Italian submarines in World War Two


Atropo (AT, N.51)
Atropo

TypeMinelaying 
ClassFoca (32) 
Laid down 10 Jul 1937 Cantieri Navale Tosi di Taranto, Taranto
Launched20 Nov 1938
Commissioned14 Feb 1939
End service
Stricken1 Feb 1948
Loss date
Loss position
History Stricken on 1st February 1948.
Fate

Commands


CommanderDate fromDate toCommand notes
C.F. Luigi Caneschi1 Jan 194018 Sep 1940
C.C. Peppino Manca18 Sep 194022 Nov 1940
C.C. Bandino Bandini23 Nov 194024 Jun 1941
C.C. Guido D'Alterio25 Jun 19413 Aug 1941
T.V. Libero Sauro4 Aug 194130 Nov 1941
S.T.V. Luigi Reni1 Dec 194128 Dec 1941
S.T.V. Pier Vittorio Casarini29 Dec 194119 Jan 1942
S.T.V. Mario Kenda20 Jan 194231 Jan 1942
T.V. Mario Priggione1 Feb 194218 Feb 1942
T.V. Mario Biagini19 Feb 19427 Apr 1942
C.F. Candido Corvetti8 Apr 194215 Apr 1942
C.C. Pietro Abate16 Apr 19426 Oct 1942
T.V. Mario Biagini7 Oct 194230 Nov 1942
S.T.V. Mario Kenda1 Dec 194216 Dec 1942
C.C. Pietro Abate16 Dec 19424 May 1943
C.C. Raul Galletti3 May 194320 May 1943
T.V. Armando Rosso19 May 19435 Jun 1943
T.V. Emerico Siriani5 Jun 194319 Jun 1943
T.V. Gino Ferrari19 Jun 194313 Jul 1943
C.C. Rino Erler13 Jul 194320 Aug 1943
T.V. Aredio Galzigna22 Aug 1943Nov 1945

Patrols and events

 CommanderDateTimePortArr. dateArr. timeArr. portMilesDescription
Caneschi, Luigi10 Jun 19401050Taranto10 Jun 19401240Taranto5,4Exercises.

1Caneschi, Luigi22 Jun 19401100Taranto26 Jun 19400700Leros643,1Supply mission to Leros, brought 27 tons of ammunition and stores.
  26 Jun 19400245
0330 (e)
36° 51'N, 26° 19'EAt 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, Luigi30 Jun 19401050Leros30 Jun 19401115Leros3,5Exercises.

Caneschi, Luigi12 Jul 19400900Leros12 Jul 19401055Leros3,3Exercises.

1bCaneschi, Luigi15 Jul 19401816Leros27 Jul 19401200Taranto1188,6Return trip from supply mission and patrol in Cerigotto Channel in 36°00'N, 23°30'E.

Caneschi, Luigi5 Aug 19400740Taranto5 Aug 19401140Taranto26,5Exercises.

Caneschi, Luigi15 Aug 19400830Taranto15 Aug 19401145Taranto13,2Exercises.

2Caneschi, Luigi27 Aug 19401120Taranto1 Sep 19400850Rhodes740,25Supply mission to Rhodes. Uneventful.

2bCaneschi, Luigi2 Sep 19402100Rhodes3 Sep 19400730Leros106Passage Rhodes-Leros.

2cCaneschi, Luigi10 Sep 19401700Leros14 Sep 19401300Taranto655,6Return trip from supply mission to Leros.

Manca, Peppino21 Oct 19400825Taranto21 Oct 19401550Taranto42Exercises.

Manca, Peppino25 Oct 19400900Taranto25 Oct 19401125Taranto8,2Exercises.

3Manca, Peppino27 Oct 19401100Taranto31 Oct 19400030Taranto650,5Minelaying operation southeast of Zante. Interrupted after the explosion of two of her mines.
  29 Oct 1940083937° 50'N, 21° 05'EAt 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, Peppino1 Nov 1940Taranto1 Nov 1940TarantoThe 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, Peppino8 Nov 19400806Taranto8 Nov 19401300Taranto33,6Exercises.

Manca, Peppino22 Nov 19400800Taranto22 Nov 19401310Taranto20,5Exercises.

4Bandini, Bandino23 Nov 19400645Taranto27 Nov 19401220Leros714Storing trip Taranto-Leros. Uneventful.

Bandini, Bandino2 Dec 19401500Leros2 Dec 19401620Leros5Exercises.

4bBandini, Bandino3 Dec 19400140Leros8 Dec 19401740Taranto821Return voyage from storing trip Leros-Taranto and brief patrol in 35°30'N, 26°30'E.

Bandini, Bandino22 Dec 19400755Taranto22 Dec 19401545Taranto46Exercises.

Bandini, Bandino23 Dec 19400805Taranto23 Dec 19401500Taranto46Exercises.

Bandini, Bandino26 Dec 19400805Taranto26 Dec 19401610Taranto49Exercises.

5Bandini, Bandino27 Dec 19400810Taranto27 Dec 19401240Taranto27,7Laid an experimental mine field. Then refit until March 1941.

Bandini, Bandino14 Mar 19410840Taranto14 Mar 19411435Taranto34,5Exercises.

Bandini, Bandino31 Mar 19410838Taranto31 Mar 19411600Taranto28,5Exercises.

Bandini, Bandino11 Apr 19410836Taranto11 Apr 19411537Taranto45,2Exercises, escorted by the pilot vessel Limbara.

Bandini, Bandino3 May 19410525Taranto3 May 19411948Taranto156,53Exercises.

Bandini, Bandino5 May 19410831Taranto5 May 19411507Taranto53,9Exercises, escorted by the pilot vessel Limbara.

6Bandini, Bandino9 May 19412238Taranto12 May 19411909DernaStoring trip Taranto to Derna with 78 tons of ammunition. Uneventful.

6bBandini, Bandino13 May 19410700Derna15 May 19411515Taranto1131Return trip from supply mission to Derna. Uneventful (mileage total).

7Bandini, Bandino18 May 19410625Taranto20 May 19412100DernaStoring trip Taranto to Derna with 79 tons of ammunition. Uneventful.

7bBandini, Bandino21 May 19410648Derna24 May 19411320Taranto1155Return trip from supply mission to Derna (mileage total).
  22 May 19410825
0930 (e)
35° 16'N, 20° 52'EAt 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.

8Bandini, Bandino5 Jun 19410533Taranto7 Jun 19412010DernaPassage Taranto to Derna with 40 tons of ammunition. Uneventful.

8bBandini, Bandino8 Jun 19410012Derna10 Jun 19411100Taranto1151,9Return trip from supply mission to Derna (mileage total).
  10 Jun 19410300
(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.

9Bandini, Bandino13 Jun 19411002Taranto15 Jun 19412131DernaPassage Taranto to Derna with 68 tons of ammunition. Uneventful.

9bBandini, Bandino16 Jun 19410320Derna19 Jun 19411110Taranto1166Return trip from supply mission to Derna. Uneventful (mileage total).

10D'Alterio, Guido25 Jun 19410925Taranto27 Jun 19412100DernaPassage Taranto to Derna with 40 tons of ammunition.
  26 Jun 1941151535° 40'N, 19° 22'EAt 1515 hours, two derelict mines were sighted and machine gunned. One was perhaps sunk.

10bD'Alterio, Guido28 Jun 19410150Derna1 Jul 19411109Taranto1045Return trip from supply mission to Derna. Uneventful (mileage total).

D'Alterio, Guido9 Jul 19410935Taranto9 Jul 19411620Taranto48Exercises.

D'Alterio, Guido10 Jul 19411030Taranto10 Jul 19411155Taranto8Exercises.

D'Alterio, Guido14 Jul 19410911Taranto14 Jul 19411459Taranto43Exercises.

D'Alterio, Guido17 Jul 19410940Taranto17 Jul 19411443Taranto43Exercises.

11D'Alterio, Guido19 Jul 19411228Taranto20 Jul 19411044Taranto218Supply mission to Bardia but then recalled. Uneventful

11bD'Alterio, Guido21 Jul 19411145Taranto23 Jul 19412330DernaPassage Taranto to Derna with 47 tons of ammunition.
  22 Jul 19410920+34° 47'N, 19° 43'EAt 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 1941222034° 47'N, 19° 43'EAt 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 1941220033° 00'N, 22° 36'EAt 2200 hours, a small vessel was sighted on a westerly course. Atropo made an enemy report.

11cD'Alterio, Guido25 Jul 19410305Derna27 Jul 19411245Taranto1163Return trip from supply mission to Derna. Uneventful (mileage total).

Sauro, Libero5 Aug 19410732Taranto5 Aug 19411530Taranto30Exercises.

Sauro, Libero6 Aug 19410805Taranto6 Aug 19411434Taranto25,5Trials, escorted by the pilot vessel Limbara.

Sauro, Libero7 Aug 19411248Taranto7 Aug 19411720Taranto18Exercises.

12Sauro, Libero12 Aug 19411230Taranto16 Aug 19412155Bardia1266,5Supply 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.

12bSauro, Libero17 Aug 19410240Bardia20 Aug 19411521Taranto1539Return trip from supply mission to Bardia (with a German passenger, the soldier Heinz Bollig on furlough). Uneventful.

Sauro, Libero9 Oct 19410825Taranto9 Oct 19411420Taranto35Exercises, escorted by the auxiliary Sparviero.

Sauro, Libero14 Oct 19410830Taranto14 Oct 19411800Taranto53,5Exercises.

Sauro, Libero15 Oct 19410900Taranto15 Oct 19411715Taranto65Exercises.

Sauro, Libero16 Oct 19411700Taranto16 Oct 19411850Taranto11Exercises.

13Sauro, Libero17 Oct 19411237Taranto22 Oct 19410230BardiaSupply mission to Bardia with 57 tons of petrol (2987 x 20-litre cans).
  19 Oct 19410910
0904 (e)
34° 29'N, 22° 30'EAt 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 1941114834° 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.

13bSauro, Libero23 Oct 19410715Bardia26 Oct 19411310Taranto1527Return trip from supply mission to Bardia. Uneventful (mileage total).

Sauro, Libero6 Nov 19410941Taranto6 Nov 19411145Taranto15Exercises.

14Sauro, Libero13 Nov 19411040Taranto17 Nov 19411730Navarino (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 19410400
(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.

14bSauro, Libero19 Nov 19410600Navarino20 Nov 19411433Taranto1254Return trip for repairs (mileage total).

Reni, Luigi1 Dec 1941Taranto28 Dec 1941TarantoAt Taranto for repairs.

Casarini, Pier Vittorio29 Dec 1941Taranto19 Jan 1942TarantoAt Taranto for repairs.

Kenda, Mario20 Jan 1942Taranto31 Jan 1942TarantoAt Taranto for repairs.

Priggione, Mario1 Feb 1942Taranto18 Feb 1942TarantoAt Taranto for repairs.

Biagini, Mario6 Apr 19420815Taranto6 Apr 19421158Taranto7,5Trials.

Corvetti, Candido11 Apr 19420916Taranto11 Apr 19421646Taranto36,5Trials escorted by MAS D.3.

Abate, Pietro16 Apr 19420855Taranto16 Apr 19421700Taranto45,5Trials, escorted by the minesweeper R.D.13.

Abate, Pietro19 Apr 19420705Taranto19 Apr 19421325Taranto34,5Exercises 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, Pietro23 Apr 19420715Taranto23 Apr 19421020Taranto7,2Trials.

Abate, Pietro2 May 19420900Taranto2 May 19421047Taranto2,2Trials.

Abate, Pietro14 May 19420906Taranto14 May 19421035Taranto2,4Trials.

Abate, Pietro28 May 19420900Taranto28 May 19421030Taranto2,5Trials.

Abate, Pietro29 May 19420815Taranto29 May 19421820Taranto45Trials and exercises, escorted by the minesweeper R.D.30.

Abate, Pietro30 May 19420815Taranto30 May 19421218Taranto6,2Trials.

Abate, Pietro8 Jun 19420815Taranto8 Jun 19421705Taranto56Exercises.

15Abate, Pietro14 Jun 19420830Taranto18 Jun 19421410Taranto797Patrolled southeast of Malta to intercept en enemy convoy. Uneventful.
  17 Jun 19420930At 0930 hours, a derelict mine was seen and sunk by machine gun fire.

Abate, Pietro20 Jun 19421330Taranto20 Jun 19421535Taranto8Sailed for patrol, but then recalled.

16Abate, Pietro23 Jun 19421040Taranto26 Jun 19422020DernaSupply 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.

16bAbate, Pietro27 Jun 19420200Derna30 Jun 19421240Taranto1175,5Return trip from supply mission to Derna (mileage total).
  27 Jun 19421400At 0930 hours, a derelict mine was seen through the periscope. Atropo surfaced and sank it by machine gun fire.

17Abate, Pietro6 Jul 19421115Taranto9 Jul 19422015Derna (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.

17bAbate, Pietro9 Jul 19422100Derna10 Jul 19420730Marsa El HilalPassage Derna-Marsa El Hilal. Uneventful.

17cAbate, Pietro11 Jul 19422015Marsa El Hilal13 Jul 19420900TobrukPassage 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 19421800+
(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.

17dAbate, Pietro13 Jul 19421800Tobruk16 Jul 19421145Taranto1555Return trip from supply mission to Ras Hilal, Derna and Tobruk. Apparently sailed with Narvalo, but then went ahead (mileage total).
  13 Jul 19421800+
(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.

18Abate, Pietro21 Jul 19421120Taranto24 Jul 19420100DernaSupply 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 19420940At 0940 hours, three Italian aircraft were seen and exchanged recognition signals.

18bAbate, Pietro24 Jul 19422000Derna25 Jul 19420610Ras HilalPassage Derna-Taranto, but diverted to Ras Hilal for repairs of defective diesel.
  25 Jul 19420535
(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.

18cAbate, Pietro25 Jul 19422200Ras Hilal28 Jul 19421110Taranto1191Return trip from supply mission to Derna and Ras Hilal via 34°50'N, 22°10'E. Uneventful (mileage total).
  25 Jul 19420535
(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 1942121034° 50'N, 22° 10'EAt 1210 hours, an Italian aircraft was seen and exchanged recognition signals.

Abate, Pietro10 Aug 19421230Taranto10 Aug 19421640Taranto25Trials.

19Abate, Pietro12 Aug 19421855Taranto15 Aug 19421000TripoliSupply mission to Tripoli with 51.74 tons of petrol. Uneventful.

19bAbate, Pietro15 Aug 19421600Tripoli18 Aug 19421530Taranto1354Return trip from supply mission to Tripoli. Uneventful (mileage total).

20Abate, Pietro1 Sep 19421105Taranto4 Sep 19420800BenghaziSupply mission to Benghazi with 78 tons of stores. Uneventful.

20bAbate, Pietro4 Sep 19421530Benghazi7 Sep 19421200Taranto1213Return trip from supply mission to Benghazi (mileage total).
  5 Sep 19421630At 1630 hours, a steamer was sighted and chased until 1700 hours when she turned out to be an Italian hospital ship.

21Abate, Pietro15 Sep 19421100Taranto18 Sep 19420800BenghaziSupply mission to Benghazi with 67 tons of stores.
  16 Sep 19422300At 2300 hours, an Italian hospital ship was observed on a NW course.

21bAbate, Pietro19 Sep 19421700Benghazi22 Sep 19421130Taranto1147Return trip from supply mission to Benghazi. Uneventful (mileage total).

22Biagini, Mario9 Oct 19421130Taranto12 Oct 19420840BenghaziSupply mission to Benghazi with 38.9 tons of stores. Uneventful.

22bBiagini, Mario12 Oct 19421630Benghazi15 Oct 19421700Taranto1154Return trip after supply mission. Uneventful (mileage total).

23Biagini, Mario23 Oct 19421055Taranto26 Oct 19421055TripoliSupply mission to Benghazi, but diverted to Tripoli with 50.502 tons of petrol for Italian Army. Document shows it as 23rd patrol. Uneventful.

23bBiagini, Mario27 Oct 19421350Tripoli30 Oct 19421530Taranto1171Return trip after supply mission (mileage total).
  29 Oct 19421310At 1310 houra, an Italian hospital ship was sighted at a distance of 6,000 metres, steering 130°.

24Biagini, Mario10 Nov 19421115Taranto13 Nov 19420800TripoliSupply 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.

24bBiagini, Mario14 Nov 19421350Tripoli16 Nov 19421605Taranto1254Return trip from supply mission. Uneventful. Heard only distant explosions (mileage total).

Kenda, Mario1 Dec 1942Taranto16 Dec 1942TarantoIn Taranto for refit and repairs.

Abate, Pietro3 Feb 19430900Taranto3 Feb 19431240Taranto23Trials.

Abate, Pietro4 Feb 19430915Taranto4 Feb 19431215Taranto13Trials.

Abate, Pietro6 Feb 19430833Taranto6 Feb 19431545Taranto42,5Trials.

Abate, Pietro9 Feb 19430905Taranto9 Feb 19431700Taranto66,5Trials.

Abate, Pietro19 Feb 19430830Taranto19 Feb 19431450Taranto32Sonar exercises with the torpedo boat Antares.

Abate, Pietro21 Feb 19430530Taranto21 Feb 19431250Taranto25Sonar exercises with the destroyer Granatiere and the torpedo boat Antares.

Abate, Pietro22 Feb 19430745Taranto22 Feb 19431245Taranto22,5Sonar exercises with the destroyer Granatiere and the torpedo boat Antares.

Abate, Pietro4 Mar 19430745Taranto4 Mar 19431245Taranto24Sonar exercises with the torpedo boat Perseo.

Abate, Pietro30 Mar 19430830Taranto30 Mar 19431200Taranto17Laid an experimental minefield.

Abate, Pietro31 Mar 19431445Taranto31 Mar 19431915Taranto25Sonar exercises with the torpedo boat Climene.

Abate, Pietro4 Apr 19430830Taranto4 Apr 19431130Taranto20Exercises.

Abate, Pietro6 Apr 19430645Taranto6 Apr 19431140Taranto29,4Sonar trials with submarine chaser Malinska [with Admiral Federico Martinengo on board].

Abate, Pietro15 Apr 19430630Taranto15 Apr 19431200Taranto34Exercises.

Abate, Pietro3 May 19430712Taranto3 May 19431410Taranto31Exercises.

Galletti, Raul18 May 19431215Taranto18 May 19431755Taranto23Exercises.

Galletti, Raul19 May 19431250Taranto19 May 19431822Taranto22Exercises [with the auxiliary Claretta?]

Galletti, Raul20 May 19430740Taranto20 May 19431145Taranto24Exercises.

Rosso, Armando21 May 19430740Taranto21 May 19431515Taranto32Exercises.

25Rosso, Armando23 May 19431900Taranto30 May 19430010Lampedusa632Supply mission to Lampedusa (foodstuff and ammunition). Uneventful.

25bRosso, Armando30 May 19430445Lampedusa30 May 19432200LampedusaLeft Lampedusa to submerge, during daylight hours, outside the harbour and returned to complete the disembarkation of her cargo.

25cRosso, Armando31 May 19430120Lampedusa4 Jun 19430330Augusta264Return trip from supply mission to Lampedusa.
  1 Jun 1943003034° 40'N, 14° 03'EAt 0030 hours, an aircraft dropped flares over the submarine. Atropo crash-dived.

26Siriani, Emerico6 Jun 19432000Augusta10 Jun 19430230LampedusaSupply mission to Lampedusa. Uneventful.

26bSiriani, Emerico10 Jun 19430434Lampedusa10 Jun 19432117LampedusaLeft Lampedusa to submerge during daylight hours outside the harbour and returned to complete the disembarkation of her cargo.

26cSiriani, Emerico11 Jun 19430110Lampedusa16 Jun 19430820Taranto932Return trip from supply mission to Lampedusa (mileage total).
  11 Jun 1943225534° 40'N, 13° 39'EAt 2255 hours, an aircraft was seen and the submarine dived.
  11 Jun 1943232034° 40'N, 13° 39'EAt 2320 hours, an aircraft was seen and the submarine dived.

Ferrari, Gino28 Jun 19430835Taranto28 Jun 19431235Taranto34Exercises.

Ferrari, Gino6 Jul 19430415Taranto6 Jul 19431326Taranto77,8Exercises with the torpedo boats Pegaso and Partenope.

Ferrari, Gino12 Jul 19430510Taranto12 Jul 19431055Taranto40Exercises with the torpedo boats Pallade and Partenope.

Erler, Rino14 Jul 19431515Taranto14 Jul 19431818Taranto32Trials.

Erler, Rino17 Jul 19431000Taranto17 Jul 19431200Taranto1,5Trials.

Erler, Rino21 Jul 19431100Taranto21 Jul 19431130Taranto1Entered dock.

Erler, Rino23 Jul 19431220Taranto23 Jul 19431250Taranto1Left dock.

Erler, Rino26 Jul 19430823Taranto26 Jul 19431215Taranto28Trials.

Erler, Rino27 Jul 19430839Taranto27 Jul 19431055Taranto16,5Laid a dummy minefield.

Galzigna, Aredio23 Aug 19430807Taranto23 Aug 19431235Taranto26Exercises.

Galzigna, Aredio28 Aug 19431153Taranto28 Aug 19431957Taranto45Exercises with the submarine Vortice and steam trawler Claretta.

Galzigna, Aredio29 Aug 19430539Taranto29 Aug 19431555Taranto59Exercises with torpedo boats Aretusa and Clio.

Galzigna, Aredio31 Aug 19430805Taranto31 Aug 19431220Taranto20Exercises 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 19430900+40° 24'N, 17° 12'EAtropo 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, Aredio6 Sep 19431135Taranto6 Sep 19431922Taranto41Exercises.

Galzigna, Aredio7 Sep 19430807Taranto7 Sep 19431737Taranto31Exercises.

Galzigna, Aredio8 Sep 19430550Taranto8 Sep 19431730Taranto36Exercises.

Galzigna, Aredio12 Sep 19430955Taranto13 Sep 19432035Malta342Sailed with the submarines Jalea and Bandiera, escorted by the destroyers Riboty and HMS Troubridge for transfer from Taranto to Malta to surrender.
  13 Sep 19430020At 0020 hours, the battleship Giulio Cesare and the seaplane tender Miraglia were sighted proceeding to Malta.
  13 Sep 19430300At 0300 hours, a British convoy of six merchant vessels escorted by two destroyers and two major warships was sighted.
  13 Sep 19431320At 1320 hours, the destroyer HMS Troubridge was encountered and led the submarines Atropo, Jalea and Bandiera, and the destroyer Riboty to Malta.

Galzigna, Aredio14 Sep 19431644Malta14 Sep 19431930Malta8Changed anchorage.

Galzigna, Aredio1 Oct 19430830Marsa Scirocco (Malta)1 Oct 19431030La Valette2Changed anchorage.

Galzigna, Aredio16 Oct 19430830Malta21 Oct 19430855Haifa1170Passage Malta to Haifa with the submarines Menotti, Zoea and Corridoni.

27Galzigna, Aredio26 Oct 19432315Haifa30 Oct 19432100Portolago (Leros)806Supply mission to Leros.
  27 Oct 19431330At 1330 hours, a sailing vessel was sighted on a southerly course.
  28 Oct 19431015At 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 19431055At 1055 hours, two twin-engine aircraft were seen at a distance of 8,000 metres and the submarine dived.

27bGalzigna, Aredio31 Oct 19430330Portolago (Leros)3 Nov 19431900Haifa658Return trip from supply mission to Leros. Uneventful.

28Galzigna, Aredio16 Nov 19430100Haifa19 Nov 19430705Haifa506,5Storing 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 19431425At 1425 hours, three British destroyers of the HUNT class were sighted and exchanged recognition signals.

29Galzigna, Aredio22 Nov 19431010Haifa24 Nov 19430825Castelrosso438Supply mission to Castelrosso. Uneventful.

29bGalzigna, Aredio25 Nov 19431720Castelrosso27 Nov 19430800Haifa382Return trip from supply mission to Castellorizo. Took one passenger, an Italian soldier who had escaped from the Germans.
  26 Nov 19431327At 1327 hours, two British destroyers of the HUNT class escorting three steamers were sighted.

Galzigna, Aredio28 Nov 19431800Haifa3 Dec 19431710Taranto1141,8Passage 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, Aredio21 Jul 19440835Taranto21 Jul 19441715Taranto71,6Trials.

Galzigna, Aredio24 Jul 19440815Taranto24 Jul 19441910Taranto97,5Trials.

Galzigna, Aredio28 Jul 19440810Taranto28 Jul 19441810Taranto108,5Trials.

Galzigna, Aredio1 Aug 19440925Taranto1 Aug 19441600Taranto5Gyrocompass tests.

Galzigna, Aredio2 Aug 19440855Taranto2 Aug 19441716Taranto39,9Exercises.

Galzigna, Aredio6 Aug 19440635Taranto6 Aug 19441745Taranto75Trials.

Galzigna, Aredio23 Aug 19440810Taranto23 Aug 19441730Taranto51,4Exercises.

Galzigna, Aredio29 Aug 19440615Taranto29 Aug 19441727Taranto36,2Exercises. She was then deemed ready to join US ASW training in the Atlantic.

Galzigna, Aredio15 Sep 19441710Taranto17 Sep 19441435Augusta300Passage Taranto-Augusta, escorted by the torpedo boats Fortunale and Ariete and the corvettes Danaide and Sfinge.

Galzigna, Aredio21 Sep 19441726Augusta27 Sep 19441432Gibraltar1142Passage Augusta-Gibraltar.

Galzigna, Aredio7 Oct 19441053Gibraltar20 Oct 19441917Port Royal (Bermuda)3206Passage 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, Aredio7 Nov 19441100Port Royal (Bermuda)7 Nov 19441840Port St. George (Bermuda)48Passage Port Royal-Port St. George (Bermuda). She was reported to be in very good condition.

Galzigna, Aredio8 Nov 19440715Port St. George (Bermuda)8 Nov 19441616Port St. George (Bermuda)50Exercises with American vessels.

Galzigna, Aredio9 Nov 19440706Port St. George (Bermuda)9 Nov 19441724Port St. George (Bermuda)67,5Exercises with American vessels. Possibly with the group formed around the escort carrier USS Croatan.

Galzigna, Aredio10 Nov 19440719Port St. George (Bermuda)10 Nov 19441714Port St. George (Bermuda)57Exercises with American vessels. Possibly with the group formed around the escort carrier USS Croatan.

Galzigna, Aredio11 Nov 19440710Port St. George (Bermuda)13 Nov 19440910Port St. George (Bermuda)295,3Exercises 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, Aredio14 Nov 19440722Port St. George (Bermuda)14 Nov 19441631Port St. George (Bermuda)43Exercises with American vessels.

Galzigna, Aredio15 Nov 19440715Port St. George (Bermuda)15 Nov 19441615Port St. George (Bermuda)47,5Exercises with the A/S group built around the escort carrier USS Core (CVE-13) group of TG 22.4.

Galzigna, Aredio17 Nov 19440630Port St. George (Bermuda)17 Nov 19441730Port St. George (Bermuda)84Exercises with American vessels.

Galzigna, Aredio18 Nov 19440737Port St. George (Bermuda)18 Nov 19441608Port St. George (Bermuda)48,5Exercises 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, Aredio20 Nov 19440720Port St. George (Bermuda)20 Nov 19441455Port St. George (Bermuda)50Exercises with American vessels.

Galzigna, Aredio21 Nov 19440829Port St. George (Bermuda)21 Nov 19441711Port St. George (Bermuda)55Exercises with the destroyers USS Carmick (DD-493), USS Doyle (DD-494) and USS Frankford (DD-497) of DESRON 17.

Galzigna, Aredio22 Nov 19440730Port St. George (Bermuda)22 Nov 19441608Port St. George (Bermuda)34,6Exercises with American vessels. Possibly with the group built around the escort carrier USS Core (CVE-13).

Galzigna, Aredio26 Nov 19440745Port St. George (Bermuda)26 Nov 19441641Port St. George (Bermuda)43Exercises with American vessels.

Galzigna, Aredio28 Nov 19440746Port St. George (Bermuda)28 Nov 19441540Port St. George (Bermuda)46,7Exercises with American vessels.

Galzigna, Aredio30 Nov 19440715Port St. George (Bermuda)30 Nov 19441720Port St. George (Bermuda)70Exercises 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, Aredio2 Dec 19440745Port St. George (Bermuda)2 Dec 19441538Port St. George (Bermuda)43Exercises with American vessels.

Galzigna, Aredio3 Dec 19440740Port St. George (Bermuda)3 Dec 19441730Port St. George (Bermuda)52Exercises with American vessels.

Galzigna, Aredio4 Dec 19441358Port St. George (Bermuda)4 Dec 19441630Port Royal (Bermuda)25Passage Port St. George-Port Royal (Bermuda).

Galzigna, Aredio6 Dec 19440715Port Royal (Bermuda)6 Dec 19440814Malabar (Bermuda)5Passage Port Royal-Malabar (Bermuda) for docking.

Galzigna, Aredio10 Dec 19440715Malabar (Bermuda)10 Dec 19440814Port St. George (Bermuda)20Passage Malabar-Port St. George (Bermuda). Exact date? Date listed in documents as 11th December but apparently in error?

Galzigna, Aredio11 Dec 19440710Port St. George (Bermuda)13 Dec 19440910Port St. George (Bermuda)305,3Exercises with the patrol vessel USS PCE-846, escort-carrier USS Core (CVE-13) and her seven escorts.

Galzigna, Aredio14 Dec 19440735Port St. George (Bermuda)14 Dec 19441826Port St. George (Bermuda)85Exercises with American vessels.

Galzigna, Aredio15 Dec 19440650Port St. George (Bermuda)15 Dec 19441610Port St. George (Bermuda)48Exercises with American vessels.

Galzigna, Aredio17 Dec 19440745Port St. George (Bermuda)17 Dec 19441658Port St. George (Bermuda)56Exercises with the destroyers USS Gainard (DD-706) and USS Alfred A. Cunningham (DD-752).

Galzigna, Aredio18 Dec 19440700Port St. George (Bermuda)18 Dec 19441608Port St. George (Bermuda)49Exercises with American vessels.

Galzigna, Aredio20 Dec 19440750Port St. George (Bermuda)20 Dec 19441616Port St. George (Bermuda)52Exercises with American vessels.

Galzigna, Aredio21 Dec 19441635Port St. George (Bermuda)22 Dec 19440534Port St. George (Bermuda)120Exercises with American vessels.

Galzigna, Aredio23 Dec 19440820Port St. George (Bermuda)23 Dec 19441615Port St. George (Bermuda)38Exercises with American vessels.

Galzigna, Aredio24 Dec 19440758Port St. George (Bermuda)24 Dec 19441633Port St. George (Bermuda)56Exercises with the destroyer USS Compton (DD-705).

Galzigna, Aredio2 Jan 19450800Port St. George (Bermuda)5 Jan 19451327Port St. George (Bermuda)446,3Exercises 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, Aredio9 Jan 19450754Port St. George (Bermuda)11 Jan 19451802Port St. George (Bermuda)330,6Exercises 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, Aredio13 Jan 19450807Port St. George (Bermuda)13 Jan 19451628Port St. George (Bermuda)49Exercises with the destroyer escorts USS Cecil J. Doyle (DE-368).

Galzigna, Aredio15 Jan 19450703Port St. George (Bermuda)15 Jan 19451639Port St. George (Bermuda)50Exercises with American vessels. Possibly exercising with the high speed transport USS Yokes (APD-69).

Galzigna, Aredio16 Jan 19450809Port St. George (Bermuda)16 Jan 19451612Port St. George (Bermuda)41Exercises with American vessels.

Galzigna, Aredio18 Jan 19450745Port St. George (Bermuda)18 Jan 19451723Port St. George (Bermuda)70Exercises with American vessels.

Galzigna, Aredio19 Jan 19450802Port St. George (Bermuda)19 Jan 19451651Port St. George (Bermuda)55,4Exercises with American vessels. Possibly with the high speed transports USS Gosselin (APD-126).

Galzigna, Aredio20 Jan 19450815Port St. George (Bermuda)20 Jan 19451415Port St. George (Bermuda)40,3Exercises with American vessels. Possibly with the group formed around the escort carrier USS Croatan.

Galzigna, Aredio27 Jan 19450806Port St. George (Bermuda)27 Jan 19451638Port St. George (Bermuda)47Exercises with American vessels. Possibly the high speed transports USS Pavlic (APD-70) and USS Gosselin (APD-126).

Galzigna, Aredio28 Jan 19450830Port St. George (Bermuda)28 Jan 19451624Port St. George (Bermuda)41Exercises with American vessels.

Galzigna, Aredio1 Feb 19450730Port St. George (Bermuda)1 Feb 19451643Port St. George (Bermuda)64,2Exercises with American vessels.

Galzigna, Aredio2 Feb 19450703Port St. George (Bermuda)2 Feb 19451617Port St. George (Bermuda)53Exercises with American vessels.

Galzigna, Aredio3 Feb 19450802Port St. George (Bermuda)3 Feb 19451618Port St. George (Bermuda)43Exercises with American vessels.

Galzigna, Aredio4 Feb 19450802Port St. George (Bermuda)4 Feb 19451527Port St. George (Bermuda)35Exercises with American vessels.

Galzigna, Aredio6 Feb 19450650Port St. George (Bermuda)6 Feb 19451518Port St. George (Bermuda)35Exercises with American vessels.

Galzigna, Aredio13 Feb 19450747Port St. George (Bermuda)13 Feb 19451602Port St. George (Bermuda)40,5Exercises with the destroyers USS Satterlee (DD-626) , USS Herndon (DD-638) and USS Tillman (DD-641).

Galzigna, Aredio14 Feb 19450747Port St. George (Bermuda)14 Feb 19451602Port St. George (Bermuda)39,5Exercises with the destroyer escort USS Cross (DE-448) and the high speed transport USS Register (APD-92).

Galzigna, Aredio16 Feb 19450653Port St. George (Bermuda)16 Feb 19451625Port St. George (Bermuda)49,5Exercises with the frigates USS Lorain (PF-93) and USS Racine (PF-100).

Galzigna, Aredio22 Feb 19450700Port St. George (Bermuda)22 Feb 19451617Port St. George (Bermuda)54,5Exercises with American vessels of Killer Group of C.T.G. 23.1. Escorted out by the minesweeper USS Prime (AM-279).

Galzigna, Aredio24 Feb 19450743Port St. George (Bermuda)24 Feb 19451605Port St. George (Bermuda)34Exercises with American vessels.

Galzigna, Aredio25 Feb 19450755Port St. George (Bermuda)25 Feb 19451623Port St. George (Bermuda)38Exercises with American vessels.

Galzigna, Aredio26 Feb 19450650Port St. George (Bermuda)26 Feb 19451558Port St. George (Bermuda)38Exercises with American vessels.

Galzigna, Aredio27 Feb 19450740Port St. George (Bermuda)27 Feb 19451657Port St. George (Bermuda)46Exercises with American vessels.

Galzigna, Aredio3 Mar 19450652Port St. George (Bermuda)7 Mar 19450857Guantanamo (Cuba)979Passage 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, Aredio11 Mar 19450721Guantanamo11 Mar 19452005Guantanamo46,9Exercises with American vessels. Possibly with the frigate USS Davenport (PF-69).

Galzigna, Aredio12 Mar 19450716Guantanamo12 Mar 19451630Guantanamo33,5Exercises with American vessels. Possibly with the frigate USS Davenport (PF-69).

Galzigna, Aredio13 Mar 19450729Guantanamo13 Mar 19451520Guantanamo34Exercises with American vessels.

Galzigna, Aredio15 Mar 19450722Guantanamo15 Mar 19451621Guantanamo35Exercises with American vessels. Possibly the frigate USS Davenport (PF-69).

Galzigna, Aredio17 Mar 19450722Guantanamo17 Mar 19451530Guantanamo36,2Exercises with American vessels.

Galzigna, Aredio18 Mar 19450723Guantanamo18 Mar 19451615Guantanamo42Exercises with American vessels.

Galzigna, Aredio27 Mar 19450712Guantanamo27 Mar 19451511Guantanamo37Exercises 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, Aredio28 Mar 19450714Guantanamo28 Mar 19451703Guantanamo50Exercises with the destroyer escort USS Marchand (DE-249).

Galzigna, Aredio29 Mar 19450711Guantanamo29 Mar 19451614Guantanamo33Exercises with American vessels.

Galzigna, Aredio30 Mar 19450730Guantanamo30 Mar 19451426Guantanamo31Exercises with American vessels.

Galzigna, Aredio31 Mar 19450714Guantanamo31 Mar 19451420Guantanamo27Exercises 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, Aredio1 Apr 19450718Guantanamo1 Apr 19451440Guantanamo34Exercises with American vessels.

Galzigna, Aredio2 Apr 19450715Guantanamo2 Apr 19451350Guantanamo30Exercises with American vessels.

Galzigna, Aredio3 Apr 19450713Guantanamo3 Apr 19451545Guantanamo35Exercises with the destroyer USS Henry W. Tucker (DD-875).

Galzigna, Aredio4 Apr 19450715Guantanamo4 Apr 19451650Guantanamo33Exercises with American vessels.

Galzigna, Aredio5 Apr 19450713Guantanamo5 Apr 19451625Guantanamo41Exercises with American vessels.

Galzigna, Aredio8 Apr 19450722Guantanamo8 Apr 19451551Guantanamo33,5Exercises with American vessels.

Galzigna, Aredio9 Apr 19450722Guantanamo9 Apr 19451625Guantanamo37Exercises with American vessels.

Galzigna, Aredio11 Apr 19450724Guantanamo11 Apr 19451508Guantanamo38Exercises with American vessels.

Galzigna, Aredio12 Apr 19450700Guantanamo12 Apr 19451530Guantanamo32Exercises with American vessels.

Galzigna, Aredio28 Apr 19450950Guantanamo28 Apr 19451647Guantanamo26Trials.

Galzigna, Aredio30 Apr 19450725Guantanamo30 Apr 19451512Guantanamo33Exercises with American vessels.

Galzigna, Aredio2 May 19450715Guantanamo2 May 19451708Guantanamo44Exercises with American vessels.

Galzigna, Aredio4 May 19450715Guantanamo4 May 19451517Guantanamo32Exercises with American vessels.

Galzigna, Aredio5 May 19450720Guantanamo5 May 19451723Guantanamo48Exercises with American vessels.

Galzigna, Aredio9 May 19450640Guantanamo9 May 19451719Guantanamo56Exercises with American vessels.

Galzigna, Aredio10 May 19450635Guantanamo10 May 19451651Guantanamo67Exercises with American vessels.

Galzigna, Aredio20 May 19450719Guantanamo20 May 19451349Guantanamo31Exercises with American vessels.

Galzigna, Aredio21 May 19450625Guantanamo21 May 19451551Guantanamo48Exercises with American vessels.

Galzigna, Aredio23 May 19450645Guantanamo23 May 19451432Guantanamo31Exercises with American vessels.

Galzigna, Aredio24 May 19450647Guantanamo24 May 19451707Guantanamo64Exercises with American vessels.

Galzigna, Aredio25 May 19450715Guantanamo25 May 19451401Guantanamo34Exercises with American vessels.

Galzigna, Aredio27 May 19450933Guantanamo27 May 19451720Guantanamo36Exercises with American vessels.

Galzigna, Aredio28 May 19450630Guantanamo28 May 19451522Guantanamo42Exercises with American vessels.

Galzigna, Aredio29 May 19450630Guantanamo29 May 19451427Guantanamo35Exercises with American vessels.

Galzigna, Aredio30 May 19450630Guantanamo30 May 19451523Guantanamo35Exercises with American vessels.

Galzigna, Aredio31 May 19450630Guantanamo31 May 19451538Guantanamo30Exercises with the destroyer USS Vogelgesang (DD-862) and the minesweeper USS Scoter (AM-381).

Galzigna, Aredio1 Jun 19450651Guantanamo1 Jun 19451521Guantanamo34Exercises with the destroyer escorts USS Booth (DE-170), USS Carroll (DE-171) and USS Eldridge (DE-171).

Galzigna, Aredio4 Jun 19450630Guantanamo4 Jun 19451423Guantanamo40Exercises with American vessels.

Galzigna, Aredio6 Jun 19450636Guantanamo6 Jun 19451537Guantanamo41,5Exercises with American vessels. Possibly exercised with the destroyer escort USS Ramsden (DE-382).

Galzigna, Aredio10 Jun 19450631Guantanamo10 Jun 19451531Guantanamo38Exercises with American vessels.

Galzigna, Aredio11 Jun 19450647Guantanamo11 Jun 19451554Guantanamo35Exercises with the destroyer escorts USS Haveson (DE-316) and USS Joyce (DE-317).

Galzigna, Aredio12 Jun 19450828Guantanamo12 Jun 19451618Guantanamo33Exercises with American vessels. The destroyer USS Dyess (DD-880) carried exercises with Atropo but no precise dates are given.

Galzigna, Aredio13 Jun 19450640Guantanamo13 Jun 19451731Guantanamo50Exercises with American vessels.

Galzigna, Aredio22 Jun 19450854Guantanamo22 Jun 19451652Guantanamo31Exercises with the destroyer USS Ericsson (DD-440).

Galzigna, Aredio23 Jun 19450629Guantanamo23 Jun 19451426Guantanamo31Exercises with American vessels.

Galzigna, Aredio24 Jun 19451000Guantanamo24 Jun 19451735Guantanamo35Exercises with the destroyer escorts USS Marchand (DE-249) and USS Hurst (DE-250). Possibly also exercised with USS Camp (DE-251).

Galzigna, Aredio25 Jun 19450829Guantanamo25 Jun 19451645Guantanamo31Exercises with the destroyer USS Steinaker (DD-863).

Galzigna, Aredio26 Jun 19450704Guantanamo26 Jun 19451450Guantanamo34Exercises with American vessels.

Galzigna, Aredio27 Jun 19450625Guantanamo27 Jun 19451511Guantanamo34Exercises with the destroyer USS Bordelon (DD-881).

Galzigna, Aredio28 Jun 19450654Guantanamo28 Jun 19451424Guantanamo26Exercises with American vessels.

Galzigna, Aredio29 Jun 19450639Guantanamo29 Jun 19451547Guantanamo29Exercises with American vessels.

Galzigna, Aredio30 Jun 1945Guantanamo30 Jun 1945GuantanamoExercises with the destroyer escorts USS Daniel (DE-335) and USS Dale W. Peterson (DE-337).

Galzigna, Aredio1 Jul 19450712Guantanamo1 Jul 19451530Guantanamo27Exercises with American vessels.

Galzigna, Aredio2 Jul 19450920Guantanamo2 Jul 19451800Guantanamo29,5Exercises with American vessels.

Galzigna, Aredio3 Jul 19450646Guantanamo3 Jul 19451502Guantanamo25Exercises with American vessels.

Galzigna, Aredio4 Jul 19450650Guantanamo4 Jul 19451622Guantanamo46Exercises with the destroyer escort USS Hill (DE-141).

Galzigna, Aredio5 Jul 19450854Guantanamo5 Jul 19451733Guantanamo31Exercises with American vessels.

Galzigna, Aredio6 Jul 19450642Guantanamo6 Jul 19451450Guantanamo33,5Exercises with American vessels.

Galzigna, Aredio9 Jul 19450640Guantanamo9 Jul 19451447Guantanamo25,5Exercises with American vessels.

Galzigna, Aredio11 Jul 19450910Guantanamo11 Jul 19451658Guantanamo23,5Exercises with American vessels.

Galzigna, Aredio13 Jul 19451105Guantanamo13 Jul 19451700Guantanamo18Exercises with American vessels.

Galzigna, Aredio14 Jul 19451006Guantanamo14 Jul 19451740Guantanamo24Exercises with the destroyer escorts USS Frost (DE-145) and USS Huse (DE-144).

Galzigna, Aredio16 Jul 19451224Guantanamo16 Jul 19451735Guantanamo21Exercises with American vessels.

Galzigna, Aredio17 Jul 19450913Guantanamo17 Jul 19451408Guantanamo24Exercises with the destroyer escort USS Lansing (DE-388).

Galzigna, Aredio20 Jul 19450642Guantanamo20 Jul 19451442Guantanamo25Exercises with American vessels.

Galzigna, Aredio22 Jul 19451903Guantanamo22 Jul 19452359Guantanamo21,5Exercises with the destroyer escorts USS Micka (DE-176), USS Straub (DE-181) and USS Gustafson (DE-182). A rare night exercise!

Galzigna, Aredio27 Jul 1945Guantanamo27 Jul 1945GuantanamoExercises with the destroyer escorts USS Roy O. Hale (DE-336) and USS Martin H. Ray (DE-338).

Galzigna, Aredio3 Aug 19450642Guantanamo3 Aug 19450919Guantanamo13Exercises with the destroyers USS Gyatt (DD-712) and USS Charles P. Cecil (DD-835), but Atropo had defects and had to turn back.

Galzigna, Aredio4 Aug 19450934Guantanamo4 Aug 19451659Guantanamo24Exercises with American vessels.

Galzigna, Aredio5 Aug 19450638Guantanamo5 Aug 19451454Guantanamo24,5Exercises with American vessels.

Galzigna, Aredio7 Aug 19450642Guantanamo7 Aug 19451430Guantanamo27Exercises with American vessels.

Galzigna, Aredio8 Aug 19450645Guantanamo8 Aug 19451440Guantanamo26,5Exercises with American vessels.

Galzigna, Aredio9 Aug 19450640Guantanamo9 Aug 19451421Guantanamo28Exercises with American vessels.

Galzigna, Aredio10 Aug 19450638Guantanamo10 Aug 19451454Guantanamo25Exercises with American vessels.

Galzigna, Aredio11 Aug 19450635Guantanamo11 Aug 19451452Guantanamo26Exercises with American vessels.

Galzigna, Aredio17 Aug 19450617Guantanamo17 Aug 19451343Guantanamo29Exercises with American vessels.

Galzigna, Aredio22 Aug 19450632Guantanamo22 Aug 19451523Guantanamo26Exercises with American vessels.

Galzigna, Aredio21 Sep 19450754Guantanamo21 Sep 19451425Guantanamo19Trials.

Galzigna, Aredio24 Sep 19451304Guantanamo30 Sep 19450837Guantanamo1024Passage 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, Aredio5 Oct 19451350Bermuda16 Oct 19450823San Miguel (Azores)2059Passage 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, Aredio21 Oct 19451219San Miguel (Azores)26 Oct 19450814Gibraltar977Passage San Miguel (Azores)-Gibraltar.

Galzigna, Aredio28 Oct 19451330Gibraltar3 Nov 19451022Taranto1320Passage 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.

305 entries. 296 total patrol entries (29 marked as war patrols) and 35 events.

All Italian submarines