Italian submarines in World War Two

Serpente (ex-Nautilus) (SE)

TypeCoastal / Sea going 
ClassArgonauta (20) 
Laid down 23 Apr 1930 Cantieri Navale Tosi di Taranto, Taranto
Launched28 Feb 1932
Commissioned12 Nov 1932
End service
Loss date12 Sep 1943
Loss position43° 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.


CommanderDate fromDate toCommand notes
T.V. Vittorio Emanuele Tognelli4 Jul 193928 Oct 1940
T.V. Antonio Dotta28 Oct 19401 Feb 1941
T.V. Giuseppe Granero2 Feb 194120 May 2041
S.T.V. Giandaniele Asquini21 May 194117 Jun 1941
T.V. Renato Ferrini18 Jun 19411 Dec 1941
T.V. Amedeo Stinchi1 Dec 1941
T.V. Massimiliano Iasiello11 Jan 194220 Feb 1942
C.C. Giovanni Lombardi21 Feb 194228 Feb 1942
C.C. Loris Albanese1 Mar 194231 Mar 1942
C.C. Guido D'Alterio31 Mar 194217 May 1942
C.C. Giuseppe Roselli Lorenzini18 May 19429 Jun 1942
C.C. Alberto Torri10 Jun 194229 Aug 1942
C.C. Alberto Campanella29 Aug 194229 Sep 1942
T.V. Marco Colotto30 Sep 194230 Nov 1942
C.C. Antonio Dotta1 Dec 19424 Mar 1943
T.V. Attilio Zenker5 Mar 194313 Apr 1943
C.C. Ugo Gelli14 Apr 194322 Jun 1943
C.C. Raffaello Allegri23 Jun 19439 Sep 1943

Ships hit

No ships hit by this submarine.

Patrols and events

 CommanderDateTimePortArr. dateArr. timeArr. portMilesDescription
Tognelli, Vittorio Emanuele12 May 1940Taranto29 Jun 1940TarantoRefit in Taranto.

Tognelli, Vittorio Emanuele29 Jun 19401020Taranto29 Jun 19401230Taranto0,5Trials after refit.

Tognelli, Vittorio Emanuele29 Jun 19401400Taranto29 Jun 19401630Taranto3,6Trials.

Tognelli, Vittorio Emanuele1 Jul 19400800Taranto1 Jul 19401400Taranto33Trials.

Tognelli, Vittorio Emanuele2 Jul 19400800Taranto2 Jul 19401315Taranto17,5Exercises.

Tognelli, Vittorio Emanuele5 Jul 19400700Taranto5 Jul 19401345Taranto39,5Exercises.

Tognelli, Vittorio Emanuele7 Jul 19400720Taranto7 Jul 19401215Taranto1Exercises.

Tognelli, Vittorio Emanuele8 Jul 19400700Taranto8 Jul 19401400Taranto41,6Exercises.

Tognelli, Vittorio Emanuele15 Jul 19401000Taranto15 Jul 19401205Taranto1,8Exercises.

1Tognelli, Vittorio Emanuele15 Jul 19402145Taranto16 Jul 19401030Taranto77,9Antisubmarine patrol in 40°00'N, 17°20'E (hydrophone watch in Gulf of Taranto).

2Tognelli, Vittorio Emanuele17 Jul 19402145Taranto18 Jul 19401045Taranto77,9Antisubmarine patrol in 40°00'N, 17°20'E (hydrophone watch in Gulf of Taranto).

3Tognelli, Vittorio Emanuele21 Jul 19401200Taranto22 Jul 19401045Taranto76,9Antisubmarine patrol in 40°00'N, 17°20'E (hydrophone watch in Gulf of Taranto).

4Tognelli, Vittorio Emanuele22 Jul 19401955Taranto28 Jul 19401615Taranto829Patrolled 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 Emanuele6 Sep 19401455Taranto6 Sep 19401830Taranto28,9Exercises.

Tognelli, Vittorio Emanuele8 Sep 19400700Taranto8 Sep 19401230Taranto34,9Exercises.

Tognelli, Vittorio Emanuele9 Sep 19401330Taranto9 Sep 19401620Taranto24,4Exercises.

Tognelli, Vittorio Emanuele10 Sep 19401325Taranto10 Sep 19401425Taranto1,2Exercises?.

Tognelli, Vittorio Emanuele11 Sep 19400700Taranto11 Sep 19401130Taranto33,1Trials.

5Tognelli, Vittorio Emanuele12 Sep 19402148Taranto13 Sep 19401130Taranto88,4Antisubmarine patrol (hydrophone watch) in 40°00'N, 17°20'E.

6Tognelli, Vittorio Emanuele18 Sep 19401730Taranto5 Oct 19400835Taranto1809Patrolled 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 19402034
(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 19401705
(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, Antonio5 Nov 19400835Taranto5 Nov 19401705Taranto35Exercises.

Dotta, Antonio9 Nov 19400835Taranto9 Nov 19401710Taranto31Exercises.

Dotta, Antonio11 Nov 19400805Taranto11 Nov 19401350Taranto21,2Exercises.

Dotta, Antonio18 Nov 19400820Taranto18 Nov 19401540Taranto40Exercises.

Dotta, Antonio19 Nov 19401010Taranto19 Nov 19401210Taranto1Exercises.

Dotta, Antonio29 Nov 19400655Taranto29 Nov 19401530Taranto47Exercises.

Dotta, Antonio30 Nov 19401155Taranto1 Dec 19401755Augusta301Passage Taranto-Augusta.

7Dotta, Antonio18 Dec 19401445Augusta25 Dec 19401135Augusta674,4Patrolled east of Malta from 35°30'N, 16°20'E on meridian to 10 miles south, on a patrol line with Dessié.
  20 Dec 1940010235° 30'N, 16° 20'EAt 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 1940010235° 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, Antonio29 Dec 19400845Augusta29 Dec 19401050Augusta3,9Exercises.

8Dotta, Antonio14 Jan 19411715Augusta28 Jan 19411030Augusta1419,7Patrolled 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, Antonio29 Jan 19410945Augusta29 Jan 19411200Augusta3,4Trials.

Granero, Giuseppe14 Feb 19411330Augusta14 Feb 19411650Augusta24,6Trials.

9Granero, Giuseppe26 Feb 19411910Augusta12 Mar 19410900Augusta1122Patrolled between 33°20'N and the coast of Cyrenaica, and between 21°40'E and 22°40'E. Uneventful, except for H.E.

Granero, Giuseppe29 Mar 19410925Augusta29 Mar 19411130Augusta13,4Exercises.

Granero, Giuseppe1 Apr 19410735Augusta1 Apr 19411105Augusta25,9Exercises, escorted by MS 516.

Granero, Giuseppe3 Apr 19410730Augusta3 Apr 19410900Augusta10,3Exercises.

10Granero, Giuseppe9 Apr 19411935Augusta25 Apr 19410900Augusta1355Patrolled 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 19412200
(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 19412200
(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, Giuseppe28 Apr 19410835Augusta29 Apr 19411430Naples290Passage Augusta-Naples.

Asquini, Giandaniele21 May 1941Naples17 Jun 1941NaplesRefit in Naples.

Ferrini, Renato7 Jul 19411200Naples7 Jul 19412030Naples38,7Exercises.

Ferrini, Renato12 Jul 19410900Naples12 Jul 19411730Naples24,2Exercises.

Ferrini, Renato13 Jul 19410900Naples13 Jul 19411700Naples31,1Exercises.

Ferrini, Renato15 Jul 19410750Naples15 Jul 19411255Naples27,9Exercises.

Ferrini, Renato20 Jul 19410805Naples20 Jul 19411410Naples25Exercises.

Ferrini, Renato22 Jul 19410810Naples22 Jul 19411730Naples30Exercises.

Ferrini, Renato27 Jul 19410745Naples27 Jul 19411545Naples41Exercises.

Ferrini, Renato28 Jul 19410720Naples28 Jul 19411920Naples88Exercises.

Ferrini, Renato29 Jul 19411725Naples30 Jul 19410050Naples28Exercises.

11Ferrini, Renato31 Jul 19411055Naples6 Aug 19410810Naples840,5Patrolled 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 1941002038° 00'N, 8° 55'EAt 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 19411335At 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, Renato9 Aug 19411433Naples9 Aug 19411903NaplesExercises (not in Specchio).

Ferrini, Renato13 Aug 19410610Naples14 Aug 19411310Cagliari262Passage Naples-Cagliari.

Ferrini, Renato17 Aug 19410735Naples17 Aug 19411145Cagliari1,38Exercises?

12Ferrini, Renato22 Aug 19411625Cagliari27 Aug 19412130Cagliari582Patrolled in western Mediterranean, on parallel 38°00'N between 05°00'E and 06°00'E, on a patrol line with Alagi.
  26 Aug 1941081538° 02'N, 5° 45'EAt 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.

13Ferrini, Renato2 Sep 19412250Cagliari12 Sep 19411030Cagliari961Sailed 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 19411355
(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 19412003
(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 19410740
(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.

14Ferrini, Renato17 Sep 19410050Cagliari17 Sep 19412340Cagliari252Sailed for patrol within 10 miles from 39°00'N, 04°30'E on the parallel, but then ordered back.
  17 Sep 19411240At 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, Renato22 Sep 19410700Cagliari22 Sep 19411240Cagliari26,05Exercises with the submarines Adua and Turchese escorted by the torpedo boat Abba and minesweeper Balear.

15Ferrini, Renato25 Sep 19411830Cagliari2 Oct 19411120Cagliari819Sailed 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 19411642
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, Renato14 Oct 19411220Cagliari14 Oct 19411440Cagliari16,4Exercises.

Ferrini, Renato15 Oct 19411215Cagliari15 Oct 19411755Cagliari43Exercises.

16Ferrini, Renato16 Oct 19412350Cagliari21 Oct 19411115Cagliari486Sailed 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 1941105038° 02'N, 8° 00'EAt 1050 hours, an aircraft was sighted at 10-11,000 metres and the submarine dived.
  20 Oct 19411616
1519 (e)
37° 51'N, 6° 45'EAt 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, Renato7 Nov 19410800Cagliari7 Nov 19411315Cagliari25Exercises, escorted by the minesweeper Balear.

Ferrini, Renato11 Nov 19410805Cagliari11 Nov 19411215Cagliari20Exercises, escorted by the minesweeper Balear.

17Ferrini, Renato11 Nov 19411945Cagliari16 Nov 19411900Cagliari652Patrolled between 41°45'N and 42°00'N, 08°10'E and the Corsican coast. Sighted only an illuminated vessel.

Ferrini, Renato24 Nov 19410620Cagliari25 Nov 19411645Naples281Passage Cagliari-Naples.

Ferrini, Renato28 Nov 19411020Naples28 Nov 19411505NaplesExercises.

Stinchi, Amedeo1 Dec 1941Naples1 Dec 1941NaplesRefit in Naples.

Iasiello, Massimiliano12 Jan 19420845Naples12 Jan 19421300NaplesExercises.

Iasiello, Massimiliano13 Jan 19420705Naples13 Jan 19421715Naples34,7Exercises.

Iasiello, Massimiliano4 Feb 19420653Naples4 Feb 19421710Naples59Exercises.

Iasiello, Massimiliano17 Feb 19420900Naples17 Feb 19421330Naples21Exercises.

Iasiello, Massimiliano19 Feb 19420900Naples19 Feb 19421420Naples21Exercises.

Lombardi, Giovanni21 Feb 19420700Naples21 Feb 19421630Naples68,5Exercises.

Lombardi, Giovanni24 Feb 19421055Naples26 Feb 19421610Brindisi520,1Passage Naples-Brindisi. Sighted only Italian vessels.
  25 Feb 19421105
(0) Off S. Rainieri.
At 1105 hours, the submarine Topazio was sighted at 15,000 metres.

Albanese, Loris1 Mar 1942Brindisi31 Mar 1942BrindisiAvailable in Brindisi until 24th February 1942, then on reserve.

D'Alterio, Guido2 Apr 19421042Brindisi3 Apr 19422100Pola350Passage Brindisi-Pola.

D'Alterio, Guido8 Apr 19420815Pola8 Apr 19421425Pola24Exercises, escorted by Grado.

D'Alterio, Guido10 Apr 19421248Pola10 Apr 19421922Pola23,5Exercises.

D'Alterio, Guido11 Apr 19420815Pola11 Apr 19421430Pola23,5Exercises, escorted by Grado.

D'Alterio, Guido13 Apr 19420815Pola13 Apr 19421235Pola22,6Exercises.

D'Alterio, Guido16 Apr 19420815Pola16 Apr 19421430Pola25,1Exercises.

D'Alterio, Guido21 Apr 19421345Pola21 Apr 19421937Pola22Exercises.

D'Alterio, Guido23 Apr 19420815Pola23 Apr 19421440Pola18Exercises.

D'Alterio, Guido25 Apr 19421345Pola25 Apr 19421905Pola20Exercises.

D'Alterio, Guido27 Apr 19421245Pola27 Apr 19421902Pola25Exercises.

D'Alterio, Guido1 May 19420840Pola1 May 19421425PolaExercises.

D'Alterio, Guido2 May 19420820Pola2 May 19421420Pola15Exercises.

D'Alterio, Guido3 May 19420820Pola3 May 19421415Pola20Exercises.

D'Alterio, Guido5 May 19421345Pola6 May 19420130Pola50Exercises.

D'Alterio, Guido6 May 19421345Pola7 May 19420130Pola75Exercises.

D'Alterio, Guido9 May 19420818Pola9 May 19421444Pola13Exercises.

D'Alterio, Guido11 May 19421320Pola11 May 19421930Pola10Exercises.

D'Alterio, Guido13 May 19420820Pola13 May 19421430Pola14Exercises.

D'Alterio, Guido15 May 19421320Pola15 May 19421710Pola12Exercises.

Roselli Lorenzini, Giuseppe18 May 19420601Pola18 May 19421115Porto N. Sauro (Susak)58Passage Pola-Susak with the submarine Menotti, escorted by the torpedo boat Insidioso.

Roselli Lorenzini, Giuseppe19 May 19421315Susak20 May 19420210Susak70Exercises with the submarine Bandiera, escorted by the auxiliary Jadera and the torpedo boat Insidioso.

Roselli Lorenzini, Giuseppe21 May 19421405Susak22 May 19420210Susak73Sailed 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, Giuseppe23 May 19420805Susak23 May 19420835SusakChanged moorings.

Roselli Lorenzini, Giuseppe26 May 19420805Susak27 May 19420135Susak72Exercises, escorted by the auxiliary Jadera.

Roselli Lorenzini, Giuseppe28 May 19420855Susak29 May 19420035Susak60Exercises, escorted by the torpedo boat Insidioso.

Roselli Lorenzini, Giuseppe30 May 19420720Susak30 May 19421300Susak15Exercises, escorted by the torpedo boat Insidioso.

Roselli Lorenzini, Giuseppe2 Jun 19421400Susak3 Jun 19420025Susak45,3Exercises with the submarine Bandiera, escorted by the torpedo boat Insidioso.

Roselli Lorenzini, Giuseppe4 Jun 19420915Susak4 Jun 19421730Susak33Exercises.

Roselli Lorenzini, Giuseppe6 Jun 19420915Susak6 Jun 19421700Susak35,5Exercises with the submarines Bandiera and Ascianghi, escorted by the torpedo boat Insidioso.

Roselli Lorenzini, Giuseppe9 Jun 19420917Susak10 Jun 19420045Susak52Exercises with the submarine Bandiera, escorted by the torpedo boat Insidioso.

Torri, Alberto12 Jun 19420858Susak13 Jun 19420141Susak43Exercises with the submarine Bandiera, escorted by the torpedo boat Insidioso.

Torri, Alberto15 Jun 19420740Susak15 Jun 19422105Susak67,3Exercises.

Torri, Alberto17 Jun 19420930Susak17 Jun 19421707Susak32Exercises.

Torri, Alberto19 Jun 19421407Susak19 Jun 19421959Susak31Exercises.

Torri, Alberto22 Jun 19422053Susak23 Jun 19420030Susak32,8Exercises.

Torri, Alberto23 Jun 19421418Susak23 Jun 19422100Susak31,9Exercises.

Torri, Alberto25 Jun 19421500Susak26 Jun 19420038Susak53,3Exercises.

Torri, Alberto27 Jun 19420830Susak27 Jun 19421415Susak32,9Exercises.

Torri, Alberto30 Jun 19421400Susak1 Jul 19420145Susak47,1Exercises.

Torri, Alberto2 Jul 19421255Susak3 Jul 19420100Susak45,3Exercises.

Torri, Alberto4 Jul 19420816Susak4 Jul 19421535Susak33,1Exercises.

Torri, Alberto7 Jul 19421415Susak7 Jul 19422335Susak39,9Exercises.

Torri, Alberto9 Jul 19421435Susak10 Jul 19420247Susak60,9Exercises.

Torri, Alberto11 Jul 19421650Susak12 Jul 19420035Susak33,8Exercises.

Torri, Alberto13 Jul 19421430Susak14 Jul 19420300Susak48,7Exercises.

Torri, Alberto15 Jul 19421432Susak16 Jul 19420225Susak42,4Exercises.

Torri, Alberto17 Jul 19421502Susak18 Jul 19420120Susak38,1Exercises.

Torri, Alberto21 Jul 19421525Susak22 Jul 19420121Susak40,4Exercises.

Torri, Alberto23 Jul 19420839Susak23 Jul 19421718Susak33,6Exercises.

Torri, Alberto25 Jul 19420840Susak25 Jul 19421540Susak45,3Exercises.

Torri, Alberto27 Jul 19421215Susak28 Jul 19420104Susak45,3Exercises.

Torri, Alberto29 Jul 19421230Susak30 Jul 19420105Susak45,4Exercises.

Torri, Alberto1 Aug 19420930Susak1 Aug 19421425Susak27,4Exercises.

Torri, Alberto4 Aug 19420816Susak4 Aug 19421620Susak46,4Exercises.

Torri, Alberto6 Aug 19421604Susak6 Aug 19421915Susak25,8Exercises.

Torri, Alberto10 Aug 19421615Susak11 Aug 19420030Susak16,4Exercises.

Torri, Alberto12 Aug 19421425Susak12 Aug 19422010Susak14,3Exercises.

Torri, Alberto14 Aug 19420810Susak14 Aug 19421207Susak25,9Exercises.

Torri, Alberto18 Aug 19420830Susak18 Aug 19421213Susak16Exercises.

Torri, Alberto20 Aug 19421435Susak21 Aug 19420045Susak41Exercises.

Torri, Alberto21 Aug 19421400Susak21 Aug 19421720Susak25Exercises.

Torri, Alberto25 Aug 19421620Susak25 Aug 19422125Susak37Exercises.

Torri, Alberto27 Aug 19420830Susak27 Aug 19421215Susak19Exercises.

Torri, Alberto28 Aug 19420700Susak28 Aug 19420800Susak16,3Exercises.

Torri, Alberto28 Aug 19420700Susak29 Aug 19420800Susak20,7Exercises.

Campanella, Alberto30 Aug 19420700Susak30 Aug 19421330Pola58Passage Susak-Pola, escorted by the auxiliary Jadera. Then long refit at Pola.

Colotto, Marco30 Sep 1942Pola30 Nov 1942PolaLong refit at Pola.

Dotta, Antonio12 Feb 19430920Pola12 Feb 19431120Pola2,5Trials.

Dotta, Antonio15 Feb 19430825Pola15 Feb 19431515Pola32Trials.

Dotta, Antonio24 Feb 19430905Pola24 Feb 19432300Pola41Trials.

Dotta, Antonio3 Mar 19430030Pola3 Mar 19430925Fiume65Passage Pola-Fiume with the torpedo boat Insidioso, escorted out by the torpedo boat T.3.

Zenker, Attilio5 Mar 1943Fiume13 Apr 1943FiumeRefit in Fiume.

Gelli, Ugo14 Apr 19431655Fiume14 Apr 19432045Fiume17Trials.

Gelli, Ugo15 Apr 19431420Fiume15 Apr 19431700Fiume9Sonar trials.

Gelli, Ugo16 Apr 19431010Fiume16 Apr 19431430Fiume16,5Sonar trials.

Gelli, Ugo17 Apr 19430815Fiume17 Apr 19431200Fiume5Gyrocompass tests.

Gelli, Ugo18 Apr 19430000Fiume18 Apr 19430530Pola59Passage Fiume-Pola.

Gelli, Ugo23 Apr 19430900Pola23 Apr 19431305Pola16,5Sonar trials.

Gelli, Ugo27 Apr 19430830Pola27 Apr 19431030Pola16Gyrocompass tests.

Gelli, Ugo28 Apr 19430920Pola28 Apr 19431620Pola16Torpedo trials.

Gelli, Ugo29 Apr 19430850Pola29 Apr 19431110Pola3Torpedo trials.

Gelli, Ugo30 Apr 19430845Pola30 Apr 19431125Pola3Torpedo trials.

Gelli, Ugo1 May 19430830Pola1 May 19431010Pola3Gyrocompass tests.

Gelli, Ugo2 May 19430830Pola2 May 19431040Pola3Gyrocompass tests.

Gelli, Ugo3 May 19430830Pola3 May 19431040Pola3Gyrocompass tests.

Gelli, Ugo4 May 19430840Pola4 May 19431915Pola22Exercises.

Gelli, Ugo7 May 19430845Pola7 May 19431100Pola24Sonar exercises with the torpedo boat San Martino, the auxiliary Aurora and the tugs Parenzo and No.90.

Gelli, Ugo8 May 19430845Pola8 May 19431100Pola6Gyrocompass tests.

Gelli, Ugo9 May 19430840Pola9 May 19431100Pola6Gyrocompass tests.

Gelli, Ugo11 May 19430915Pola11 May 19431130Pola6Demagnetization.

Gelli, Ugo12 May 19430615Pola12 May 19431045Pola22Hydrophone tests.

Gelli, Ugo14 May 19430850Pola14 May 19431525Pola22Gyrocompass tests.

Gelli, Ugo16 May 19430030Pola16 May 19430615Fiume (Susak)60Passage Pola-Fiume.

Gelli, Ugo17 May 19430930Susak17 May 19431200Susak15Exercises.

Gelli, Ugo18 May 19431215Susak19 May 19430215Susak60Exercises.

Gelli, Ugo20 May 19431220Susak21 May 19430245Susak68Exercises.

Gelli, Ugo22 May 19431500Susak22 May 19432200Susak44Exercises.

Gelli, Ugo25 May 19431200Susak26 May 19430247Susak71Exercises.

Gelli, Ugo27 May 19431230Susak28 May 19430045Susak59Exercises.

Gelli, Ugo29 May 19431242Susak30 May 19430050Susak64Exercises.

Gelli, Ugo1 Jun 19431340Susak2 Jun 19430145Susak51Night torpedo attack exercises.

Gelli, Ugo3 Jun 19431115Susak3 Jun 19431700Susak27Torpedo attack exercises.

Gelli, Ugo6 Jun 19431100Susak7 Jun 19430103Susak42Night torpedo attack exercises.

Gelli, Ugo8 Jun 19431114Susak9 Jun 19430100Susak40Night torpedo attack exercises.

Gelli, Ugo11 Jun 19431310Susak12 Jun 19430055Fiume39Night simulated torpedo attack exercises.

Gelli, Ugo16 Jun 19431400Fiume16 Jun 19431935Fiume3Entered dock.

Gelli, Ugo18 Jun 19431550Fiume18 Jun 19431635Susak3Left dock.

Gelli, Ugo20 Jun 19430710Susak20 Jun 19431315Susak27Sonar exercises.

Gelli, Ugo21 Jun 19430310Susak21 Jun 19430650Susak20Sonar exercises.

Allegri, Raffaello24 Jun 19430618Susak24 Jun 19431050Susak26Sonar exercises.

Allegri, Raffaello26 Jun 19430635Fiume26 Jun 19431540Fiume2Sonar exercises.

Allegri, Raffaello26 Jun 19430605Fiume27 Jun 19430230FiumeExercises.

Allegri, Raffaello29 Jun 19432155Susak30 Jun 19430430Pola60Passage Susak-Pola.

Allegri, Raffaello1 Jul 19430800Pola1 Jul 19431210Pola10,5Sonar exercises with a corvette.

Allegri, Raffaello1 Jul 19431345Pola1 Jul 19432020Pola28,5Sonar exercises with a corvette.

Allegri, Raffaello10 Jul 19430800Pola10 Jul 19431115Pola8,5Sonar exercises with a corvette.

Allegri, Raffaello10 Jul 19431350Pola10 Jul 19431800Pola10,5Sonar exercises with a corvette.

Allegri, Raffaello13 Jul 19430800Pola13 Jul 19431300Pola33Sonar exercises with a corvette.

Allegri, Raffaello13 Jul 19431348Pola13 Jul 19431815Pola33Sonar exercises with a corvette.

Allegri, Raffaello15 Jul 19430730Pola15 Jul 19431250Pola31Sonar exercises with a corvette.

Allegri, Raffaello16 Jul 19431640Pola16 Jul 19431940Pola20Experimental Fantoni torpedo launch.

Allegri, Raffaello17 Jul 19430725Pola17 Jul 19431240Pola31,5Sonar exercises with the torpedo boat San Martino, the auxiliary Aurora and the tugs Marittimo and No.90.

Allegri, Raffaello23 Jul 19431455Pola23 Jul 19431805Pola18Experimental Fantoni torpedo launch.

Allegri, Raffaello1 Aug 19431630Pola1 Aug 19431855Pola32Experimental Fantoni torpedo launch.

Allegri, Raffaello4 Aug 19430730Pola4 Aug 19431250Pola21Exercises.

Allegri, Raffaello4 Aug 19431425Pola4 Aug 19431855Pola8Sonar exercises with a corvette.

Allegri, Raffaello5 Aug 19430730Pola5 Aug 19431230Pola27Exercises with a corvette.

Allegri, Raffaello5 Aug 19431615Pola5 Aug 19431830Pola14Experimental Fantoni torpedo launch.

Allegri, Raffaello7 Aug 19430725Pola7 Aug 19431310Pola32Sonar exercises with a corvette.

Allegri, Raffaello9 Aug 19431415Pola9 Aug 19431850Pola27Exercises.

Allegri, Raffaello12 Aug 19430650Pola12 Aug 19431025Pola27Sonar exercises with a corvette.

Allegri, Raffaello13 Aug 19430650Pola13 Aug 19431335Pola34Sonar exercises with a corvette.

Allegri, Raffaello14 Aug 19430700Pola14 Aug 19431305Pola33Sonar exercises with a corvette.

Allegri, Raffaello15 Aug 19430645Pola15 Aug 19431300Pola28Sonar exercises with torpedo boat Clio.

Allegri, Raffaello16 Aug 19430800Pola16 Aug 19431250Pola21Sonar exercises with torpedo boat Clio.

Allegri, Raffaello10 Sep 19431500Pola12 Sep 1943ScuttledSailed 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