Serpente (ex-Nautilus) (SE)
Serpente

Type	Coastal / Sea going
Class	Argonauta (20)
Laid down	23 Apr 1930	Cantieri Navale Tosi di Taranto, Taranto
Launched	28 Feb 1932
Commissioned	12 Nov 1932
End service
Stricken
Loss date	12 Sep 1943
Loss position	43° 38'N, 13° 36'E
History	Scuttled off Ancona (approximately 43°38'N, 13°36'E), on 12th September 1943 to prevent her capture by the Germans.
Fate

Commands

Commander	Date from	Date to	Command notes
T.V. Vittorio Emanuele Tognelli	4 Jul 1939	28 Oct 1940
T.V. Antonio Dotta	28 Oct 1940	1 Feb 1941
T.V. Giuseppe Granero	2 Feb 1941	20 May 2041
S.T.V. Giandaniele Asquini	21 May 1941	17 Jun 1941
T.V. Renato Ferrini	18 Jun 1941	1 Dec 1941
T.V. Amedeo Stinchi	1 Dec 1941
T.V. Massimiliano Iasiello	11 Jan 1942	20 Feb 1942
C.C. Giovanni Lombardi	21 Feb 1942	28 Feb 1942
C.C. Loris Albanese	1 Mar 1942	31 Mar 1942
C.C. Guido D'Alterio	31 Mar 1942	17 May 1942
C.C. Giuseppe Roselli Lorenzini	18 May 1942	9 Jun 1942
C.C. Alberto Torri	10 Jun 1942	29 Aug 1942
C.C. Alberto Campanella	29 Aug 1942	29 Sep 1942
T.V. Marco Colotto	30 Sep 1942	30 Nov 1942
C.C. Antonio Dotta	1 Dec 1942	4 Mar 1943
T.V. Attilio Zenker	5 Mar 1943	13 Apr 1943
C.C. Ugo Gelli	14 Apr 1943	22 Jun 1943
C.C. Raffaello Allegri	23 Jun 1943	9 Sep 1943

Ships hit

No ships hit by this submarine.

Patrols and events

	Commander	Date	Time	Port	Arr. date	Arr. time	Arr. port	Miles	Description
	Tognelli, Vittorio Emanuele	12 May 1940		Taranto	29 Jun 1940		Taranto		Refit in Taranto.
	Tognelli, Vittorio Emanuele	29 Jun 1940	1020	Taranto	29 Jun 1940	1230	Taranto	0,5	Trials after refit.
	Tognelli, Vittorio Emanuele	29 Jun 1940	1400	Taranto	29 Jun 1940	1630	Taranto	3,6	Trials.
	Tognelli, Vittorio Emanuele	1 Jul 1940	0800	Taranto	1 Jul 1940	1400	Taranto	33	Trials.
	Tognelli, Vittorio Emanuele	2 Jul 1940	0800	Taranto	2 Jul 1940	1315	Taranto	17,5	Exercises.
	Tognelli, Vittorio Emanuele	5 Jul 1940	0700	Taranto	5 Jul 1940	1345	Taranto	39,5	Exercises.
	Tognelli, Vittorio Emanuele	7 Jul 1940	0720	Taranto	7 Jul 1940	1215	Taranto	1	Exercises.
	Tognelli, Vittorio Emanuele	8 Jul 1940	0700	Taranto	8 Jul 1940	1400	Taranto	41,6	Exercises.
	Tognelli, Vittorio Emanuele	15 Jul 1940	1000	Taranto	15 Jul 1940	1205	Taranto	1,8	Exercises.
1	Tognelli, Vittorio Emanuele	15 Jul 1940	2145	Taranto	16 Jul 1940	1030	Taranto	77,9	Antisubmarine patrol in 40°00'N, 17°20'E (hydrophone watch in Gulf of Taranto).
2	Tognelli, Vittorio Emanuele	17 Jul 1940	2145	Taranto	18 Jul 1940	1045	Taranto	77,9	Antisubmarine patrol in 40°00'N, 17°20'E (hydrophone watch in Gulf of Taranto).
3	Tognelli, Vittorio Emanuele	21 Jul 1940	1200	Taranto	22 Jul 1940	1045	Taranto	76,9	Antisubmarine patrol in 40°00'N, 17°20'E (hydrophone watch in Gulf of Taranto).
4	Tognelli, Vittorio Emanuele	22 Jul 1940	1955	Taranto	28 Jul 1940	1615	Taranto	829	Patrolled in Ionian Sea, between 32°10'N and 32°50'N, and between 24°30'E and 25°30'E, on a patrol line with Speri. Interrupted patrol because of defects.
	Tognelli, Vittorio Emanuele	6 Sep 1940	1455	Taranto	6 Sep 1940	1830	Taranto	28,9	Exercises.
	Tognelli, Vittorio Emanuele	8 Sep 1940	0700	Taranto	8 Sep 1940	1230	Taranto	34,9	Exercises.
	Tognelli, Vittorio Emanuele	9 Sep 1940	1330	Taranto	9 Sep 1940	1620	Taranto	24,4	Exercises.
	Tognelli, Vittorio Emanuele	10 Sep 1940	1325	Taranto	10 Sep 1940	1425	Taranto	1,2	Exercises?.
	Tognelli, Vittorio Emanuele	11 Sep 1940	0700	Taranto	11 Sep 1940	1130	Taranto	33,1	Trials.
5	Tognelli, Vittorio Emanuele	12 Sep 1940	2148	Taranto	13 Sep 1940	1130	Taranto	88,4	Antisubmarine patrol (hydrophone watch) in 40°00'N, 17°20'E.
6	Tognelli, Vittorio Emanuele	18 Sep 1940	1730	Taranto	5 Oct 1940	0835	Taranto	1809	Patrolled between southwest of Crete and Gaudo Island, between 34°15'N and 34°55'N, and between 23°25'E and 24°45'E.
		19 Sep 1940	2034	(0) 176° - Cape Santa Maria di Leuca - 59 miles.	At 2030 hours, a submarine was sighted at 2,000 metres, steering 170° at 1 or 2 knots. At 2034 hours, Serpente fired a single torpedo from a bow tube at a distance of 1,000 metres. The electric firing did not work immediately and the delay of 3 or 4 seconds was enough for the torpedo to miss the target by a few metres astern. At 2037 hours, a second torpedo was fired from a bow tube at 800 metres. Serpente reverted course and at 2040 hours, fired a third torpedo, this time from a stern tube. After 25-30 seconds a violent shock was felt. C.C. Tognelli was under the impression that the other submarine had dived just before it was hit and this would explain why no traces of survivors or debris were found. In fact, the "enemy" submarine was Marcantonio Colonna of the Messina Gruppo (Serpente belonged to the Taranto Gruppo). T.V. Gozzi of Colonna had observed the attack and, as his opponent was maneuvering for a stern shot, had immediately dived. A torpedo was heard passing just above her. Curiously, C.C. Vittorio Emanuele Tognelli and several officers and ratings' names were proposed for medals for this attack.
		1 Oct 1940	1705	(0) Near Gavdo island?	At 1705 hours, Serpente was proceeding at a depth of 47 metres, when hydrophone effects were heard. During the next hours, the submarine was hunted by three destroyers and heard 39 depth charges. She escaped by going down to 110 metres.
	Dotta, Antonio	5 Nov 1940	0835	Taranto	5 Nov 1940	1705	Taranto	35	Exercises.
	Dotta, Antonio	9 Nov 1940	0835	Taranto	9 Nov 1940	1710	Taranto	31	Exercises.
	Dotta, Antonio	11 Nov 1940	0805	Taranto	11 Nov 1940	1350	Taranto	21,2	Exercises.
	Dotta, Antonio	18 Nov 1940	0820	Taranto	18 Nov 1940	1540	Taranto	40	Exercises.
	Dotta, Antonio	19 Nov 1940	1010	Taranto	19 Nov 1940	1210	Taranto	1	Exercises.
	Dotta, Antonio	29 Nov 1940	0655	Taranto	29 Nov 1940	1530	Taranto	47	Exercises.
	Dotta, Antonio	30 Nov 1940	1155	Taranto	1 Dec 1940	1755	Augusta	301	Passage Taranto-Augusta.
7	Dotta, Antonio	18 Dec 1940	1445	Augusta	25 Dec 1940	1135	Augusta	674,4	Patrolled east of Malta from 35°30'N, 16°20'E on meridian to 10 miles south, on a patrol line with Dessié.
		20 Dec 1940	0102	35° 30'N, 16° 20'E	At 0100 hours, a large enemy formation was sighted at 4-5,000 metres in very rough seas (Grecale wind). It was estimated to be three cruisers and a destroyer. The range was closing. At 0102 hours, Serpente fired two torpedoes (533mm) from bow tubes at a distance of 2,500-3,000 metres, aimed at a cruiser and possibly a TRIBAL class destroyer. The submarine dived immediately after. She had reached a depth of 35 metres when a loud explosion was heard, indicating at least one hit and perhaps two. This was almost certainly HMS Calcutta, three sloops and one destroyer who were about 80 miles east of Malta at the time but did not observe any attack. It has sometimes been reported that the destroyer Hyperion was sunk in this attack, but this is an error: Hyperion was reported damaged by a mine at 0157 hours on 22nd December 1940 (24 miles east of Cape Bon or in 37°04' N, 11°30' E) and finally sunk at 0500 hours on the 22nd by HMS Janus.
		22 Dec 1940	0102	35° 30'N, 16° 20'E (0) Approximately.	At 0102 hours, two warships believed to be submarine chasers were sighted. Serpente dived and took evasive action, but apparently was undetected and surfaced three hours later.
	Dotta, Antonio	29 Dec 1940	0845	Augusta	29 Dec 1940	1050	Augusta	3,9	Exercises.
8	Dotta, Antonio	14 Jan 1941	1715	Augusta	28 Jan 1941	1030	Augusta	1419,7	Patrolled north of Cyrenaica, from 33°10'N, 22°10'E on course 108° for 205 miles then 060° for 40 miles then 35°40'N, 20°40'E. Encountered rough weather but uneventful, except for hearing distant explosions.
	Dotta, Antonio	29 Jan 1941	0945	Augusta	29 Jan 1941	1200	Augusta	3,4	Trials.
	Granero, Giuseppe	14 Feb 1941	1330	Augusta	14 Feb 1941	1650	Augusta	24,6	Trials.
9	Granero, Giuseppe	26 Feb 1941	1910	Augusta	12 Mar 1941	0900	Augusta	1122	Patrolled between 33°20'N and the coast of Cyrenaica, and between 21°40'E and 22°40'E. Uneventful, except for H.E.
	Granero, Giuseppe	29 Mar 1941	0925	Augusta	29 Mar 1941	1130	Augusta	13,4	Exercises.
	Granero, Giuseppe	1 Apr 1941	0735	Augusta	1 Apr 1941	1105	Augusta	25,9	Exercises, escorted by MS 516.
	Granero, Giuseppe	3 Apr 1941	0730	Augusta	3 Apr 1941	0900	Augusta	10,3	Exercises.
10	Granero, Giuseppe	9 Apr 1941	1935	Augusta	25 Apr 1941	0900	Augusta	1355	Patrolled 50 miles southwest of Cape Krio, between 34°40'N and 35°20'N, and between 23°00'E and 24°00'E.
		16 Apr 1941	2200	(0) South of Crete.	At 2200 hours, Serpente was informed of an enemy convoy proceeding to the southwest of Crete. The submarine altered course to intercept it near Cape Kutri. However, her search was believed to have failed because she cruised too far from the coast and her defective hydrophones did not help remedy the situation.
		18 Apr 1941	2200	(0) South of Crete.	At 2200 hours, Serpente was informed of a convoy proceeding south of Crete steering 300° to pass the southwest of the island. The submarine altered course to intercept it, but her hydrophones were not reliable and, although H.E. were heard, nothing was sighted.
	Granero, Giuseppe	28 Apr 1941	0835	Augusta	29 Apr 1941	1430	Naples	290	Passage Augusta-Naples.
	Asquini, Giandaniele	21 May 1941		Naples	17 Jun 1941		Naples		Refit in Naples.
	Ferrini, Renato	7 Jul 1941	1200	Naples	7 Jul 1941	2030	Naples	38,7	Exercises.
	Ferrini, Renato	12 Jul 1941	0900	Naples	12 Jul 1941	1730	Naples	24,2	Exercises.
	Ferrini, Renato	13 Jul 1941	0900	Naples	13 Jul 1941	1700	Naples	31,1	Exercises.
	Ferrini, Renato	15 Jul 1941	0750	Naples	15 Jul 1941	1255	Naples	27,9	Exercises.
	Ferrini, Renato	20 Jul 1941	0805	Naples	20 Jul 1941	1410	Naples	25	Exercises.
	Ferrini, Renato	22 Jul 1941	0810	Naples	22 Jul 1941	1730	Naples	30	Exercises.
	Ferrini, Renato	27 Jul 1941	0745	Naples	27 Jul 1941	1545	Naples	41	Exercises.
	Ferrini, Renato	28 Jul 1941	0720	Naples	28 Jul 1941	1920	Naples	88	Exercises.
	Ferrini, Renato	29 Jul 1941	1725	Naples	30 Jul 1941	0050	Naples	28	Exercises.
11	Ferrini, Renato	31 Jul 1941	1055	Naples	6 Aug 1941	0810	Naples	840,5	Patrolled west of La Galite, within 10 miles from 37°40'N, 08°30'E on the meridian. This was the first mission of T.V. Ferrini, fresh from Mariscuolasom (Submarine Training School).
		2 Aug 1941	0020	38° 00'N, 8° 55'E	At 0020 hours, an enemy submarine was sighted on an opposite course, at a distance of 2,000 metres. This was almost certainly HMS Talisman proceeding from Malta to Gibraltar. Serpente submerged but lost contact.
		3 Aug 1941	1335		At 1335 hours, Serpente was informed of a convoy of eight ships in 350° - Cape Blanc - 22 miles on course 270°, 10 knots and was ordered to intercept. Nothing was sighted.
	Ferrini, Renato	9 Aug 1941	1433	Naples	9 Aug 1941	1903	Naples		Exercises (not in Specchio).
	Ferrini, Renato	13 Aug 1941	0610	Naples	14 Aug 1941	1310	Cagliari	262	Passage Naples-Cagliari.
	Ferrini, Renato	17 Aug 1941	0735	Naples	17 Aug 1941	1145	Cagliari	1,38	Exercises?
12	Ferrini, Renato	22 Aug 1941	1625	Cagliari	27 Aug 1941	2130	Cagliari	582	Patrolled in western Mediterranean, on parallel 38°00'N between 05°00'E and 06°00'E, on a patrol line with Alagi.
		26 Aug 1941	0815	38° 02'N, 5° 45'E	At 0815 hours, an aircraft, probably a seaplane, was sighted 4-5,000 metres. It came toward Serpente who was at periscope depth and went deeper.
13	Ferrini, Renato	2 Sep 1941	2250	Cagliari	12 Sep 1941	1030	Cagliari	961	Sailed with Alagi for a patrol in 38°00'N, 06°00'E to westward, to intercept a force from Gibraltar. From 4th September, she patrolled between 00°00'E to 04°00'E, about 15-20 miles from the Algerian coast.
		5 Sep 1941	1355	(0) Off Cape Caxine.	At 1355 hours, a steamer was sighted at 15,000 metres steering 227°. Shortly after, a second steamer was sighted at 13,000 metres, steering 090°. Serpente lost contact with the first one, then closed the second ship at 1650 hours, at a distance of 1,000 meters. She was identified as the Vichy French Sainte Germaine (1,626 GRT, built 1919).
		5 Sep 1941	2003	(0) Off Cape Caxine.	At 2003 hours, a 5-6000-ton tanker was sighted steering a southerly course at 12-13 knots. At 2200 hours, Serpente had closed to 1,500 meters and identified her as French.
		8 Sep 1941	0740	(0) North of Cape Ténès.	At 0740 hours, a 700-800-ton steamer was sighted at 10-11,000, metres, steering 250° course. Serpente broke off the approach when the vessel was sighted in the process of entering Ténès harbour. Other vessels, all apparently French, were also sighted.
14	Ferrini, Renato	17 Sep 1941	0050	Cagliari	17 Sep 1941	2340	Cagliari	252	Sailed for patrol within 10 miles from 39°00'N, 04°30'E on the parallel, but then ordered back.
		17 Sep 1941	1240		At 1240 hours, the submarine Diaspro was sighted at 8-9,000 metres, steering on an opposite course. Serpente received the recall order only at 1315 hours.
	Ferrini, Renato	22 Sep 1941	0700	Cagliari	22 Sep 1941	1240	Cagliari	26,05	Exercises with the submarines Adua and Turchese escorted by the torpedo boat Abba and minesweeper Balear.
15	Ferrini, Renato	25 Sep 1941	1830	Cagliari	2 Oct 1941	1120	Cagliari	819	Sailed for patrol with submarines Axum, Aradam and Diaspro, between 39°30'N and 40°10'N, and between 06°00'E and 06°20'E. From 27th September, ordered to area between 37°50'N and 38°10'N, and between 06°00'E and 06°20'E.
		29 Sep 1941	1642 1645 (e)	37° 22'N, 6° 16'E (0) Italian Grid 6677/6.	At 1430 hours, Serpente was informed of the presence of an enemy naval force (this was the HALBERD convoy). Because of the heavy rain, the submarine dived to 30 meteres to get better acoustic conditions for her hydrophones. At 1540 hours, nothing could be heard and the submarine returned to periscope depth. At 1618 hours, the upper works of what appeared to be a battleship were seen at 10,000 metres. At 1640 hours, the formation identified as a battleship and four destroyers was attacked. Serpente fired two stern torpedoes at less than 1,000 metres at a JAVELIN class destroyer as the battleship was not in a good position for attack. At the same time, a destroyer was sighted at 1,300-1,500 metres suddenly turning toward the submarine who crash-dived. An explosion was heard after 40-50 seconds leading T.V. Ferrini to believe he had scored a hit. Serpente was depth charged between 1703-1722 hours. Her tormentor was the destroyer HMS Lively who dropped 14 depth charges at 1705 hours and was assisted by HMS Legion for the A/S hunt. The submarine had escaped by going down to 100 metres and stopping her machines. She surfaced at 1945 hours to find that the enemy was gone.
	Ferrini, Renato	14 Oct 1941	1220	Cagliari	14 Oct 1941	1440	Cagliari	16,4	Exercises.
	Ferrini, Renato	15 Oct 1941	1215	Cagliari	15 Oct 1941	1755	Cagliari	43	Exercises.
16	Ferrini, Renato	16 Oct 1941	2350	Cagliari	21 Oct 1941	1115	Cagliari	486	Sailed with the submarines Alagi, Aradam, Turchese and Diaspro for patrol north of Cape de Fer, between 37°30'N and 37°40'N, and between 06°40'E and 07°20'E.
		17 Oct 1941	1050	38° 02'N, 8° 00'E	At 1050 hours, an aircraft was sighted at 10-11,000 metres and the submarine dived.
		20 Oct 1941	1616 1519 (e)	37° 51'N, 6° 45'E	At 1616 hours, three destroyers were sighted at 10-11,000 metres. Serpente went deep. These were the light cruisers HMS Aurora and HMS Penelope and the destroyers HMS Lance and HMS Lively (Force K) proceeding to Malta. They had sighted the submarine at a distance of 12 miles.
	Ferrini, Renato	7 Nov 1941	0800	Cagliari	7 Nov 1941	1315	Cagliari	25	Exercises, escorted by the minesweeper Balear.
	Ferrini, Renato	11 Nov 1941	0805	Cagliari	11 Nov 1941	1215	Cagliari	20	Exercises, escorted by the minesweeper Balear.
17	Ferrini, Renato	11 Nov 1941	1945	Cagliari	16 Nov 1941	1900	Cagliari	652	Patrolled between 41°45'N and 42°00'N, 08°10'E and the Corsican coast. Sighted only an illuminated vessel.
	Ferrini, Renato	24 Nov 1941	0620	Cagliari	25 Nov 1941	1645	Naples	281	Passage Cagliari-Naples.
	Ferrini, Renato	28 Nov 1941	1020	Naples	28 Nov 1941	1505	Naples		Exercises.
	Stinchi, Amedeo	1 Dec 1941		Naples	1 Dec 1941		Naples		Refit in Naples.
	Iasiello, Massimiliano	12 Jan 1942	0845	Naples	12 Jan 1942	1300	Naples		Exercises.
	Iasiello, Massimiliano	13 Jan 1942	0705	Naples	13 Jan 1942	1715	Naples	34,7	Exercises.
	Iasiello, Massimiliano	4 Feb 1942	0653	Naples	4 Feb 1942	1710	Naples	59	Exercises.
	Iasiello, Massimiliano	17 Feb 1942	0900	Naples	17 Feb 1942	1330	Naples	21	Exercises.
	Iasiello, Massimiliano	19 Feb 1942	0900	Naples	19 Feb 1942	1420	Naples	21	Exercises.
	Lombardi, Giovanni	21 Feb 1942	0700	Naples	21 Feb 1942	1630	Naples	68,5	Exercises.
	Lombardi, Giovanni	24 Feb 1942	1055	Naples	26 Feb 1942	1610	Brindisi	520,1	Passage Naples-Brindisi. Sighted only Italian vessels.
		25 Feb 1942	1105	(0) Off S. Rainieri.	At 1105 hours, the submarine Topazio was sighted at 15,000 metres.
	Albanese, Loris	1 Mar 1942		Brindisi	31 Mar 1942		Brindisi		Available in Brindisi until 24th February 1942, then on reserve.
	D'Alterio, Guido	2 Apr 1942	1042	Brindisi	3 Apr 1942	2100	Pola	350	Passage Brindisi-Pola.
	D'Alterio, Guido	8 Apr 1942	0815	Pola	8 Apr 1942	1425	Pola	24	Exercises, escorted by Grado.
	D'Alterio, Guido	10 Apr 1942	1248	Pola	10 Apr 1942	1922	Pola	23,5	Exercises.
	D'Alterio, Guido	11 Apr 1942	0815	Pola	11 Apr 1942	1430	Pola	23,5	Exercises, escorted by Grado.
	D'Alterio, Guido	13 Apr 1942	0815	Pola	13 Apr 1942	1235	Pola	22,6	Exercises.
	D'Alterio, Guido	16 Apr 1942	0815	Pola	16 Apr 1942	1430	Pola	25,1	Exercises.
	D'Alterio, Guido	21 Apr 1942	1345	Pola	21 Apr 1942	1937	Pola	22	Exercises.
	D'Alterio, Guido	23 Apr 1942	0815	Pola	23 Apr 1942	1440	Pola	18	Exercises.
	D'Alterio, Guido	25 Apr 1942	1345	Pola	25 Apr 1942	1905	Pola	20	Exercises.
	D'Alterio, Guido	27 Apr 1942	1245	Pola	27 Apr 1942	1902	Pola	25	Exercises.
	D'Alterio, Guido	1 May 1942	0840	Pola	1 May 1942	1425	Pola		Exercises.
	D'Alterio, Guido	2 May 1942	0820	Pola	2 May 1942	1420	Pola	15	Exercises.
	D'Alterio, Guido	3 May 1942	0820	Pola	3 May 1942	1415	Pola	20	Exercises.
	D'Alterio, Guido	5 May 1942	1345	Pola	6 May 1942	0130	Pola	50	Exercises.
	D'Alterio, Guido	6 May 1942	1345	Pola	7 May 1942	0130	Pola	75	Exercises.
	D'Alterio, Guido	9 May 1942	0818	Pola	9 May 1942	1444	Pola	13	Exercises.
	D'Alterio, Guido	11 May 1942	1320	Pola	11 May 1942	1930	Pola	10	Exercises.
	D'Alterio, Guido	13 May 1942	0820	Pola	13 May 1942	1430	Pola	14	Exercises.
	D'Alterio, Guido	15 May 1942	1320	Pola	15 May 1942	1710	Pola	12	Exercises.
	Roselli Lorenzini, Giuseppe	18 May 1942	0601	Pola	18 May 1942	1115	Porto N. Sauro (Susak)	58	Passage Pola-Susak with the submarine Menotti, escorted by the torpedo boat Insidioso.
	Roselli Lorenzini, Giuseppe	19 May 1942	1315	Susak	20 May 1942	0210	Susak	70	Exercises with the submarine Bandiera, escorted by the auxiliary Jadera and the torpedo boat Insidioso.
	Roselli Lorenzini, Giuseppe	21 May 1942	1405	Susak	22 May 1942	0210	Susak	73	Sailed with the submarine Bandiera, escorted by the torpedo boat Insidioso for exercises. Was detached for sonar exercises in 45°17'N, 14°24'E with the destroyer Da Verazzano (equipped with German S-Gerät).
	Roselli Lorenzini, Giuseppe	23 May 1942	0805	Susak	23 May 1942	0835	Susak		Changed moorings.
	Roselli Lorenzini, Giuseppe	26 May 1942	0805	Susak	27 May 1942	0135	Susak	72	Exercises, escorted by the auxiliary Jadera.
	Roselli Lorenzini, Giuseppe	28 May 1942	0855	Susak	29 May 1942	0035	Susak	60	Exercises, escorted by the torpedo boat Insidioso.
	Roselli Lorenzini, Giuseppe	30 May 1942	0720	Susak	30 May 1942	1300	Susak	15	Exercises, escorted by the torpedo boat Insidioso.
	Roselli Lorenzini, Giuseppe	2 Jun 1942	1400	Susak	3 Jun 1942	0025	Susak	45,3	Exercises with the submarine Bandiera, escorted by the torpedo boat Insidioso.
	Roselli Lorenzini, Giuseppe	4 Jun 1942	0915	Susak	4 Jun 1942	1730	Susak	33	Exercises.
	Roselli Lorenzini, Giuseppe	6 Jun 1942	0915	Susak	6 Jun 1942	1700	Susak	35,5	Exercises with the submarines Bandiera and Ascianghi, escorted by the torpedo boat Insidioso.
	Roselli Lorenzini, Giuseppe	9 Jun 1942	0917	Susak	10 Jun 1942	0045	Susak	52	Exercises with the submarine Bandiera, escorted by the torpedo boat Insidioso.
	Torri, Alberto	12 Jun 1942	0858	Susak	13 Jun 1942	0141	Susak	43	Exercises with the submarine Bandiera, escorted by the torpedo boat Insidioso.
	Torri, Alberto	15 Jun 1942	0740	Susak	15 Jun 1942	2105	Susak	67,3	Exercises.
	Torri, Alberto	17 Jun 1942	0930	Susak	17 Jun 1942	1707	Susak	32	Exercises.
	Torri, Alberto	19 Jun 1942	1407	Susak	19 Jun 1942	1959	Susak	31	Exercises.
	Torri, Alberto	22 Jun 1942	2053	Susak	23 Jun 1942	0030	Susak	32,8	Exercises.
	Torri, Alberto	23 Jun 1942	1418	Susak	23 Jun 1942	2100	Susak	31,9	Exercises.
	Torri, Alberto	25 Jun 1942	1500	Susak	26 Jun 1942	0038	Susak	53,3	Exercises.
	Torri, Alberto	27 Jun 1942	0830	Susak	27 Jun 1942	1415	Susak	32,9	Exercises.
	Torri, Alberto	30 Jun 1942	1400	Susak	1 Jul 1942	0145	Susak	47,1	Exercises.
	Torri, Alberto	2 Jul 1942	1255	Susak	3 Jul 1942	0100	Susak	45,3	Exercises.
	Torri, Alberto	4 Jul 1942	0816	Susak	4 Jul 1942	1535	Susak	33,1	Exercises.
	Torri, Alberto	7 Jul 1942	1415	Susak	7 Jul 1942	2335	Susak	39,9	Exercises.
	Torri, Alberto	9 Jul 1942	1435	Susak	10 Jul 1942	0247	Susak	60,9	Exercises.
	Torri, Alberto	11 Jul 1942	1650	Susak	12 Jul 1942	0035	Susak	33,8	Exercises.
	Torri, Alberto	13 Jul 1942	1430	Susak	14 Jul 1942	0300	Susak	48,7	Exercises.
	Torri, Alberto	15 Jul 1942	1432	Susak	16 Jul 1942	0225	Susak	42,4	Exercises.
	Torri, Alberto	17 Jul 1942	1502	Susak	18 Jul 1942	0120	Susak	38,1	Exercises.
	Torri, Alberto	21 Jul 1942	1525	Susak	22 Jul 1942	0121	Susak	40,4	Exercises.
	Torri, Alberto	23 Jul 1942	0839	Susak	23 Jul 1942	1718	Susak	33,6	Exercises.
	Torri, Alberto	25 Jul 1942	0840	Susak	25 Jul 1942	1540	Susak	45,3	Exercises.
	Torri, Alberto	27 Jul 1942	1215	Susak	28 Jul 1942	0104	Susak	45,3	Exercises.
	Torri, Alberto	29 Jul 1942	1230	Susak	30 Jul 1942	0105	Susak	45,4	Exercises.
	Torri, Alberto	1 Aug 1942	0930	Susak	1 Aug 1942	1425	Susak	27,4	Exercises.
	Torri, Alberto	4 Aug 1942	0816	Susak	4 Aug 1942	1620	Susak	46,4	Exercises.
	Torri, Alberto	6 Aug 1942	1604	Susak	6 Aug 1942	1915	Susak	25,8	Exercises.
	Torri, Alberto	10 Aug 1942	1615	Susak	11 Aug 1942	0030	Susak	16,4	Exercises.
	Torri, Alberto	12 Aug 1942	1425	Susak	12 Aug 1942	2010	Susak	14,3	Exercises.
	Torri, Alberto	14 Aug 1942	0810	Susak	14 Aug 1942	1207	Susak	25,9	Exercises.
	Torri, Alberto	18 Aug 1942	0830	Susak	18 Aug 1942	1213	Susak	16	Exercises.
	Torri, Alberto	20 Aug 1942	1435	Susak	21 Aug 1942	0045	Susak	41	Exercises.
	Torri, Alberto	21 Aug 1942	1400	Susak	21 Aug 1942	1720	Susak	25	Exercises.
	Torri, Alberto	25 Aug 1942	1620	Susak	25 Aug 1942	2125	Susak	37	Exercises.
	Torri, Alberto	27 Aug 1942	0830	Susak	27 Aug 1942	1215	Susak	19	Exercises.
	Torri, Alberto	28 Aug 1942	0700	Susak	28 Aug 1942	0800	Susak	16,3	Exercises.
	Torri, Alberto	28 Aug 1942	0700	Susak	29 Aug 1942	0800	Susak	20,7	Exercises.
	Campanella, Alberto	30 Aug 1942	0700	Susak	30 Aug 1942	1330	Pola	58	Passage Susak-Pola, escorted by the auxiliary Jadera. Then long refit at Pola.
	Colotto, Marco	30 Sep 1942		Pola	30 Nov 1942		Pola		Long refit at Pola.
	Dotta, Antonio	12 Feb 1943	0920	Pola	12 Feb 1943	1120	Pola	2,5	Trials.
	Dotta, Antonio	15 Feb 1943	0825	Pola	15 Feb 1943	1515	Pola	32	Trials.
	Dotta, Antonio	24 Feb 1943	0905	Pola	24 Feb 1943	2300	Pola	41	Trials.
	Dotta, Antonio	3 Mar 1943	0030	Pola	3 Mar 1943	0925	Fiume	65	Passage Pola-Fiume with the torpedo boat Insidioso, escorted out by the torpedo boat T.3.
	Zenker, Attilio	5 Mar 1943		Fiume	13 Apr 1943		Fiume		Refit in Fiume.
	Gelli, Ugo	14 Apr 1943	1655	Fiume	14 Apr 1943	2045	Fiume	17	Trials.
	Gelli, Ugo	15 Apr 1943	1420	Fiume	15 Apr 1943	1700	Fiume	9	Sonar trials.
	Gelli, Ugo	16 Apr 1943	1010	Fiume	16 Apr 1943	1430	Fiume	16,5	Sonar trials.
	Gelli, Ugo	17 Apr 1943	0815	Fiume	17 Apr 1943	1200	Fiume	5	Gyrocompass tests.
	Gelli, Ugo	18 Apr 1943	0000	Fiume	18 Apr 1943	0530	Pola	59	Passage Fiume-Pola.
	Gelli, Ugo	23 Apr 1943	0900	Pola	23 Apr 1943	1305	Pola	16,5	Sonar trials.
	Gelli, Ugo	27 Apr 1943	0830	Pola	27 Apr 1943	1030	Pola	16	Gyrocompass tests.
	Gelli, Ugo	28 Apr 1943	0920	Pola	28 Apr 1943	1620	Pola	16	Torpedo trials.
	Gelli, Ugo	29 Apr 1943	0850	Pola	29 Apr 1943	1110	Pola	3	Torpedo trials.
	Gelli, Ugo	30 Apr 1943	0845	Pola	30 Apr 1943	1125	Pola	3	Torpedo trials.
	Gelli, Ugo	1 May 1943	0830	Pola	1 May 1943	1010	Pola	3	Gyrocompass tests.
	Gelli, Ugo	2 May 1943	0830	Pola	2 May 1943	1040	Pola	3	Gyrocompass tests.
	Gelli, Ugo	3 May 1943	0830	Pola	3 May 1943	1040	Pola	3	Gyrocompass tests.
	Gelli, Ugo	4 May 1943	0840	Pola	4 May 1943	1915	Pola	22	Exercises.
	Gelli, Ugo	7 May 1943	0845	Pola	7 May 1943	1100	Pola	24	Sonar exercises with the torpedo boat San Martino, the auxiliary Aurora and the tugs Parenzo and No.90.
	Gelli, Ugo	8 May 1943	0845	Pola	8 May 1943	1100	Pola	6	Gyrocompass tests.
	Gelli, Ugo	9 May 1943	0840	Pola	9 May 1943	1100	Pola	6	Gyrocompass tests.
	Gelli, Ugo	11 May 1943	0915	Pola	11 May 1943	1130	Pola	6	Demagnetization.
	Gelli, Ugo	12 May 1943	0615	Pola	12 May 1943	1045	Pola	22	Hydrophone tests.
	Gelli, Ugo	14 May 1943	0850	Pola	14 May 1943	1525	Pola	22	Gyrocompass tests.
	Gelli, Ugo	16 May 1943	0030	Pola	16 May 1943	0615	Fiume (Susak)	60	Passage Pola-Fiume.
	Gelli, Ugo	17 May 1943	0930	Susak	17 May 1943	1200	Susak	15	Exercises.
	Gelli, Ugo	18 May 1943	1215	Susak	19 May 1943	0215	Susak	60	Exercises.
	Gelli, Ugo	20 May 1943	1220	Susak	21 May 1943	0245	Susak	68	Exercises.
	Gelli, Ugo	22 May 1943	1500	Susak	22 May 1943	2200	Susak	44	Exercises.
	Gelli, Ugo	25 May 1943	1200	Susak	26 May 1943	0247	Susak	71	Exercises.
	Gelli, Ugo	27 May 1943	1230	Susak	28 May 1943	0045	Susak	59	Exercises.
	Gelli, Ugo	29 May 1943	1242	Susak	30 May 1943	0050	Susak	64	Exercises.
	Gelli, Ugo	1 Jun 1943	1340	Susak	2 Jun 1943	0145	Susak	51	Night torpedo attack exercises.
	Gelli, Ugo	3 Jun 1943	1115	Susak	3 Jun 1943	1700	Susak	27	Torpedo attack exercises.
	Gelli, Ugo	6 Jun 1943	1100	Susak	7 Jun 1943	0103	Susak	42	Night torpedo attack exercises.
	Gelli, Ugo	8 Jun 1943	1114	Susak	9 Jun 1943	0100	Susak	40	Night torpedo attack exercises.
	Gelli, Ugo	11 Jun 1943	1310	Susak	12 Jun 1943	0055	Fiume	39	Night simulated torpedo attack exercises.
	Gelli, Ugo	16 Jun 1943	1400	Fiume	16 Jun 1943	1935	Fiume	3	Entered dock.
	Gelli, Ugo	18 Jun 1943	1550	Fiume	18 Jun 1943	1635	Susak	3	Left dock.
	Gelli, Ugo	20 Jun 1943	0710	Susak	20 Jun 1943	1315	Susak	27	Sonar exercises.
	Gelli, Ugo	21 Jun 1943	0310	Susak	21 Jun 1943	0650	Susak	20	Sonar exercises.
	Allegri, Raffaello	24 Jun 1943	0618	Susak	24 Jun 1943	1050	Susak	26	Sonar exercises.
	Allegri, Raffaello	26 Jun 1943	0635	Fiume	26 Jun 1943	1540	Fiume	2	Sonar exercises.
	Allegri, Raffaello	26 Jun 1943	0605	Fiume	27 Jun 1943	0230	Fiume		Exercises.
	Allegri, Raffaello	29 Jun 1943	2155	Susak	30 Jun 1943	0430	Pola	60	Passage Susak-Pola.
	Allegri, Raffaello	1 Jul 1943	0800	Pola	1 Jul 1943	1210	Pola	10,5	Sonar exercises with a corvette.
	Allegri, Raffaello	1 Jul 1943	1345	Pola	1 Jul 1943	2020	Pola	28,5	Sonar exercises with a corvette.
	Allegri, Raffaello	10 Jul 1943	0800	Pola	10 Jul 1943	1115	Pola	8,5	Sonar exercises with a corvette.
	Allegri, Raffaello	10 Jul 1943	1350	Pola	10 Jul 1943	1800	Pola	10,5	Sonar exercises with a corvette.
	Allegri, Raffaello	13 Jul 1943	0800	Pola	13 Jul 1943	1300	Pola	33	Sonar exercises with a corvette.
	Allegri, Raffaello	13 Jul 1943	1348	Pola	13 Jul 1943	1815	Pola	33	Sonar exercises with a corvette.
	Allegri, Raffaello	15 Jul 1943	0730	Pola	15 Jul 1943	1250	Pola	31	Sonar exercises with a corvette.
	Allegri, Raffaello	16 Jul 1943	1640	Pola	16 Jul 1943	1940	Pola	20	Experimental Fantoni torpedo launch.
	Allegri, Raffaello	17 Jul 1943	0725	Pola	17 Jul 1943	1240	Pola	31,5	Sonar exercises with the torpedo boat San Martino, the auxiliary Aurora and the tugs Marittimo and No.90.
	Allegri, Raffaello	23 Jul 1943	1455	Pola	23 Jul 1943	1805	Pola	18	Experimental Fantoni torpedo launch.
	Allegri, Raffaello	1 Aug 1943	1630	Pola	1 Aug 1943	1855	Pola	32	Experimental Fantoni torpedo launch.
	Allegri, Raffaello	4 Aug 1943	0730	Pola	4 Aug 1943	1250	Pola	21	Exercises.
	Allegri, Raffaello	4 Aug 1943	1425	Pola	4 Aug 1943	1855	Pola	8	Sonar exercises with a corvette.
	Allegri, Raffaello	5 Aug 1943	0730	Pola	5 Aug 1943	1230	Pola	27	Exercises with a corvette.
	Allegri, Raffaello	5 Aug 1943	1615	Pola	5 Aug 1943	1830	Pola	14	Experimental Fantoni torpedo launch.
	Allegri, Raffaello	7 Aug 1943	0725	Pola	7 Aug 1943	1310	Pola	32	Sonar exercises with a corvette.
	Allegri, Raffaello	9 Aug 1943	1415	Pola	9 Aug 1943	1850	Pola	27	Exercises.
	Allegri, Raffaello	12 Aug 1943	0650	Pola	12 Aug 1943	1025	Pola	27	Sonar exercises with a corvette.
	Allegri, Raffaello	13 Aug 1943	0650	Pola	13 Aug 1943	1335	Pola	34	Sonar exercises with a corvette.
	Allegri, Raffaello	14 Aug 1943	0700	Pola	14 Aug 1943	1305	Pola	33	Sonar exercises with a corvette.
	Allegri, Raffaello	15 Aug 1943	0645	Pola	15 Aug 1943	1300	Pola	28	Sonar exercises with torpedo boat Clio.
	Allegri, Raffaello	16 Aug 1943	0800	Pola	16 Aug 1943	1250	Pola	21	Sonar exercises with torpedo boat Clio.
	Allegri, Raffaello	10 Sep 1943	1500	Pola	12 Sep 1943		Scuttled		Sailed for an allied port, but C.C. Allegri decided to scuttle her off Ancona (near Monte Conero). The crew was evacuated on board a fishing vessel. Some sources mention that she had been towing the midget C.B.12 but this is not confirmed.

217 entries. 210 total patrol entries (17 marked as war patrols) and 17 events.

All Italian submarines

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