Italian submarines in World War Two


Otaria (OA, I.25)
Otaria

TypeOcean going 
ClassGlauco (9) 
Laid down 19 Nov 1932 Cantieri Riuniti dell'Adriatico, Monfalcone
Launched20 Mar 1935
Commissioned20 Oct 1935
End service
Stricken1 Feb 1948
Loss date
Loss position
History Stricken on 1st February 1948.
Fate

Commands

CommanderDate fromDate toCommand
C.C. Giuseppe Vocaturo16 Jan 19397 Sep 1941
C.C. Alfredo Musotto7 Sep 194115 Nov 1941
C.C. Alfredo Musotto7 Sep 194115 Nov 1941
T.V. Alberto Gorini15 Nov 194129 Nov 1941
C.C. Emilio Berengan29 Nov 19419 Jun 1942
T.V. Alberto Gorini10 Jun 19424 Sep 1942
T.V. Giovanni Manunta20 Aug 194221 Aug 1942
T.V. Alberto Gorini22 Aug 19424 Sep 1942
C.F. Emilio Francardi5 Sep 194230 Oct 1942
C.C. Giuseppe Caito30 Oct 194216 Nov 1942
S.T.V. Bruno Gabbrielli17 Nov 194221 Nov 1942
T.V. Mario Violante22 Nov 194224 Feb 1943
T.V. Alberto Galeazzi25 Feb 194312 Apr 1943
S.T.V. Odoardo Burattini13 Apr 194314 Apr 1943
C.C. Teucle Meneghini15 Apr 19438 Sep 1943
T.V. Giovanni Febbraro9 Sep 194331 Aug 1945

Patrols and events

 CommanderDateTimePortArr. dateArr. timeArr. portMilesDescription
Vocaturo, Giuseppe10 Jun 1940Pola10 Jun 1940PolaRefit at Pola.

Vocaturo, Giuseppe30 Jun 19400605Pola30 Jun 19401710Pola72Exercises.

Vocaturo, Giuseppe9 Jul 19400610Pola9 Jul 19401500Pola5,5Exercises.

Vocaturo, Giuseppe11 Jul 19400603Pola11 Jul 19401416Pola21,1Exercises.

Vocaturo, Giuseppe12 Jul 19400610Pola12 Jul 19401312Pola12,5Exercises.

Vocaturo, Giuseppe15 Jul 19400551Pola15 Jul 19400945Pola20,4Exercises.

Vocaturo, Giuseppe17 Jul 19400822Pola17 Jul 19401323Fiume69,5Passage Pola-Fiume.

Vocaturo, Giuseppe19 Jul 19400822Fiume19 Jul 19401323Pola69,5Passage Fiume-Pola.

Vocaturo, Giuseppe21 Jul 19400702Pola21 Jul 19401515Pola59,5Exercises.

Vocaturo, Giuseppe23 Jul 19401305Pola23 Jul 19401802Pola23,8Exercises.

Vocaturo, Giuseppe25 Jul 19401313Pola25 Jul 19401615Pola20,8Exercises.

Vocaturo, Giuseppe30 Jul 19401551Pola30 Jul 19401830Pola11,2Exercises.

Vocaturo, Giuseppe31 Jul 19400013Pola1 Aug 19401258Brindisi378,3Passage Pola-Brindisi.

Vocaturo, Giuseppe9 Aug 19401235Brindisi10 Aug 19401940Pola375Passage Brindisi-Pola.

Vocaturo, Giuseppe11 Aug 19401338Pola11 Aug 19401902Monfalcone76Passage Pola-Monfalcone.

Vocaturo, Giuseppe24 Aug 19400556Monfalcone24 Aug 19401205Pola77Passage Monfalcone-Pola.

Vocaturo, Giuseppe25 Aug 19401045Pola25 Aug 19401502Pola13,5Exercises.

Vocaturo, Giuseppe26 Aug 19400356Pola30 Aug 19401505La Spezia1225,4Passage Pola-La Spezia.

Vocaturo, Giuseppe5 Sep 19401340La Spezia5 Sep 19401748La Spezia25Exercises.

Vocaturo, Giuseppe18 Sep 19400718La Spezia18 Sep 19401212La Spezia27Exercises.

Vocaturo, Giuseppe18 Sep 19401353La Spezia18 Sep 19401753La Spezia20,1Exercises.

1Vocaturo, Giuseppe23 Sep 19400734La Spezia4 Oct 19401620RoyanPassage La Spezia-Bordeaux and patrolled on the 24°25'W meridian. Passed Gibraltar on 28th September 1940 and was met at 1400 hours on 4th October by two German minesweepers and escorted to Royan. Uneventful.

1bVocaturo, Giuseppe5 Oct 19400734Royan5 Oct 19401620PauillacPassage Royan-Pauillac.

1cVocaturo, Giuseppe6 Oct 19400636Pauillac6 Oct 19401045Bordeaux2186Passage Pauillac-Bordeaux.

2Vocaturo, Giuseppe14 Oct 19400713Bordeaux14 Oct 19401400Le VerdonPassage Bordeaux-Le Verdon.

2bVocaturo, Giuseppe14 Oct 19401900Le Verdon15 Nov 19401800Bordeaux3699,9Sailed with Barbarigo for patrol in the Atlantic between 55°20'N, 24°04 W, 55°20'N, 20°04'W and 53°00'N, 24°04'W. Then refit in Bordeaux.
  17 Oct 19401005
0950 (e)
47° 55'N, 11° 32'W
(e) 47° 37'N, 10° 52'W
An aircraft, identified as a Sunderland flying boat, was sighted from a distance of 2-3,000 metres on opposite course. This was indeed Sunderland 'D' (N.9050) of 10 Squadron (RAAF), piloted by Squadron Leader C.W. Pearce. At 0926 hours, it had sighted a submarine on the surface 10 miles away in position JBGQ 3706 (later information placed the attack at 47°37' N 10°52' W). Otaria made no attempt to submerge as the aircraft closed. On account of this strange behaviour, it was challenged and it replied with a rocket that emitted a large number of blue stars (and the blue signal was the correct reply for the period). The submarine still made no attempt to submerge although the aircraft was circling 1 mile away. The pilot was still doubtful as to whether he should attack it as even the guns' crews on the submarine were not closed up. Again submarine was challenged and this time the reply was in the nature of a signal emitting numerous yellow stars. (This was the correct colour for the next period). Again being challenged, the reply was the same (yellow stars).

Pearce decided to inspect it at closer quarters. As the aircraft flew over the submarine, it was met with a burst of machine gun fire from the conning tower. The Sunderland turned away before returning to attack the submarine. As the aircraft dived to the attack, Otaria submerged. At 0950 hours, a stick of four bombs was dropped 150 yards ahead of swirl of submarine. All that was seen as a result of the attack was that a minute later, a large florescence patch, 120 feet in diameter, came to the surface 100 yards to starboard of last observed track of submarine and bomb burst. The Sunderland remained in vicinity until 1016 hours when it flew away.
  30 Oct 19400802A vessel was sighted at 25,000 meters and when the submarine closed to 10,000 meters, it was identified as a tanker but contact was lost in heavy seas (Force 5-6).
  30 Oct 19401720
1730 GMT or 1830 (e)

(e) 54° 30'N, 23° 26'W
A vessel was sighted at a distance of 10,000 metres. When the submarine closed and to 6-7,000 meters, the vessel opened fire on the submarine with a small gun and made an enemy report. This was the British Baltrover (3,966 GRT, built 1913) on passage Liverpool to St. Johns (NFLD), she fired three rounds at the submarine. Otaria maneuvered to intercept after dark, but had difficulty in keeping contact in heavy weather. As water penetrated in the conning tower, the chase was abandoned.
  2 Nov 19400830A vessel was sighted at a distance of 11,000 metres. The submarine dived and went on an intercept course, but could not get closer than 4,000 metres, so the chase had to be abandoned.
  3 Nov 19401018
(0) Near Italian Grid 5506/25.
A vessel was sighted at a distance of 11,000 metres. and The submarine went on an intercept course and dived at 1207 hours, when range was down to 7,000 meters. Due to heavy seas, the vessel could not be seen though the periscope and the submarine surfaced again but contact was lost.
  3 Nov 19401900
(0) Italian Grid 5506/25.
A convoy of six or seven vessels, apparently unescorted, was observed steering 090°, 10 knots. This information comes solely from a signal from Otaria and is not mentioned by her patrol report. After surfacing, the submarine lost contact.
  5 Nov 1940002853° 55'N, 23° 27'WA 15-2000-ton steamer was sighted at 0020 hours from a distance of 4,000 metres. The submarine closed to about 500-700 metres and at 0028 hours turned to fire two stern shots (533mm, W G type), but missed.
  9 Nov 1940173053° 05'N, 17° 55'W
(0) Italian Grid 0315/16.
The submarine sighted an aircraft carrier escorted by three destroyers, at a distance of 20,000 metres, proceeding on a 360° course at 13 knots. Otaria could not close to attack but made an enemy report. Barbarigo and Marconi attempted to intercept.

Vocaturo, Giuseppe18 Jan 19410940Bordeaux18 Jan 19411520Le Verdon48,5Passage Bordeaux-Le Verdon and trials off Le Verdon, delayed because of defects.

Vocaturo, Giuseppe20 Jan 19410720Le Verdon20 Jan 19411250Le Verdon52Sailed for patrol, escorted by M-9 and M-6, but turned back because of battery defects and leaks. Her sailing had already been delayed by defects and bad weather (her escort could not sail).

Vocaturo, Giuseppe21 Jan 19411507Le Verdon21 Jan 19411830Le Verdon34Sailed for patrol escorted by M-6 and UJ-D but returned because the overload of fuel has affected her stability.

Vocaturo, Giuseppe22 Jan 19410850Le Verdon22 Jan 19411042Pauillac25Passage Le Verdon-Pauillac.

Vocaturo, Giuseppe23 Jan 19411115Pauillac23 Jan 19411403Le Verdon25Passage Pauillac-Le Verdon.

3Vocaturo, Giuseppe24 Jan 19411455Le Verdon1 Feb 19411314Pauillac1161Sailed, escorted by M-6 and M-12 for patrol between 56°00'N and 57°00'N and between 17°00'W and 21°00'W. Patrol cut short because of defects. Escorted on her return by M-6 and M-21.

3bVocaturo, Giuseppe2 Feb 19410937Pauillac2 Feb 19411150Bordeaux18,5Passage Pauillac-Bordeaux.

Vocaturo, Giuseppe6 Feb 19411300Bordeaux6 Feb 19411702Le Verdon48,5Passage Bordeaux-Le Verdon.

4Vocaturo, Giuseppe6 Feb 19411725Le Verdon2 Mar 19411155Pauillac3489,9Sailed with Marcello, escorted by M-9, M-21 and Sperrbrecher 16, for Atlantic patrol between 53°00'N and 54°00'N and 14°00'W and 17°00'W. Met on her return by M-10, M-13, M-25 and Sperrbrecher 34.
  19 Feb 1941The submarine was ordered (with Marcello, Barbarigo and Bianchi) to intercept a convoy reported in about 59° or 60° N, 11° W on a 270° course. Otaria was short of fuel and could not comply.
  19 Feb 19412311Otaria was ordered to intercept a damaged freighter in 53°55' N, 16°45' W. The submarine arrived in the area at 0320 hours on the 20th and searched until 1100 hours, without sighting anything.

4bVocaturo, Giuseppe3 Mar 19410810Pauillac3 Mar 19410956Bordeaux23,5Passage Pauillac-Bordeaux.

Vocaturo, Giuseppe4 May 19411230Bordeaux4 May 19411941Le Verdon62Passage Bordeaux-Le Verdon.

Vocaturo, Giuseppe5 May 19410730Le Verdon5 May 19411550La Pallice60Passage Le Verdon-La Pallice.

5Vocaturo, Giuseppe8 May 19411858La Pallice24 May 19411835Bordeaux3284Atlantic patrol between 58°00'N and 59°00'N, and between 25°00'W and 33°00'W.
  13 May 1941020049° 00'N, 17° 15'WAn Italian submarine was sighted but not identified.
  14 May 1941143053° 30'N, 24° 45'WA Motorship zigzagging on 120° course, 16 knots was sighted at a distance of 15,000 metres. The submarine very quickly lost sight of the vessel.
  15 May 1941090053° 12'N, 20° 25'WAn unidentified aircraft was seen forcing the submarine to dive.
  17 May 19411353The Italian submarine Morosini was encountered and they exchanged recognition signals.
  19 May 1941083051° 37'N, 22° 28'WOtaria sighted a convoy of about twenty-four merchant ships in three columns (two large ships but the remainder of about 2-3,000 tons), escorted by three destroyers and three corvettes, steering 060°, 8 knots at a distance of 18,000 metres. The submarine trailed it with the intention of attacking during the night. This would occur at 0420 hours on the 20th.
  19 May 1941221050° 12'N, 22° 53'WThe submarine sighted a biplane (Swordfish?) flying toward her. Otaria dived and heard three distant explosions.
  20 May 19410420
0438 (e)
51° 36'N, 20° 50'W
(e) 51° 45'N, 20° 45'W
(0) Italian Grid 6820/14.
A 12,000-ton steamer of NORFOLK class in convoy course 070° at 8 knots. This was British Starcross (4,662 GRT, built 1936) in convoy SL. 73, on a voyage from Lagos and Freetown to Hull. The convoy had first been sighted at 0830 hours on the 19th and Otaria had trailed it since, waiting for darkness to attack. At 0420 hours, two torpedoes (533mm) were fired from bow tubes at a range of 450 metres and claimed that both hit. In fact, the freighter had observed the first torpedo to miss but shortly after, the second torpedo struck the ship and she sank. The crew of forty was rescued by the destroyer HMCS St.Francis. The submarine had been seen to move on the opposite course of the convoy at 0415 hours by a lookout from the 12-pdr gun of HMCS St Francis. The submarine was observed to turn to the attack when she had reached a position at the rear of the convoy. The lookout tried to alert the bridge, by telephone, but the rating at the other end had just arrived for the change of the watch and had not yet put his earphones on. Thus the personnel on the bridge of St Francis were not informed before the torpedo hit.
  23 May 1941152045° 30'N, 7° 05'WTwo men in a lifeboat were seen and were rescued. These were survivors from the French Notre Dame Du Châtelet, sunk by U-43 (KL Wolfgang Lüth, the second highest ranking U-boat ace) on 15 May 1941.

6Vocaturo, Giuseppe11 Jul 19410908Bordeaux11 Jul 19411105Bordeaux20Sailed from Bordeaux, but returned because of defects.

6bVocaturo, Giuseppe11 Jul 19411852Bordeaux11 Jul 19412127Bordeaux23,5Carried out a test to verify that the defect had been eliminated.

6cVocaturo, Giuseppe12 Jul 19411003Bordeaux12 Jul 19411541Le Verdon48,5Passage Bordeaux-Le Verdon.

6dVocaturo, Giuseppe13 Jul 19412115Le Verdon19 Jul 19410945Le Verdon898,5Sailed for patrol northwest of Madeira within 15 miles of 34°22'N, 20°20'W, but turned back because of defects when off Cape Finisterre.

Vocaturo, Giuseppe19 Jul 19410945Le Verdon19 Jul 19411620BordeauxPassage Le Verdon-Bordeaux.

Vocaturo, Giuseppe16 Aug 19411400Bordeaux16 Aug 19411930Le Verdon63Passage Bordeaux-Le Verdon and trials off Le Verdon.

Vocaturo, Giuseppe17 Aug 19410720Le Verdon17 Aug 19411510La Pallice59,5Passage Le Verdon-La Pallice and exercises at Le Pertuis d'Antioche.

Vocaturo, Giuseppe20 Aug 19411444La Pallice20 Aug 19411930La Pallice4Trials.

7Vocaturo, Giuseppe21 Aug 19411835La Pallice27 Aug 19411303Bordeaux1242,5Sailed for Atlantic patrol near 45°00'N, 11°00'W. The patrol was cut short because C.V. Vocaturo was sick. The submarine turned back when off Cape Finisterre.

Vocaturo, Giuseppe27 Aug 19411905Bordeaux27 Aug 19412005Bordeaux0,5Changed moorings?

8Musotto, Alfredo7 Sep 19410820Bordeaux7 Sep 19411400Le VerdonPassage Bordeaux-Le Verdon and trials off Le Verdon.

8bMusotto, Alfredo7 Sep 19411400Le Verdon7 Sep 19412000La Pallice112Passage Le Verdon-La Pallice and trials at Le Pertuis d'Antioche. Escorted by V-414 and another patrol boat.

8cMusotto, Alfredo7 Sep 19412337La Pallice19 Sep 19411025Naples2483Passage La Pallice-Naples. Passed Gibraltar on 14th September 1941 [Note: C.C. Musotto replaced C.C. Vocaturo who was still sick]. Refit in Naples from 24th September to 4th November.
  12 Sep 19410632
0540-0555 (e)

(e) 36° 28'N, 9° 09'W
A submarine chaser or destroyer, was observed proceeding toward the submarine at 2,500 metres. This was HMS Vimy proceeding independently who attacked a contact with a full pattern. The submarine dived immediately to 90 meters; she heard depth-charges exploding less than 150 meters away, but escaped.
  12 Sep 19411010
0903 (e)

(e) 36° 28'N, 9° 09'W
HMS Vimy obtained another contact and attacked with fourteen depth-charges set at 100 to 225 feet. The submarine heard a depth-charge followed by six to eight more exploding less than 150 meters away but escaped.

Gorini, Alberto22 Nov 19410943Naples22 Nov 19411725Naples32,3Exercises. T.V. Pasquale Terra of the submarine Velella was on board as an observer.

Gorini, Alberto24 Nov 19410920Naples24 Nov 19411633Naples42,9Exercises.

Berengan, Emilio1 Dec 19411005Naples1 Dec 19411505Naples20Exercises.

Berengan, Emilio5 Dec 19411000Naples5 Dec 19411038Naples1,2Trials.

Berengan, Emilio6 Dec 19411000Naples6 Dec 19411530Naples22,3Exercises.

Berengan, Emilio9 Dec 19410913Naples9 Dec 19411320Naples24,7Exercises.

Berengan, Emilio11 Dec 19410900Naples11 Dec 19411228Naples19,7Exercises.

9Berengan, Emilio14 Dec 19411407Naples19 Dec 19411830BardiaSupply mission to Bardia (11.3 tons of food supplies) by coastal route via Cape Peloro (at 0945 hours on the 15th later corrected to 0730 hours) and Messina (0800 hours on the 15th) and Point S.1 (Capo Dell'Armi) then course 120°.
  16 Dec 19411025An enemy aircraft was seen and the submarine dived immediately.
  19 Dec 19410140
(0) 60 miles from Ras Azzaz.
An unknown vessel was sighted on opposite course. It was believed to be the submarine Dandolo but C.C. Berengan took no chance and took his submarine down.

9bBerengan, Emilio19 Dec 19412120Bardia24 Dec 19411512Taranto1873,8Return trip from supply mission to Bardia with fifteen PoWs and eight Italian soldiers.
  19 Dec 19410140
(0) 60 miles from Ras Azzaz.
An unknown vessel was sighted on opposite course. It was believed to be the submarine Dandolo but C.C. Berengan took no chance and took his submarine down.

Berengan, Emilio4 Jan 19420840Taranto4 Jan 19421325Taranto20Trials.

Berengan, Emilio6 Jan 19420855Taranto6 Jan 19421236Taranto1,2Trials.

Berengan, Emilio7 Jan 19420950Taranto9 Jan 19421105Pola519Passage Taranto-Pola.
  7 Jan 19421325
(0) 126° - Cape San Vito - 13 miles.
A derelict mine was observed but could not be destroyed because of the heavy seas.
  7 Jan 19421410An Italian convoy escorted by the torpedo boat Carini , was encountered. Actually, these were the freighter Ariosto, the tanker Nettuno screened by the torpedo boats Aretusa and Carini on passage from Brindisi to Taranto.
  7 Jan 19421740The submarine Rismondi was encountered.
  8 Jan 19421100An Italian steamer (this was the freighter Cesco) escorted by the torpedo-boat Missori were sighted.

Berengan, Emilio13 Jan 19421612Pola13 Jan 19422400Pola63Exercises with the submarine Ondina, escorted by San Giorgio and Jadera.

Berengan, Emilio15 Jan 19420825Pola15 Jan 19421710Pola54,5Exercises with the submarine Toti, escorted by the auxiliary Trau.

Berengan, Emilio16 Jan 19420815Pola16 Jan 19421830Pola64Exercises.

Berengan, Emilio22 Jan 19421408Pola23 Jan 19421227Pola115Exercises.

Berengan, Emilio27 Jan 19420832Pola27 Jan 19421656Pola54,5Exercises with the submarine Toti, escorted by the auxiliary Grado.

Berengan, Emilio28 Jan 19420832Pola28 Jan 19421708Pola59Exercises with the submarine Toti, escorted by the torpedo boat Insidioso and the auxiliary Grado.

Berengan, Emilio30 Jan 19420840Pola30 Jan 19421612Pola56,5Exercises.

Berengan, Emilio30 Jan 19421739Pola2 Feb 19422200Pola27,5Sailed to bring equipment to rescue men trapped in the submarine Medusa which had just been sunk by HMS Thorn. No survivors could be recovered.

Berengan, Emilio11 Feb 19420840Pola11 Feb 19421430Pola24,3Exercises.

Berengan, Emilio13 Feb 19420840Pola13 Feb 19421440Pola23,9Exercises.

Berengan, Emilio15 Feb 19420827Pola15 Feb 19421405Pola24,8Exercises.

Berengan, Emilio17 Feb 19420840Pola17 Feb 19421335Pola24Exercises.

Berengan, Emilio19 Feb 19421215Pola19 Feb 19421800Pola25,2Exercises.

Berengan, Emilio21 Feb 19421320Pola21 Feb 19421835Pola24,2Exercises.

Berengan, Emilio26 Mar 19421510Pola26 Mar 19421845Pola30Trials.

Berengan, Emilio1 Apr 19420815Pola1 Apr 19421440Pola28Exercises.

Berengan, Emilio2 Apr 19420705Pola2 Apr 19421628Pola102Exercises.

Berengan, Emilio9 Apr 19420815Pola9 Apr 19421415Pola29Exercises.

Berengan, Emilio10 Apr 19420907Pola10 Apr 19421723Pola8Exercises.

Berengan, Emilio16 Apr 19421956Pola20 Apr 19421550Messina867Passage to Pola-Messina, escorted first by the auxiliary Rovigno, then, in the last leg, by torpedo boat Abba. Exercised her 100/47 gun at 1013 hours on the 17th. Uneventful.

Berengan, Emilio24 Apr 19422150Messina26 Apr 19420800Cagliari357Passage Messina-Cagliari. Uneventful.

10Berengan, Emilio2 May 19422100Cagliari22 May 19420920Cagliari2180Patrolled off Algerian coast, south of Formentore and northwest of Cape Tenes, between 37°00'N and 37°40'N, and between 02°40'E and 03°00'E. On 17th May, was ordered to the SW and by 19th May was in 37°24'N, 01°19'E. Uneventful.

Gorini, Alberto11 Jun 19421620Cagliari11 Jun 19421910CagliariExercises.

11Gorini, Alberto12 Jun 19421420Cagliari18 Jun 19420815Cagliari584Patrolled in western Mediterranean in Grid 4060. On 14th June, she was ordered to Grid 5854, between 37°40'N and 38°00'N, and between 05°40'E and 06°00'E, on a patrol line with Bronzo, Giada, Acciaio and Uarsciek.
  13 Jun 19420833
0832 (e)

(e) 39° 17'N, 6° 02'E
The submarine sighted a Sunderland flying boat at a distance of 3,000 metres and opened fire with her machine guns. This was indeed Sunderland 'O' of 202 Squadron piloted by Squadron Leader R.B. Burrage and it dropped seven 250-lb depth-charges which straddled the submarine. The attack was repulsed but one crew member was seriously wounded in the leg by fragments from near-misses and the submarine submerged and escaped.
  16 Jun 19420510An unidentified ship was seen at a distance of 8,000 metres but drew away before the submarine could intercept.

12Gorini, Alberto22 Jun 19420557Cagliari23 Jun 19420030Cagliari179Sailed for patrol off Cape Blanc, but a defect prevented her from being able to use her radio underwater and she was ordered at 1500 hours on the 22nd to turn back.

Gorini, Alberto24 Jun 19421450Cagliari24 Jun 19421927Cagliari30Trials.

13Gorini, Alberto27 Jun 19420800Cagliari21 Jul 19420810Cagliari2114Patrolled in Western Mediterranean north of Cape Bengut between 37°00'N and 37°40'N, and between 03°40'E and 04°00'E. On 14th July, was moved to an area between 37°00'N and 37°20'N, and between 02°20'E and 02°40'E.
  15 Jul 1942102537° 04'N, 2° 27'EHydrophone effect on a 347° bearing were heard from a long distance. Otaria had been informed of a naval force sailing from Gibraltar. This was probably the presumed force, but at 1105 hours Otaria was informed that the enemy had reverted course and was returning to Gibraltar.
  17 Jul 1942141437° 00'N, 2° 30'E
(0) Approximately.
An unknown aircraft was sighted at a distance of 7,000 metres and the submarine dived.
  19 Jul 19421630-170037° 00'N, 2° 36'EH.E. on a 50° bearing was heard. Otaria had been informed at 1111 hours, of an enemy cruiser, sighted at 0920 hours on the 19th, some 200 miles east of her position on a westward course and she altered course at full speed. The presumed enemy vessel passed to the northward and at 1700 hours contact was lost.

14Gorini, Alberto11 Aug 19421759Cagliari15 Aug 19420950Cagliari399Patrolled north of Tunisia, between 37°20'N and 38°00'N, 09°20'E and 09°40'E, on a patrol line with Emo and Dandolo to intercept a convoy to Malta.
  12 Aug 19420533An unknown submarine was sighted to the west and Otaria turned away.
  12 Aug 1942162837° 46'N, 9° 30'EAn enemy squadron consisting of an aircraft carrier, several cruisers and destroyers was observed at 15-20,000 metres, but Otaria was unable to close and they disappeared over the horizon.
  12 Aug 1942204537° 44'N, 9° 30'ESteamers with escorts on westerly course were observed at a distance of 20,000 metres. Otaria could not close to attack. One of the escorts turned toward her and she submerged.
  14 Aug 1942193038° 06'N, 9° 42'EAn unknown ship was sighted on the horizon. The submarine attempted to close but was hampered by engine defects and the chase was abandoned.

Manunta, Giovanni20 Aug 19421957Cagliari21 Aug 19422052Naples273,5Passage Cagliari-Naples.

Gorini, Alberto22 Aug 1942Naples4 Sep 1942Naples399Refit in Naples. T.V. Gorini resumed command.

Francardi, Emilio5 Sep 1942Naples30 Oct 1942NaplesRefit in Naples. Change in command (from 1st April 1942, C.F. Emilio Francardi was head of GRUPSOM NAPOLI (2° Gruppo).

Caito, Giuseppe2 Nov 19420857Naples2 Nov 19421900Naples82,43Trials.

Caito, Giuseppe4 Nov 19420818Naples4 Nov 19421649Naples27Gyrocompass test.

Caito, Giuseppe6 Nov 19421516Naples8 Nov 19421555Taranto480Passage Naples-Taranto.

Caito, Giuseppe16 Nov 19421231Taranto16 Nov 19421610Taranto78,5Exercises.

Gabbrielli, Bruno17 Nov 1942Taranto21 Nov 1942TarantoAt Taranto. Change in command.

Violante, Mario29 Nov 19420721Taranto29 Nov 19421530Taranto36,5Trials.

15Violante, Mario1 Dec 19421105Taranto3 Dec 19420805Taranto263Supply mission to Tripoli with 25 tons of German ammunition, but turned back because of defects.

Violante, Mario21 Dec 19421132Taranto21 Dec 19421945Taranto43Exercises.

16Violante, Mario23 Dec 19421240Taranto27 Dec 19421215Tripoli727,1Supply mission to Tripoli (23.3 tons of Italian ammunition and 63 tons of lubricating oil).
  27 Dec 1942104432° 56'N, 13° 21'EA German aircraft came into view and exchanged recognition signals.

16bViolante, Mario27 Dec 19421820Tripoli30 Dec 19421550Taranto635Return trip from supply mission to Tripoli with ten PoWs [three officers and seven other ranks], one Italian officer and two carabinieri.
  27 Dec 1942104432° 56'N, 13° 21'EA German aircraft came into view and exchanged recognition signals.

17Violante, Mario12 Jan 19431143Taranto16 Jan 19431134Tripoli727,7Supply mission to Tripoli (22 tons of Italian ammunition).

17bViolante, Mario16 Jan 19431634Tripoli19 Jan 19431540Taranto621,3Return trip from supply mission to Tripoli. Brought back eight PoWs and four guards.

Violante, Mario2 Feb 19430839Taranto2 Feb 19431756Taranto40,5Exercises.

Violante, Mario9 Feb 19431612Taranto11 Feb 19432100Pola601,3Passage Taranto-Pola. Uneventful.

Violante, Mario14 Feb 19430710Pola14 Feb 19431200Pola21Exercises.

Violante, Mario17 Feb 19432332Pola18 Feb 19430614Fiume61Passage Pola-Fiume with the submarine Sirena and the torpedo boat Insidioso.

Galeazzi, Alberto26 Feb 19430845Fiume26 Feb 19432235Fiume43,5Exercises.

Galeazzi, Alberto27 Feb 19431252Fiume27 Feb 19432203Fiume37,2Exercises.

Galeazzi, Alberto2 Mar 19430928Fiume2 Mar 19432224Fiume50Exercises.

Galeazzi, Alberto4 Mar 19431013Fiume4 Mar 19432155Fiume48,5Exercises.

Galeazzi, Alberto6 Mar 19431020Fiume6 Mar 19432230Fiume57,5Exercises.

Galeazzi, Alberto9 Mar 19430947Fiume9 Mar 19432320Fiume65,6Exercises.

Galeazzi, Alberto11 Mar 19430958Fiume11 Mar 19432140Fiume57,5Exercises.

Galeazzi, Alberto13 Mar 19430910Fiume13 Mar 19432130Fiume60Exercises.

Galeazzi, Alberto15 Mar 19430759Fiume15 Mar 19431316Fiume27,6Exercises.

Galeazzi, Alberto16 Mar 19431035Fiume16 Mar 19432255Fiume56,5Exercises.

Galeazzi, Alberto18 Mar 19431055Fiume18 Mar 19432240Fiume54Exercises.

Galeazzi, Alberto20 Mar 19431120Fiume20 Mar 19432140Fiume51Exercises.

Galeazzi, Alberto23 Mar 19431310Fiume23 Mar 19432225Fiume32,5Exercises.

Galeazzi, Alberto30 Mar 19431018Fiume30 Mar 19431220Fiume15,3Exercises.

Galeazzi, Alberto30 Mar 19431627Fiume30 Mar 19432315Fiume47Exercises.

Galeazzi, Alberto1 Apr 19431245Fiume1 Apr 19432312Fiume55Exercises.

Galeazzi, Alberto3 Apr 19431015Fiume3 Apr 19432250Fiume57,8Exercises.

Galeazzi, Alberto6 Apr 19431135Fiume7 Apr 19432355Fiume67Exercises.

Galeazzi, Alberto8 Apr 19431243Fiume8 Apr 19432255Fiume58Exercises.

Galeazzi, Alberto10 Apr 19431002Fiume10 Apr 19431340Fiume19Exercises.

Galeazzi, Alberto10 Apr 19431502Fiume10 Apr 19432325Fiume55,5Exercises.

Burattini, Odoardo13 Apr 19431410Fiume13 Apr 19432316Fiume63Exercises.

Meneghini, Teucle15 Apr 19431420Fiume15 Apr 19432320Fiume62,5Exercises.

Meneghini, Teucle17 Apr 19431414Fiume17 Apr 19432000Fiume42Exercises.

Meneghini, Teucle20 Apr 19431306Fiume20 Apr 19432345Fiume60,5Exercises.

Meneghini, Teucle22 Apr 19431436Fiume22 Apr 19432312Fiume46,5Exercises.

Meneghini, Teucle26 Apr 19431158Fiume26 Apr 19431636Fiume26,5Exercises.

Meneghini, Teucle27 Apr 19431417Fiume28 Apr 19430030Fiume61,5Exercises.

Meneghini, Teucle29 Apr 19431408Fiume30 Apr 19430010Fiume60Exercises.

Meneghini, Teucle1 May 19431305Fiume2 May 19432353Fiume58Exercises.

Meneghini, Teucle4 May 19431402Fiume4 May 19432315Fiume50,5Exercises.

Meneghini, Teucle6 May 19431410Fiume6 May 19432340Fiume48Exercises.

Meneghini, Teucle8 May 19431410Fiume8 May 19432332Fiume56Exercises.

Meneghini, Teucle11 May 19431302Fiume12 May 19430118Fiume41,2Exercises.

Meneghini, Teucle13 May 19431330Fiume14 May 19430036Fiume40,5Exercises.

Meneghini, Teucle15 May 19431310Fiume16 May 19430030Fiume43,5Exercises.

Meneghini, Teucle16 May 19431000Fiume16 May 19431050Fiume2,5Exercises.

Meneghini, Teucle31 May 19431105Fiume31 May 19431150Fiume2,5Exercises.

Meneghini, Teucle1 Jun 19431243Fiume2 Jun 19430050Fiume13Exercises.

Meneghini, Teucle3 Jun 19431107Fiume3 Jun 19431622Fiume34,2Exercises.

Meneghini, Teucle4 Jun 19431015Fiume5 Jun 19431155Fiume52Exercises.

Meneghini, Teucle7 Jun 19431106Fiume8 Jun 19430234Fiume52Exercises.

Meneghini, Teucle9 Jun 19431000Fiume9 Jun 19431720Fiume8Exercises.

Meneghini, Teucle12 Jun 19431245Fiume13 Jun 19430215Fiume54Exercises.

Meneghini, Teucle14 Jun 19431200Fiume15 Jun 19430120Fiume62Exercises.

Meneghini, Teucle16 Jun 19431132Fiume17 Jun 19430135Fiume65Exercises.

Meneghini, Teucle18 Jun 19430700Fiume19 Jun 19430115Fiume67Exercises.

Meneghini, Teucle21 Jun 19430655Fiume22 Jun 19430142Fiume67,6Exercises.

Meneghini, Teucle23 Jun 19431222Fiume24 Jun 19430130Fiume70Exercises.

Meneghini, Teucle25 Jun 19431154Fiume26 Jun 19430120Fiume67,7Exercises.

Meneghini, Teucle28 Jun 19431115Fiume29 Jun 19430450Fiume64,8Exercises.

Meneghini, Teucle30 Jun 19431224Fiume1 Jul 19430120Fiume47,5Exercises.

Meneghini, Teucle2 Jul 19431225Fiume3 Jul 19430300Fiume67,5Exercises.

Meneghini, Teucle5 Jul 19431226Fiume6 Jul 19430050Fiume62Exercises.

Meneghini, Teucle7 Jul 19431245Fiume8 Jul 19430126Fiume61,2Exercises.

Meneghini, Teucle9 Jul 19431515Fiume10 Jul 19430045Fiume49,8Exercises.

Meneghini, Teucle10 Jul 19431116Fiume10 Jul 19431440Fiume18,2Exercises.

Meneghini, Teucle12 Jul 19431218Fiume12 Jul 19432415Fiume58,7Exercises.

Meneghini, Teucle14 Jul 19432232Fiume15 Jul 19430420Pola64Passage Fiume-Pola.

Meneghini, Teucle30 Jul 19430856Pola30 Jul 19431945Pola43,5Exercises.

Meneghini, Teucle30 Jul 19432234Pola31 Jul 19430420Fiume65Passage Pola-Fiume.

Meneghini, Teucle31 Jul 19431644Fiume31 Jul 19431852FiumeExercises.

Meneghini, Teucle31 Jul 19432115Fiume1 Aug 19430140Fiume42Exercises.

Meneghini, Teucle3 Aug 19431024Fiume4 Aug 19430040Fiume52Exercises.

Meneghini, Teucle4 Aug 19431012Fiume5 Aug 19430148Fiume72,6Exercises.

Meneghini, Teucle6 Aug 19431017Fiume7 Aug 19430130Fiume62,5Exercises.

Meneghini, Teucle7 Aug 19431245Fiume7 Aug 19431715Fiume19,9Exercises.

Meneghini, Teucle9 Aug 19431015Fiume10 Aug 19430030Fiume37,2Exercises.

Meneghini, Teucle11 Aug 19431030Fiume12 Aug 19430020Fiume41Exercises.

Meneghini, Teucle13 Aug 19430610Fiume14 Aug 19430235Fiume75Exercises.

Meneghini, Teucle14 Aug 19431240Fiume14 Aug 19431922Fiume13,8Exercises.

Meneghini, Teucle16 Aug 19431025Fiume17 Aug 19430350Fiume51,7Exercises.

Meneghini, Teucle18 Aug 19431025Fiume19 Aug 19430110Fiume34,7Exercises.

Meneghini, Teucle20 Aug 19430545Fiume21 Aug 19430100Fiume35,6Exercises.

Meneghini, Teucle23 Aug 19431424Fiume24 Aug 19430010Fiume22,8Exercises.

Meneghini, Teucle25 Aug 19431007Fiume26 Aug 19430004Fiume45Exercises.

Meneghini, Teucle27 Aug 19430724Fiume27 Aug 19431050Fiume48,3Exercises.

Meneghini, Teucle28 Aug 19431030Fiume28 Aug 19431525Fiume15Exercises.

Meneghini, Teucle30 Aug 19431012Fiume30 Aug 19431535Fiume51,4Exercises.

Meneghini, Teucle1 Sep 19431030Fiume2 Sep 19430200FiumeExercises.

Meneghini, Teucle3 Sep 19431030Fiume4 Sep 19430010FiumeExercises.

Meneghini, Teucle6 Sep 19430830Fiume7 Sep 19430005FiumeExercises.

Febbraro, Giovanni9 Sep 19431815Fiume12 Sep 19431245Taranto556Passage Fiume-Taranto.

Febbraro, Giovanni11 Oct 19431500Naples11 Oct 19431620Castellammare di Stabia11,3Passage Naples-Castellammare di Stabia.

Febbraro, Giovanni17 Nov 19431330Castellammare di Stabia18 Nov 19431630Augusta240Passage Naples-Augusta with the submarine Mameli and convoy NV 8B.

Febbraro, Giovanni19 Nov 19430630Augusta20 Nov 19431700Taranto295Passage Augusta-Taranto for refit.

Febbraro, Giovanni22 Nov 19430720Taranto22 Nov 19431335Taranto27,2Exercises.

Febbraro, Giovanni27 Nov 19430630Taranto27 Nov 19431500Taranto23,3Exercises.

Febbraro, Giovanni1 Dec 19430635Taranto1 Dec 19431252Taranto29,3Exercises.

Febbraro, Giovanni2 Dec 19430710Taranto2 Dec 19431352Taranto26,3Exercises.

Febbraro, Giovanni9 Dec 19430645Taranto9 Dec 19431535Taranto30,4Exercises with one British and one Polish destroyer.

Febbraro, Giovanni15 Dec 19430642Taranto15 Dec 19431425Taranto18,6Exercises with the corvettes Gabbiano and Pellicano.

Febbraro, Giovanni21 Dec 1943?Taranto21 Dec 1943?TarantoAccording to the torpedo boat Ardimentoso, she carried out exercises with Otaria on that date, but this is not confirmed by the "Specchio" (Movement table) of the submarine.

Febbraro, Giovanni17 Jan 19440831Taranto17 Jan 19441700Taranto49,8Exercises.

Febbraro, Giovanni21 Jan 19440810Taranto21 Jan 19441700Taranto45,9Exercises with the torpedo boat Abba.

Febbraro, Giovanni24 Jan 19440830Taranto24 Jan 19441650Taranto33,7Exercises.

Febbraro, Giovanni25 Jan 19440708Taranto25 Jan 19441637Taranto35,9Exercises.

Febbraro, Giovanni31 Jan 19440820Taranto31 Jan 19441638Taranto18,3Exercises with the torpedo boat Abba and the submarine Settimo.

Febbraro, Giovanni3 Feb 19440635Taranto3 Feb 19441351Taranto22,2Exercises.

Febbraro, Giovanni8 Feb 19440711Taranto8 Feb 19441525Taranto28,6Exercises.

Febbraro, Giovanni14 Feb 19440800Taranto14 Feb 19441735Taranto40,5Exercises.

Febbraro, Giovanni15 Feb 19440630Taranto15 Feb 19441605Taranto44,5Exercises.

Febbraro, Giovanni21 Feb 19440815Taranto21 Feb 19441700Taranto34,3Exercises with the torpedo boat Abba.

Febbraro, Giovanni28 Feb 19440646Taranto28 Feb 19440800Taranto7,5Sailed for exercises but recalled at 0715 hours.

Febbraro, Giovanni1 Mar 19440635Taranto1 Mar 19441226Taranto29,5Exercises.

Febbraro, Giovanni3 Mar 19440803Taranto3 Mar 19441700Taranto36,9Exercises.

Febbraro, Giovanni7 Mar 19440645Taranto7 Mar 19441522Taranto26,5Exercises.

Febbraro, Giovanni10 Mar 19440809Taranto10 Mar 19441654Taranto34,5Exercises.

Febbraro, Giovanni15 Mar 19440845Taranto15 Mar 19441305Taranto2Exercises.

Febbraro, Giovanni16 Mar 19440800Taranto16 Mar 19440855Taranto2,3Exercises. Early return due to bad weather.

Febbraro, Giovanni18 Mar 19440730Taranto18 Mar 19441530Taranto34,8Exercises.

Febbraro, Giovanni20 Mar 19440705Taranto20 Mar 19441250Taranto22,8Exercises with torpedo boat Indomito.

Febbraro, Giovanni22 Mar 19440650Taranto22 Mar 19441300Taranto20,7Exercises.

Febbraro, Giovanni24 Mar 19441602Taranto26 Mar 19440942Augusta298Passage Taranto-Augusta with convoy HA.32, escorted by the torpedo boats Calliope, Indomito and Libra and corvettes Flore and Pomona.

Febbraro, Giovanni29 Mar 19440710Augusta29 Mar 19441535Augusta33Exercises.

Febbraro, Giovanni31 Mar 19440604Augusta31 Mar 19441325Augusta35,1Exercises.

Febbraro, Giovanni4 Apr 19440900Augusta4 Apr 19441952Augusta44,7Exercises.

Febbraro, Giovanni8 Apr 19440743Augusta8 Apr 19441418Augusta29,5Exercises.

Febbraro, Giovanni14 Apr 19440850Augusta14 Apr 19441550Augusta31Exercises.

Febbraro, Giovanni16 Apr 19440830Augusta16 Apr 19441840Augusta32Exercises.

Febbraro, Giovanni18 Apr 19440700Augusta18 Apr 19441413Augusta37,7Exercises.

Febbraro, Giovanni20 Apr 19440805Augusta20 Apr 19441430Augusta33,6Exercises.

Febbraro, Giovanni26 Apr 19440700Augusta26 Apr 19441337Augusta28Exercises.

Febbraro, Giovanni28 Apr 19440720Augusta28 Apr 19441430Augusta34Exercises.

Febbraro, Giovanni23 May 19440800Augusta23 May 19441507Augusta36,5Exercises.

Febbraro, Giovanni28 May 19440800Augusta28 May 19441407Augusta31,5Exercises.

Febbraro, Giovanni31 May 19440900Augusta31 May 19441215AugustaRefuelled.

Febbraro, Giovanni1 Jun 19440725Augusta1 Jun 19441410Augusta30,2Exercises.

Febbraro, Giovanni26 Jun 19440730Augusta26 Jun 19441507Augusta22,7Exercises.

Febbraro, Giovanni12 Jul 19441950Augusta13 Jul 19440818Malta94Passage Augusta-Malta, escorted by British warship.

Febbraro, Giovanni15 Jul 19440840Malta15 Jul 19441800Malta42,8Exercises.

Febbraro, Giovanni23 Jul 19440828Malta23 Jul 19441855Malta56,3Exercises.

Febbraro, Giovanni24 Jul 19440830Malta24 Jul 19441655Malta49,1Exercises.

Febbraro, Giovanni27 Jul 19440855Malta28 Jul 19440030Malta68,5Exercises.

Febbraro, Giovanni29 Jul 19441150Malta29 Jul 19441725Malta37,6Exercises.

Febbraro, Giovanni30 Jul 19440745Malta30 Jul 19441905Malta52,3Exercises with the destroyers USS Niblack (DD-424) and USS Hilary P. Jones (DD-427).

Febbraro, Giovanni31 Jul 19440812Malta31 Jul 19441655Malta44,3Exercises.

Febbraro, Giovanni3 Aug 19440723Malta3 Aug 19441545Malta38,4Exercises.

Febbraro, Giovanni4 Aug 19440819Malta4 Aug 19441825Malta38,5Exercises.

Febbraro, Giovanni5 Aug 19440800Malta5 Aug 19441830Malta40,5Exercises.

Febbraro, Giovanni9 Aug 19442000Malta10 Aug 19441035Augusta112Passage Malta-Augusta with the torpedo boat Abba towing the submarine H.4. The other two continued to Taranto.

Febbraro, Giovanni16 Aug 19440700Augusta17 Aug 19441350Naples242,7Passage Augusta-Naples with Gabbiano, Driade, Sirio, Folaga and Allied convoy. Then long refit.

Febbraro, Giovanni1 Jan 1945Naples2 Mar 1945NaplesLong refit in Naples.

Febbraro, Giovanni3 Mar 19450920Naples3 Mar 19451615Naples26Exercises.

Febbraro, Giovanni23 Mar 19450903Naples23 Mar 19451435Naples26Exercises.

Febbraro, Giovanni3 Apr 19450910Naples3 Apr 19451445Naples6Gyrocompass tests.

Febbraro, Giovanni5 Apr 19450915Naples5 Apr 19451413Naples2Gyrocompass tests.

Febbraro, Giovanni6 Apr 19450920Naples6 Apr 19451458Naples27Trials.

Febbraro, Giovanni15 Apr 19450903Naples15 Apr 19451310Naples22Trials.

Febbraro, Giovanni18 Apr 19451859Naples20 Apr 19450820Taranto418Passage Naples-Taranto.

Febbraro, Giovanni23 Apr 19451325Taranto23 Apr 19451903Taranto40Exercises.

Febbraro, Giovanni30 Apr 19450820Taranto30 Apr 19451920Taranto69Exercises.

Febbraro, Giovanni4 May 19450600Taranto4 May 19451325Taranto44,9Exercises.

Febbraro, Giovanni5 May 19451500Taranto5 May 19451945Taranto38,5Exercises.

Febbraro, Giovanni8 May 19451018Taranto8 May 19451956Taranto55Exercises with the destroyer escorts USS Jacob Jones (DE-130), USS Roy O. Hale (DE-336) and USS Dale W. Peterson (DE-337).

Febbraro, Giovanni11 May 19450804Taranto11 May 19451612Taranto40Exercises.

Febbraro, Giovanni14 May 19450808Taranto14 May 19451655Taranto42Exercises.

Febbraro, Giovanni16 May 19450735Taranto16 May 19451730Taranto54,3Exercises.

Febbraro, Giovanni21 May 19450740Taranto21 May 19451705Taranto60Exercises.

Febbraro, Giovanni30 May 19450850Taranto30 May 19451210Taranto20Exercises.

Febbraro, Giovanni2 Jun 19450738Taranto2 Jun 19451710Taranto85Exercises.

Febbraro, Giovanni4 Jun 19450805Taranto4 Jun 19451652Taranto39Exercises.

Febbraro, Giovanni8 Jun 19450801Taranto8 Jun 19451540Taranto36,5Exercises.

Febbraro, Giovanni13 Jun 19451433Taranto13 Jun 19452150Taranto53Exercises.

Febbraro, Giovanni15 Jun 19451334Taranto15 Jun 19452356Taranto52Exercises.

Febbraro, Giovanni18 Jun 19450804Taranto18 Jun 19451555Taranto42Exercises.

Febbraro, Giovanni11 Jul 19451443Taranto11 Jul 19452300Taranto45Exercises.

Febbraro, Giovanni13 Jul 19450824Taranto13 Jul 19451700Taranto50Exercises.

Febbraro, Giovanni15 Jul 19451945Taranto16 Jul 19450300Taranto51Exercises.

Febbraro, Giovanni18 Jul 19451130Taranto18 Jul 19451600Taranto32Exercises.

Febbraro, Giovanni20 Jul 19450357Taranto20 Jul 19450845Taranto47Exercises.

Febbraro, Giovanni21 Jul 19450817Taranto21 Jul 19451520Taranto66Exercises.

Febbraro, Giovanni24 Jul 19450823Taranto24 Jul 19451535Taranto62Exercises.

Febbraro, Giovanni26 Jul 19450840Taranto26 Jul 19451555Taranto39Exercises. Then at Taranto until the end of the war.

311 entries. 285 total patrol entries (17 marked as war patrols) and 38 events.

Events

GH 09.03.2021: This table kept here until we make fix the possible missing events in table above

CommanderDateTimePositionDescription
Giuseppe Vocaturo17 Oct 19401005
0950 (e)
47.55 N, 11.32 W
(e) 47.37 N, 10.52 W
An aircraft, identified as a Sunderland flying boat, was sighted from a distance of 2-3,000 metres on opposite course. This was indeed Sunderland 'D' (N.9050) of 10 Squadron (RAAF), piloted by Squadron Leader C.W. Pearce. At 0926 hours, it had sighted a submarine on the surface 10 miles away in position JBGQ 3706 (later information placed the attack at 47°37' N 10°52' W). Otaria made no attempt to submerge as the aircraft closed. On account of this strange behaviour, it was challenged and it replied with a rocket that emitted a large number of blue stars (and the blue signal was the correct reply for the period). The submarine still made no attempt to submerge although the aircraft was circling 1 mile away. The pilot was still doubtful as to whether he should attack it as even the guns' crews on the submarine were not closed up. Again submarine was challenged and this time the reply was in the nature of a signal emitting numerous yellow stars. (This was the correct colour for the next period). Again being challenged, the reply was the same (yellow stars).

Pearce decided to inspect it at closer quarters. As the aircraft flew over the submarine, it was met with a burst of machine gun fire from the conning tower. The Sunderland turned away before returning to attack the submarine. As the aircraft dived to the attack, Otaria submerged. At 0950 hours, a stick of four bombs was dropped 150 yards ahead of swirl of submarine. All that was seen as a result of the attack was that a minute later, a large florescence patch, 120 feet in diameter, came to the surface 100 yards to starboard of last observed track of submarine and bomb burst. The Sunderland remained in vicinity until 1016 hours when it flew away.
Giuseppe Vocaturo30 Oct 19400802A vessel was sighted at 25,000 meters and when the submarine closed to 10,000 meters, it was identified as a tanker but contact was lost in heavy seas (Force 5-6).
Giuseppe Vocaturo30 Oct 19401720
1730 GMT or 1830 (e)
(e) 54.30 N, 23.26 W
A vessel was sighted at a distance of 10,000 metres. When the submarine closed and to 6-7,000 meters, the vessel opened fire on the submarine with a small gun and made an enemy report. This was the British Baltrover (3,966 GRT, built 1913) on passage Liverpool to St. Johns (NFLD), she fired three rounds at the submarine. Otaria maneuvered to intercept after dark, but had difficulty in keeping contact in heavy weather. As water penetrated in the conning tower, the chase was abandoned.
Giuseppe Vocaturo2 Nov 19400830A vessel was sighted at a distance of 11,000 metres. The submarine dived and went on an intercept course, but could not get closer than 4,000 metres, so the chase had to be abandoned.
Giuseppe Vocaturo3 Nov 19401018(o) Near Italian Grid 5506/25.A vessel was sighted at a distance of 11,000 metres. and The submarine went on an intercept course and dived at 1207 hours, when range was down to 7,000 meters. Due to heavy seas, the vessel could not be seen though the periscope and the submarine surfaced again but contact was lost.
Giuseppe Vocaturo3 Nov 19401900(o) Italian Grid 5506/25.A convoy of six or seven vessels, apparently unescorted, was observed steering 090°, 10 knots. This information comes solely from a signal from Otaria and is not mentioned by her patrol report. After surfacing, the submarine lost contact.
Giuseppe Vocaturo5 Nov 1940002853.55 N, 23.27 W
A 15-2000-ton steamer was sighted at 0020 hours from a distance of 4,000 metres. The submarine closed to about 500-700 metres and at 0028 hours turned to fire two stern shots (533mm, W G type), but missed.
Giuseppe Vocaturo9 Nov 1940173053.05 N, 17.55 W
(o) Italian Grid 0315/16.
The submarine sighted an aircraft carrier escorted by three destroyers, at a distance of 20,000 metres, proceeding on a 360° course at 13 knots. Otaria could not close to attack but made an enemy report. Barbarigo and Marconi attempted to intercept.
Giuseppe Vocaturo19 Feb 1941The submarine was ordered (with Marcello, Barbarigo and Bianchi) to intercept a convoy reported in about 59° or 60° N, 11° W on a 270° course. Otaria was short of fuel and could not comply.
Giuseppe Vocaturo19 Feb 19412311Otaria was ordered to intercept a damaged freighter in 53°55' N, 16°45' W. The submarine arrived in the area at 0320 hours on the 20th and searched until 1100 hours, without sighting anything.
Giuseppe Vocaturo13 May 1941020049.00 N, 17.15 W
An Italian submarine was sighted but not identified.
Giuseppe Vocaturo14 May 1941143053.30 N, 24.45 W
A Motorship zigzagging on 120° course, 16 knots was sighted at a distance of 15,000 metres. The submarine very quickly lost sight of the vessel.
Giuseppe Vocaturo15 May 1941090053.12 N, 20.25 W
An unidentified aircraft was seen forcing the submarine to dive.
Giuseppe Vocaturo17 May 19411353The Italian submarine Morosini was encountered and they exchanged recognition signals.
Giuseppe Vocaturo19 May 1941083051.37 N, 22.28 W
Otaria sighted a convoy of about twenty-four merchant ships in three columns (two large ships but the remainder of about 2-3,000 tons), escorted by three destroyers and three corvettes, steering 060°, 8 knots at a distance of 18,000 metres. The submarine trailed it with the intention of attacking during the night. This would occur at 0420 hours on the 20th.
Giuseppe Vocaturo19 May 1941221050.12 N, 22.53 W
The submarine sighted a biplane (Swordfish?) flying toward her. Otaria dived and heard three distant explosions.
Giuseppe Vocaturo20 May 19410420
0438 (e)
51.36 N, 20.50 W
(e) 51.45 N, 20.45 W
(o) Italian Grid 6820/14.
A 12,000-ton steamer of NORFOLK class in convoy course 070° at 8 knots. This was British Starcross (4,662 GRT, built 1936) in convoy SL. 73, on a voyage from Lagos and Freetown to Hull. The convoy had first been sighted at 0830 hours on the 19th and Otaria had trailed it since, waiting for darkness to attack. At 0420 hours, two torpedoes (533mm) were fired from bow tubes at a range of 450 metres and claimed that both hit. In fact, the freighter had observed the first torpedo to miss but shortly after, the second torpedo struck the ship and she sank. The crew of forty was rescued by the destroyer HMCS St.Francis. The submarine had been seen to move on the opposite course of the convoy at 0415 hours by a lookout from the 12-pdr gun of HMCS St Francis. The submarine was observed to turn to the attack when she had reached a position at the rear of the convoy. The lookout tried to alert the bridge, by telephone, but the rating at the other end had just arrived for the change of the watch and had not yet put his earphones on. Thus the personnel on the bridge of St Francis were not informed before the torpedo hit.
Giuseppe Vocaturo23 May 1941152045.30 N, 07.05 W
Two men in a lifeboat were seen and were rescued. These were survivors from the French Notre Dame Du Châtelet, sunk by U-43 (KL Wolfgang Lüth, the second highest ranking U-boat ace) on 15 May 1941.
Alfredo Musotto12 Sep 19410632
0540-0555 (e)
(e) 36.28 N, 09.09 W
A submarine chaser or destroyer, was observed proceeding toward the submarine at 2,500 metres. This was HMS Vimy proceeding independently who attacked a contact with a full pattern. The submarine dived immediately to 90 meters; she heard depth-charges exploding less than 150 meters away, but escaped.
Alfredo Musotto12 Sep 19411010
0903 (e)
(e) 36.28 N, 09.09 W
HMS Vimy obtained another contact and attacked with fourteen depth-charges set at 100 to 225 feet. The submarine heard a depth-charge followed by six to eight more exploding less than 150 meters away but escaped.
Emilio Berengan16 Dec 19411025An enemy aircraft was seen and the submarine dived immediately.
Emilio Berengan19 Dec 19410140(o) 60 miles from Ras Azzaz.An unknown vessel was sighted on opposite course. It was believed to be the submarine Dandolo but C.C. Berengan took no chance and took his submarine down.
Emilio Berengan7 Jan 19421325(o) 126° - Cape San Vito - 13 miles.A derelict mine was observed but could not be destroyed because of the heavy seas.
Emilio Berengan7 Jan 19421410An Italian convoy escorted by the torpedo boat Carini , was encountered. Actually, these were the freighter Ariosto, the tanker Nettuno screened by the torpedo boats Aretusa and Carini on passage from Brindisi to Taranto.
Emilio Berengan7 Jan 19421740The submarine Rismondi was encountered.
Emilio Berengan8 Jan 19421100An Italian steamer (this was the freighter Cesco) escorted by the torpedo-boat Missori were sighted.
Alberto Gorini13 Jun 19420833
0832 (e)
(e) 39.17 N, 06.02 E
The submarine sighted a Sunderland flying boat at a distance of 3,000 metres and opened fire with her machine guns. This was indeed Sunderland 'O' of 202 Squadron piloted by Squadron Leader R.B. Burrage and it dropped seven 250-lb depth-charges which straddled the submarine. The attack was repulsed but one crew member was seriously wounded in the leg by fragments from near-misses and the submarine submerged and escaped.
Alberto Gorini16 Jun 19420510An unidentified ship was seen at a distance of 8,000 metres but drew away before the submarine could intercept.
Alberto Gorini15 Jul 1942102537.04 N, 02.27 E
Hydrophone effect on a 347° bearing were heard from a long distance. Otaria had been informed of a naval force sailing from Gibraltar. This was probably the presumed force, but at 1105 hours Otaria was informed that the enemy had reverted course and was returning to Gibraltar.
Alberto Gorini17 Jul 1942141437.00 N, 02.30 E
(o) Approximately.
An unknown aircraft was sighted at a distance of 7,000 metres and the submarine dived.
Alberto Gorini19 Jul 19421630-170037.00 N, 02.36 E
H.E. on a 50° bearing was heard. Otaria had been informed at 1111 hours, of an enemy cruiser, sighted at 0920 hours on the 19th, some 200 miles east of her position on a westward course and she altered course at full speed. The presumed enemy vessel passed to the northward and at 1700 hours contact was lost.
Alberto Gorini12 Aug 19420533An unknown submarine was sighted to the west and Otaria turned away.
Alberto Gorini12 Aug 1942162837.46 N, 09.30 E
An enemy squadron consisting of an aircraft carrier, several cruisers and destroyers was observed at 15-20,000 metres, but Otaria was unable to close and they disappeared over the horizon.
Alberto Gorini12 Aug 1942204537.44 N, 09.30 E
Steamers with escorts on westerly course were observed at a distance of 20,000 metres. Otaria could not close to attack. One of the escorts turned toward her and she submerged.
Alberto Gorini14 Aug 1942193038.06 N, 09.42 E
An unknown ship was sighted on the horizon. The submarine attempted to close but was hampered by engine defects and the chase was abandoned.
Giuseppe Caito27 Dec 1942104432.56 N, 13.21 E
A German aircraft came into view and exchanged recognition signals.

All Italian submarines