0747	Port St. George (Bermuda)	14 Feb 1945	1602	Port St. George (Bermuda)	39,5	Exercises with the destroyer escort USS Cross (DE-448) and the high speed transport USS Register (APD-92).
	Galzigna, Aredio	16 Feb 1945	0653	Port St. George (Bermuda)	16 Feb 1945	1625	Port St. George (Bermuda)	49,5	Exercises with the frigates USS Lorain (PF-93) and USS Racine (PF-100).
	Galzigna, Aredio	22 Feb 1945	0700	Port St. George (Bermuda)	22 Feb 1945	1617	Port St. George (Bermuda)	54,5	Exercises with American vessels of Killer Group of C.T.G. 23.1. Escorted out by the minesweeper USS Prime (AM-279).
	Galzigna, Aredio	24 Feb 1945	0743	Port St. George (Bermuda)	24 Feb 1945	1605	Port St. George (Bermuda)	34	Exercises with American vessels.
	Galzigna, Aredio	25 Feb 1945	0755	Port St. George (Bermuda)	25 Feb 1945	1623	Port St. George (Bermuda)	38	Exercises with American vessels.
	Galzigna, Aredio	26 Feb 1945	0650	Port St. George (Bermuda)	26 Feb 1945	1558	Port St. George (Bermuda)	38	Exercises with American vessels.
	Galzigna, Aredio	27 Feb 1945	0740	Port St. George (Bermuda)	27 Feb 1945	1657	Port St. George (Bermuda)	46	Exercises with American vessels.
	Galzigna, Aredio	3 Mar 1945	0652	Port St. George (Bermuda)	7 Mar 1945	0857	Guantanamo (Cuba)	979	Passage Port St. George (Bermuda)-Guantanamo (Cuba), escorted by the frigate USS Racine (PF-100). Racine attacked a doubtful contact (no U-boat appears to have operated in the vicinity) with ten depth charges at 0125 hours on 5th March [also reported as 0525Z hours] in 26°00'N, 69°36'W.
	Galzigna, Aredio	11 Mar 1945	0721	Guantanamo	11 Mar 1945	2005	Guantanamo	46,9	Exercises with American vessels. Possibly with the frigate USS Davenport (PF-69).
	Galzigna, Aredio	12 Mar 1945	0716	Guantanamo	12 Mar 1945	1630	Guantanamo	33,5	Exercises with American vessels. Possibly with the frigate USS Davenport (PF-69).
	Galzigna, Aredio	13 Mar 1945	0729	Guantanamo	13 Mar 1945	1520	Guantanamo	34	Exercises with American vessels.
	Galzigna, Aredio	15 Mar 1945	0722	Guantanamo	15 Mar 1945	1621	Guantanamo	35	Exercises with American vessels. Possibly the frigate USS Davenport (PF-69).
	Galzigna, Aredio	17 Mar 1945	0722	Guantanamo	17 Mar 1945	1530	Guantanamo	36,2	Exercises with American vessels.
	Galzigna, Aredio	18 Mar 1945	0723	Guantanamo	18 Mar 1945	1615	Guantanamo	42	Exercises with American vessels.
	Galzigna, Aredio	27 Mar 1945	0712	Guantanamo	27 Mar 1945	1511	Guantanamo	37	Exercises with American vessels. The high speed transport USS William J. Pattison (APD-104) exercised with an Italian submarine, possibly Atropo, Da Procida or Speri.
	Galzigna, Aredio	28 Mar 1945	0714	Guantanamo	28 Mar 1945	1703	Guantanamo	50	Exercises with the destroyer escort USS Marchand (DE-249).
	Galzigna, Aredio	29 Mar 1945	0711	Guantanamo	29 Mar 1945	1614	Guantanamo	33	Exercises with American vessels.
	Galzigna, Aredio	30 Mar 1945	0730	Guantanamo	30 Mar 1945	1426	Guantanamo	31	Exercises with American vessels.
	Galzigna, Aredio	31 Mar 1945	0714	Guantanamo	31 Mar 1945	1420	Guantanamo	27	Exercises with American vessels. The high speed transport USS William J. Pattison (APD-104) exercised with an Italian submarine, possibly Atropo, Da Procida or Speri.
	Galzigna, Aredio	1 Apr 1945	0718	Guantanamo	1 Apr 1945	1440	Guantanamo	34	Exercises with American vessels.
	Galzigna, Aredio	2 Apr 1945	0715	Guantanamo	2 Apr 1945	1350	Guantanamo	30	Exercises with American vessels.
	Galzigna, Aredio	3 Apr 1945	0713	Guantanamo	3 Apr 1945	1545	Guantanamo	35	Exercises with the destroyer USS Henry W. Tucker (DD-875).
	Galzigna, Aredio	4 Apr 1945	0715	Guantanamo	4 Apr 1945	1650	Guantanamo	33	Exercises with American vessels.
	Galzigna, Aredio	5 Apr 1945	0713	Guantanamo	5 Apr 1945	1625	Guantanamo	41	Exercises with American vessels.
	Galzigna, Aredio	8 Apr 1945	0722	Guantanamo	8 Apr 1945	1551	Guantanamo	33,5	Exercises with American vessels.
	Galzigna, Aredio	9 Apr 1945	0722	Guantanamo	9 Apr 1945	1625	Guantanamo	37	Exercises with American vessels.
	Galzigna, Aredio	11 Apr 1945	0724	Guantanamo	11 Apr 1945	1508	Guantanamo	38	Exercises with American vessels.
	Galzigna, Aredio	12 Apr 1945	0700	Guantanamo	12 Apr 1945	1530	Guantanamo	32	Exercises with American vessels.
	Galzigna, Aredio	28 Apr 1945	0950	Guantanamo	28 Apr 1945	1647	Guantanamo	26	Trials.
	Galzigna, Aredio	30 Apr 1945	0725	Guantanamo	30 Apr 1945	1512	Guantanamo	33	Exercises with American vessels.
	Galzigna, Aredio	2 May 1945	0715	Guantanamo	2 May 1945	1708	Guantanamo	44	Exercises with American vessels.
	Galzigna, Aredio	4 May 1945	0715	Guantanamo	4 May 1945	1517	Guantanamo	32	Exercises with American vessels.
	Galzigna, Aredio	5 May 1945	0720	Guantanamo	5 May 1945	1723	Guantanamo	48	Exercises with American vessels.
	Galzigna, Aredio	9 May 1945	0640	Guantanamo	9 May 1945	1719	Guantanamo	56	Exercises with American vessels.
	Galzigna, Aredio	10 May 1945	0635	Guantanamo	10 May 1945	1651	Guantanamo	67	Exercises with American vessels.
	Galzigna, Aredio	20 May 1945	0719	Guantanamo	20 May 1945	1349	Guantanamo	31	Exercises with American vessels.
	Galzigna, Aredio	21 May 1945	0625	Guantanamo	21 May 1945	1551	Guantanamo	48	Exercises with American vessels.
	Galzigna, Aredio	23 May 1945	0645	Guantanamo	23 May 1945	1432	Guantanamo	31	Exercises with American vessels.
	Galzigna, Aredio	24 May 1945	0647	Guantanamo	24 May 1945	1707	Guantanamo	64	Exercises with American vessels.
	Galzigna, Aredio	25 May 1945	0715	Guantanamo	25 May 1945	1401	Guantanamo	34	Exercises with American vessels.
	Galzigna, Aredio	27 May 1945	0933	Guantanamo	27 May 1945	1720	Guantanamo	36	Exercises with American vessels.
	Galzigna, Aredio	28 May 1945	0630	Guantanamo	28 May 1945	1522	Guantanamo	42	Exercises with American vessels.
	Galzigna, Aredio	29 May 1945	0630	Guantanamo	29 May 1945	1427	Guantanamo	35	Exercises with American vessels.
	Galzigna, Aredio	30 May 1945	0630	Guantanamo	30 May 1945	1523	Guantanamo	35	Exercises with American vessels.
	Galzigna, Aredio	31 May 1945	0630	Guantanamo	31 May 1945	1538	Guantanamo	30	Exercises with the destroyer USS Vogelgesang (DD-862) and the minesweeper USS Scoter (AM-381).
	Galzigna, Aredio	1 Jun 1945	0651	Guantanamo	1 Jun 1945	1521	Guantanamo	34	Exercises with the destroyer escorts USS Booth (DE-170), USS Carroll (DE-171) and USS Eldridge (DE-171).
	Galzigna, Aredio	4 Jun 1945	0630	Guantanamo	4 Jun 1945	1423	Guantanamo	40	Exercises with American vessels.
	Galzigna, Aredio	6 Jun 1945	0636	Guantanamo	6 Jun 1945	1537	Guantanamo	41,5	Exercises with American vessels. Possibly exercised with the destroyer escort USS Ramsden (DE-382).
	Galzigna, Aredio	10 Jun 1945	0631	Guantanamo	10 Jun 1945	1531	Guantanamo	38	Exercises with American vessels.
	Galzigna, Aredio	11 Jun 1945	0647	Guantanamo	11 Jun 1945	1554	Guantanamo	35	Exercises with the destroyer escorts USS Haveson (DE-316) and USS Joyce (DE-317).
	Galzigna, Aredio	12 Jun 1945	0828	Guantanamo	12 Jun 1945	1618	Guantanamo	33	Exercises with American vessels. The destroyer USS Dyess (DD-880) carried exercises with Atropo but no precise dates are given.
	Galzigna, Aredio	13 Jun 1945	0640	Guantanamo	13 Jun 1945	1731	Guantanamo	50	Exercises with American vessels.
	Galzigna, Aredio	22 Jun 1945	0854	Guantanamo	22 Jun 1945	1652	Guantanamo	31	Exercises with the destroyer USS Ericsson (DD-440).
	Galzigna, Aredio	23 Jun 1945	0629	Guantanamo	23 Jun 1945	1426	Guantanamo	31	Exercises with American vessels.
	Galzigna, Aredio	24 Jun 1945	1000	Guantanamo	24 Jun 1945	1735	Guantanamo	35	Exercises with the destroyer escorts USS Marchand (DE-249) and USS Hurst (DE-250). Possibly also exercised with USS Camp (DE-251).
	Galzigna, Aredio	25 Jun 1945	0829	Guantanamo	25 Jun 1945	1645	Guantanamo	31	Exercises with the destroyer USS Steinaker (DD-863).
	Galzigna, Aredio	26 Jun 1945	0704	Guantanamo	26 Jun 1945	1450	Guantanamo	34	Exercises with American vessels.
	Galzigna, Aredio	27 Jun 1945	0625	Guantanamo	27 Jun 1945	1511	Guantanamo	34	Exercises with the destroyer USS Bordelon (DD-881).
	Galzigna, Aredio	28 Jun 1945	0654	Guantanamo	28 Jun 1945	1424	Guantanamo	26	Exercises with American vessels.
	Galzigna, Aredio	29 Jun 1945	0639	Guantanamo	29 Jun 1945	1547	Guantanamo	29	Exercises with American vessels.
	Galzigna, Aredio	30 Jun 1945		Guantanamo	30 Jun 1945		Guantanamo		Exercises with the destroyer escorts USS Daniel (DE-335) and USS Dale W. Peterson (DE-337).
	Galzigna, Aredio	1 Jul 1945	0712	Guantanamo	1 Jul 1945	1530	Guantanamo	27	Exercises with American vessels.
	Galzigna, Aredio	2 Jul 1945	0920	Guantanamo	2 Jul 1945	1800	Guantanamo	29,5	Exercises with American vessels.
	Galzigna, Aredio	3 Jul 1945	0646	Guantanamo	3 Jul 1945	1502	Guantanamo	25	Exercises with American vessels.
	Galzigna, Aredio	4 Jul 1945	0650	Guantanamo	4 Jul 1945	1622	Guantanamo	46	Exercises with the destroyer escort USS Hill (DE-141).
	Galzigna, Aredio	5 Jul 1945	0854	Guantanamo	5 Jul 1945	1733	Guantanamo	31	Exercises with American vessels.
	Galzigna, Aredio	6 Jul 1945	0642	Guantanamo	6 Jul 1945	1450	Guantanamo	33,5	Exercises with American vessels.
	Galzigna, Aredio	9 Jul 1945	0640	Guantanamo	9 Jul 1945	1447	Guantanamo	25,5	Exercises with American vessels.
	Galzigna, Aredio	11 Jul 1945	0910	Guantanamo	11 Jul 1945	1658	Guantanamo	23,5	Exercises with American vessels.
	Galzigna, Aredio	13 Jul 1945	1105	Guantanamo	13 Jul 1945	1700	Guantanamo	18	Exercises with American vessels.
	Galzigna, Aredio	14 Jul 1945	1006	Guantanamo	14 Jul 1945	1740	Guantanamo	24	Exercises with the destroyer escorts USS Frost (DE-145) and USS Huse (DE-144).
	Galzigna, Aredio	16 Jul 1945	1224	Guantanamo	16 Jul 1945	1735	Guantanamo	21	Exercises with American vessels.
	Galzigna, Aredio	17 Jul 1945	0913	Guantanamo	17 Jul 1945	1408	Guantanamo	24	Exercises with the destroyer escort USS Lansing (DE-388).
	Galzigna, Aredio	20 Jul 1945	0642	Guantanamo	20 Jul 1945	1442	Guantanamo	25	Exercises with American vessels.
	Galzigna, Aredio	22 Jul 1945	1903	Guantanamo	22 Jul 1945	2359	Guantanamo	21,5	Exercises with the destroyer escorts USS Micka (DE-176), USS Straub (DE-181) and USS Gustafson (DE-182). A rare night exercise!
	Galzigna, Aredio	27 Jul 1945		Guantanamo	27 Jul 1945		Guantanamo		Exercises with the destroyer escorts USS Roy O. Hale (DE-336) and USS Martin H. Ray (DE-338).
	Galzigna, Aredio	3 Aug 1945	0642	Guantanamo	3 Aug 1945	0919	Guantanamo	13	Exercises with the destroyers USS Gyatt (DD-712) and USS Charles P. Cecil (DD-835), but Atropo had defects and had to turn back.
	Galzigna, Aredio	4 Aug 1945	0934	Guantanamo	4 Aug 1945	1659	Guantanamo	24	Exercises with American vessels.
	Galzigna, Aredio	5 Aug 1945	0638	Guantanamo	5 Aug 1945	1454	Guantanamo	24,5	Exercises with American vessels.
	Galzigna, Aredio	7 Aug 1945	0642	Guantanamo	7 Aug 1945	1430	Guantanamo	27	Exercises with American vessels.
	Galzigna, Aredio	8 Aug 1945	0645	Guantanamo	8 Aug 1945	1440	Guantanamo	26,5	Exercises with American vessels.
	Galzigna, Aredio	9 Aug 1945	0640	Guantanamo	9 Aug 1945	1421	Guantanamo	28	Exercises with American vessels.
	Galzigna, Aredio	10 Aug 1945	0638	Guantanamo	10 Aug 1945	1454	Guantanamo	25	Exercises with American vessels.
	Galzigna, Aredio	11 Aug 1945	0635	Guantanamo	11 Aug 1945	1452	Guantanamo	26	Exercises with American vessels.
	Galzigna, Aredio	17 Aug 1945	0617	Guantanamo	17 Aug 1945	1343	Guantanamo	29	Exercises with American vessels.
	Galzigna, Aredio	22 Aug 1945	0632	Guantanamo	22 Aug 1945	1523	Guantanamo	26	Exercises with American vessels.
	Galzigna, Aredio	21 Sep 1945	0754	Guantanamo	21 Sep 1945	1425	Guantanamo	19	Trials.
	Galzigna, Aredio	24 Sep 1945	1304	Guantanamo	30 Sep 1945	0837	Guantanamo	1024	Passage Guantanamo (Cuba)-Bermuda with submarines Dandolo and Speri, escorted by the patrol vessel USS PC-1192 [the war diaries of the US ATLANTIC FLEET indicate a departure of 23rd and arrival of 29th September].
	Galzigna, Aredio	5 Oct 1945	1350	Bermuda	16 Oct 1945	0823	San Miguel (Azores)	2059	Passage Bermuda-San Miguel (Azores) with Dandolo, Onice, Speri, Vortice, Da Procida, escorted by the salvage vessel USS Chain (ARS-20) [Bermuda station gives departure as 4th October].
	Galzigna, Aredio	21 Oct 1945	1219	San Miguel (Azores)	26 Oct 1945	0814	Gibraltar	977	Passage San Miguel (Azores)-Gibraltar.
	Galzigna, Aredio	28 Oct 1945	1330	Gibraltar	3 Nov 1945	1022	Taranto	1320	Passage Gibraltar-Taranto with Dandolo, Onice, Speri, Vortice, Marea, Da Procida, escorted by USS Chain (ARS-20). Met off Taranto by the torpedo boats Libra, Ariete and Cassiopea.

306 entries. 296 total patrol entries (29 marked as war patrols) and 36 events.

All Italian submarines

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