Italian submarines in World War Two

Enrico Toti (TO)

TypeOcean going 
ClassBalilla (1) 
Laid down 26 Jan 1925 Odero-Terni-Orlando, Muggiano
Launched14 Apr 1928
Commissioned19 Sep 1928
End service1 May 1943
Loss date
Loss position
History Hulked on 1st May 1943.


CommanderDate fromDate toCommand notes
C.C. Giovanni Onnis31 May 194021 Aug 1940
C.C. Bandino Bandini21 Aug 194015 Nov 1940
T.V. Giovanni Cunsolo22 Oct 19402 Feb 1941
T.V. Ugo Gentili3 Feb 19418 Mar 1941
C.F. Cristiano Masi9 Mar 194127 May 1941
C.C. Riccardo Boris27 May 194131 Jan 1942
C.C. Mario Resio31 Jan 194214 Mar 1942
C.C. Amedeo Stinchi20 May 194218 Aug 1942
T.V. Giovanni Celeste17 Aug 194220 Jan 1943
C.F. Riccardo Boris21 Jan 194311 Feb 1943
T.V. Ugo Gentili4 Mar 194330 Apr 1943

Ships hit

DateCommanderShip hitTypeGRTNat.Loss type
1.15 Oct 1940C.C. Bandino BandiniHMS TriadSubmarine1,090BritishSunk

Patrols and events

 CommanderDateTimePortArr. dateArr. timeArr. portMilesDescription
Onnis, Giovanni5 Jun 19400558Pola7 Jun 19401415Brindisi418Passage Pola-Brindisi.

1Onnis, Giovanni16 Jun 19401420Brindisi30 Jun 19401210Brindisi2212Patrolled in Gulf of Philippeville between 37°10'N and the Algerian coast and between Cape Bougaroni and Cape de Fer meridians.

2Onnis, Giovanni12 Jul 19401410Brindisi29 Jul 19401010Brindisi1700Patrolled within 20 miles from 33°40'N, 26°20'E on a line with Balilla.

Onnis, Giovanni31 Aug 19400845Brindisi31 Aug 19401315Brindisi21Exercises.

Bandini, Bandino3 Sep 19400800Brindisi3 Sep 19401231Brindisi30Exercises.

Bandini, Bandino5 Sep 19400914Brindisi5 Sep 19401400Brindisi22Exercises in 40°42'25'N, 17°54'45'E.

Bandini, Bandino10 Sep 19400810Brindisi10 Sep 19401330Brindisi21Exercises, escorted by the torpedo boat Pallade.

Bandini, Bandino12 Sep 19400812Brindisi12 Sep 19401222Brindisi21Exercises.

Bandini, Bandino22 Sep 19400800Brindisi22 Sep 19401243Brindisi25Exercises.

Bandini, Bandino28 Sep 19400808Brindisi28 Sep 19401150Brindisi18Exercises.

Bandini, Bandino4 Oct 19401405Brindisi4 Oct 19401805Brindisi20Exercises.

3Bandini, Bandino11 Oct 19401530Brindisi15 Oct 19401630Brindisi705Sailed for patrol in Ionian Sea, through (a) 37°20'N, 18°20'E (b) 33°10'N, 23°20'E to an area 10 miles wide between 33°35'N, 26°50'E and 34°20'N, 28°15'E. Returned after damage following sinking of HMS Triad.
  15 Oct 19400110+38° 16'N, 17° 37'E
(0) 197° - Cape Colonne (Calabria) - 50 miles.
In bad weather, a submarine of the PERSEUS class was observed at a distance of 2,000 metres. In fact, this was HMS Triad (Lt. Cdr. G.S. Salt, RN). Enrico Toti turned immediately to port, toward the enemy who had opened fire, hitting the Italian submarine on the conning tower. S.T.V. Giuseppe Simonetti and rating Marino Casellato were slightly wounded. HMS Triad fired a torpedo, which narrowly missed Enrico Toti astern. The Italian gunners rushed to the deck gun, but it was jammed; they frantically tried to arm it, as the enemy passed at full speed at only 30 metres from the port side. One 12-cm round was finally fired, but missed. In frustration, electrician Nicola Stagi threw his shoe at the enemy submarine! The Breda machine-guns and sub-machine guns swept the enemy's deck and shouts could distinctly be heard. At a distance of about 100-200 metres, the enemy submarine dived as Toti fired a second round from her 12-cm gun, which scored a direct hit, followed by a 533mm torpedo which apparently also hit the submerged submarine. About 30 metres of her bows broke surface vertically, before she disappeared. For good measure, one more 12-cm round was fired as well a second torpedo set at a depth of nine metres, although they appear to have missed. HMS Triad was the only British submarine to be sunk by an Italian counterpart, five officers and fifty ratings went down with her.

Bandini, Bandino21 Oct 19401008Brindisi22 Oct 19401400Pola385Passage Brindisi-Pola.

Cunsolo, Giovanni22 Oct 1940Pola2 Feb 1941PolaRefit at Pola.

Gentili, Ugo18 Feb 19410905Pola18 Feb 19411210Pola4Exercises.

Gentili, Ugo21 Feb 19410855Pola21 Feb 19411558Pola18Exercises.

Gentili, Ugo25 Feb 19410800Pola25 Feb 19411835Pola65Sailed with Bausan, escorted by the auxiliary San Giorgio. Hydrophone exercises with the torpedo boat Audace.

Gentili, Ugo26 Feb 19410902Pola26 Feb 19411640Pola12Exercises.

Gentili, Ugo1 Mar 19410822Pola1 Mar 19411658Pola49Exercises with Adua, Bragadino and Fisalia, escorted by the torpedo boat Audace and the auxiliary Jadera.

Gentili, Ugo5 Mar 19410830Pola5 Mar 19411831Pola70Exercises.

Gentili, Ugo6 Mar 19410905Pola7 Mar 19410010Pola160Sailed for exercises, escorted by the auxiliaries Jadera and Tenace.

Gentili, Ugo8 Mar 19410905Pola8 Mar 19411444Pola50Exercises.

Masi, Cristiano12 Mar 19410848Pola12 Mar 19412352Pola75Exercises, escorted by the torpedo boat Audace and the auxiliary Jadera.

Masi, Cristiano14 Mar 19410914Pola14 Mar 19412352Pola78Exercises.

Masi, Cristiano15 Mar 19410914Pola15 Mar 19411540Pola52,02Exercises.

Masi, Cristiano20 Mar 19410920Pola20 Mar 19411745Pola136Exercises.

Masi, Cristiano25 Mar 19410828Pola25 Mar 19411739Pola70Exercises.

Masi, Cristiano26 Mar 19410830Pola26 Mar 19411515Pola57Exercises.

Masi, Cristiano8 Apr 19410958Pola8 Apr 19411145Pola4Exercises.

Masi, Cristiano28 Apr 19410815Pola28 Apr 19411130Pola17Exercises, escorted by the auxiliary Jadera.

Masi, Cristiano6 May 19410744Pola6 May 19411852Pola68Exercises.

Masi, Cristiano9 May 19411032Pola10 May 19410200Pola114Exercises.

Masi, Cristiano10 May 19410808Pola10 May 19411840Pola69,5Exercises with the submarine Bausan, escorted by the auxiliary Morrhua.

Masi, Cristiano16 May 1941Pola16 May 1941Pola87Exercises with the submarine Pisani escorted by the auxiliary Morrhua in zone 2.

Masi, Cristiano17 May 19410800Pola17 May 19411815Pola87Exercises with the submarine Pisani escorted by the auxiliary Cilicia.

Masi, Cristiano19 May 19410912Pola19 May 19412310Pola67Exercises.

Masi, Cristiano21 May 19410801Pola21 May 19411813Pola61,5Exercises.

Masi, Cristiano24 May 19410750Pola24 May 19411745Pola73,5Exercises with the submarines Narvalo, Pisani, Speri and Bausan, escorted by the auxiliaries San Giorgio, Jadera and Morrhua.

Boris, Riccardo28 May 19410750Pola28 May 19411850Pola64Exercises.

Boris, Riccardo30 May 19411100Pola31 May 19410415Pola118,5Exercises.

Boris, Riccardo3 Jun 19410730Pola3 Jun 19411900Pola67,6Exercises.

Boris, Riccardo4 Jun 19410800Pola4 Jun 19411535Pola68Exercises.

Boris, Riccardo6 Jun 19410800Pola6 Jun 19411615Pola45Exercises.

Boris, Riccardo7 Jun 19410750Pola7 Jun 19411220Pola47,7Exercises.

Boris, Riccardo9 Jun 19411110Pola10 Jun 19410350Pola100,2Exercises.

Boris, Riccardo11 Jun 19410800Pola11 Jun 19411845Pola59,5Exercises.

Boris, Riccardo13 Jun 19410800Pola13 Jun 19411800Pola63Exercises.

Boris, Riccardo14 Jun 19410810Pola14 Jun 19411630Pola57Exercises.

Boris, Riccardo17 Jun 19411100Pola18 Jun 19410215Pola77Exercises, escorted by the auxiliary San Giorgio.

Boris, Riccardo19 Jun 19412100Pola20 Jun 19410235Pola56Exercises, escorted by the auxiliary Jadera.

Boris, Riccardo24 Jun 19410754Pola24 Jun 19411720Pola65Exercises.

Boris, Riccardo26 Jun 19410750Pola26 Jun 19411705Pola61,5Sailed with the submarine Pisani, escorted by Jadera, for exercises with the torpedo boat Audace.

Boris, Riccardo28 Jun 19410800Pola28 Jun 19411200Pola48,8Exercises, escorted by torpedo boat Audace and the auxiliary Principessa Mafalda.

Boris, Riccardo30 Jun 19411700Pola30 Jun 19411720Pola2Changed anchorage or docked?

Boris, Riccardo12 Jul 19410800Pola12 Jul 19411455Pola55,5Exercises.

Boris, Riccardo14 Jul 19410800Pola14 Jul 19411830Pola65Exercises.

Boris, Riccardo17 Jul 19411945Pola18 Jul 19410300Pola50Exercises.

Boris, Riccardo19 Jul 19410926Pola19 Jul 19411533Pola60,5Exercises, escorted by the auxiliary Jadera.

Boris, Riccardo22 Jul 19410805Pola22 Jul 19411745Pola70,8Exercises.

Boris, Riccardo24 Jul 19410800Pola24 Jul 19411630Pola54Exercises, escorted by the auxiliary Morrhua.

Boris, Riccardo26 Jul 19410808Pola26 Jul 19411310Pola46,3Exercises.

Boris, Riccardo6 Aug 19410800Pola6 Aug 19411726Pola65,5Exercises.

Boris, Riccardo8 Aug 19410800Pola8 Aug 19411736Pola55Exercises.

Boris, Riccardo9 Aug 19411950Pola10 Aug 19410113Pola58Exercises, escorted by the auxiliary Jadera.

Boris, Riccardo11 Aug 19410800Pola11 Aug 19411720Pola67,5Exercises.

Boris, Riccardo15 Aug 19410800Pola15 Aug 19411520Pola53Exercises.

Boris, Riccardo18 Aug 19410740Pola18 Aug 19411810Pola71,6Exercises.

Boris, Riccardo19 Aug 19410740Pola19 Aug 19411810Pola71,6Sailed with the submarines Jalea and Speri escorted by the auxiliaries San Giorgio and Salvore for torpedo firing exercises with the torpedo boat Insidioso.

Boris, Riccardo25 Aug 19410813Pola25 Aug 19411758Pola69,6Exercises.

Boris, Riccardo29 Aug 19410928Pola29 Aug 19411802Pola53Sailed with the submarine Maleli, escorted by the auxiliary Morrhua, for torpedo firing exercises against the torpedo boat Insidioso.

Boris, Riccardo1 Sep 19410829Pola1 Sep 19411800Pola56,7Exercises.

Boris, Riccardo2 Sep 19411035Pola3 Sep 19410025Pola78Exercises.

Boris, Riccardo7 Sep 19410530Pola7 Sep 19412210Pola190Exercises.

Boris, Riccardo11 Sep 19410740Pola11 Sep 19411755Pola55,5Exercises with the submarine Jalea, escorted by the auxiliary Salvore.

Boris, Riccardo12 Sep 19410740Pola12 Sep 19411800Pola57Exercises.

Boris, Riccardo15 Sep 19410800Pola15 Sep 19411810Pola59,5Exercises with the submarine Speri escorted by the auxiliary Morrhua.

Boris, Riccardo16 Sep 19410545Pola16 Sep 19412013Pola230Exercises.

Boris, Riccardo17 Sep 19410802Pola17 Sep 19411740Pola57Exercises escorted by the auxiliary Morrhua.

Boris, Riccardo20 Sep 19411000Pola20 Sep 19411215Pola21,5Exercises.

Boris, Riccardo22 Sep 19410814Pola22 Sep 19411734Pola37Exercises.

Boris, Riccardo24 Sep 19410820Pola24 Sep 19411640Pola63Exercises with the submarines Des Geneys, Bausan and Mameli, escorted by the auxiliaries Salvore and San Giorgio.

Boris, Riccardo29 Sep 19410800Pola29 Sep 19411730Pola57Exercises.

Boris, Riccardo1 Oct 19410800Pola1 Oct 19411630Pola70Exercises with the submarine Des Geneys, escorted by the auxiliary Morrhua and the torpedo boat Audace.

Boris, Riccardo3 Oct 19411045Pola4 Oct 19410105Pola92Exercises with the submarine Speri, escorted by the auxiliary Salvatore.

Boris, Riccardo7 Oct 19410940Pola7 Oct 19411630Pola51Exercises.

Boris, Riccardo8 Oct 19411000Pola8 Oct 19411733Pola54Exercises, escorted by the auxiliary Morrhua.

Boris, Riccardo10 Oct 19410815Pola10 Oct 19411705Pola56Exercises.

Boris, Riccardo14 Oct 19411315Pola15 Oct 19410050Pola48Exercises with the submarine Emo, escorted by the torpedo boat Audace.

Boris, Riccardo17 Oct 19411007Pola17 Oct 19411506Pola51,8Exercises with the submarine Speri, escorted by the auxiliary Morrhua.

Boris, Riccardo18 Oct 19410813Pola18 Oct 19411603Pola51Exercises with the submarine Emo, escorted by the auxiliary Morrhua.

Boris, Riccardo21 Oct 19410820Pola21 Oct 19411645Pola59,2Exercises with the submarine Speri, escorted by the auxiliary Morrhua.

Boris, Riccardo27 Oct 19410807Pola27 Oct 19411550Pola69Exercises, escorted by the torpedo boat Audace and the auxiliary Grado.

Boris, Riccardo29 Oct 19410806Pola29 Oct 19411645Pola57Exercises with the submarine Bausan, escorted by the auxiliary Morrhua.

Boris, Riccardo2 Nov 19411702Pola2 Nov 19412240Pola60Exercises with the submarines Rismondo and Galatea, escorted by the auxiliary Salvore.

Boris, Riccardo5 Nov 19410813Pola5 Nov 19411600Pola51Exercises, escorted by the auxiliaries San Giorgio and Grado.

Boris, Riccardo18 Nov 19410845Pola18 Nov 19411645Pola59Exercises with the submarines Des Geneys and Jalea, escorted by the auxiliaries Jadera and San Giorgio.

Boris, Riccardo24 Nov 19410819Pola24 Nov 19411710Pola61Exercises.

Boris, Riccardo26 Nov 19410820Pola26 Nov 19411600Pola59Exercises.

Boris, Riccardo29 Nov 19410810Pola29 Nov 19411620Pola54,5Exercises with submarines Pisani, Emo and Medusa, escorted by auxiliaries Jadera and Trau.

Boris, Riccardo1 Dec 19410815Pola1 Dec 19411710Pola59Exercises, escorted by the auxiliaries San Giorgio and Jadera.

Boris, Riccardo2 Dec 19410820Pola2 Dec 19411605Pola64Exercises, escorted by the auxiliaries Jadera and Trau.

Boris, Riccardo6 Dec 19410822Pola6 Dec 19411550Pola57Exercises with the submarines Bajamonti, Mameli, Speri and Des Geneys, escorted by the torpedo boat Audace and the auxiliaries Jadera, Trau and San Giorgio.

Boris, Riccardo10 Dec 19410820Pola10 Dec 19411720Pola56Exercises with the submarines Mameli, Emo and Pisani, escorted by the auxiliaries Jadera and San Giorgio.

Boris, Riccardo23 Dec 19410832Pola23 Dec 19411700Pola71Exercises, escorted by the auxiliary San Giorgio.

Boris, Riccardo26 Dec 19411606Pola27 Dec 19410150Pola48Exercises, escorted by the torpedo boat Insidioso.

Boris, Riccardo30 Dec 19410830Pola30 Dec 19411717Pola60,5Gunfire exercises with the submarines Speri and Medusa, escorted by the auxiliaries Jadera, Grado and Trau.

Boris, Riccardo2 Jan 19421640Pola2 Jan 19422350Pola70Torpedo firing exercises.

Boris, Riccardo4 Jan 19420845Pola4 Jan 19421656Pola60Exercises with the submarines Jalea, Des Geneys and Medusa, escorted by the auxiliaries Jadera and San Giorgio and the torpedo boat Audace.

Boris, Riccardo15 Jan 19420845Pola15 Jan 19421727Pola54Exercises with the submarine Otaria, escorted by the auxiliary Trau.

Boris, Riccardo19 Jan 19421503Pola19 Jan 19422240Pola67,7Exercises with the submarine Jalea, escorted by the auxiliary Grado, for night gunfire against Jadera then night torpedo firing against the torpedo boat Missori.

Boris, Riccardo23 Jan 19420904Pola23 Jan 19421150Pola30Exercises.

Boris, Riccardo27 Jan 19420837Pola27 Jan 19421611Pola53Exercises with the submarine Otaria, escorted by the auxiliary Grado.

Boris, Riccardo28 Jan 19420900Pola28 Jan 1942157Pola52Exercises with the submarine Otaria, escorted by the torpedo boat Insidioso and the auxiliary Grado.

Resio, Mario11 Feb 19420900Pola11 Feb 19421423Monfalcone65Passage Pola-Monfalcone.

Stinchi, Amedeo22 May 19420930Monfalcone22 May 19421645Monfalcone47Trials.

Stinchi, Amedeo27 May 19420836Monfalcone27 May 19421545Pola67Passage Monfalcone-Pola with the submarine Ascianghi.

Stinchi, Amedeo28 May 19420648Pola28 May 19422320Pola93Trials escorted by the auxiliary San Giorgio.

Stinchi, Amedeo29 May 19421130Pola29 May 19421350Pola4Trials.

Stinchi, Amedeo30 May 19421110Pola30 May 19421640Monfalcone67Passage Pola-Monfalcone.

Stinchi, Amedeo11 Jun 19420936Monfalcone11 Jun 19421825Monfalcone54,7Trials.

Stinchi, Amedeo18 Jun 19420940Monfalcone18 Jun 19421706Pola67Passage Monfalcone-Pola.

Stinchi, Amedeo22 Jun 19420909Pola23 Jun 19421740Brindisi369,4Passage Pola-Brindisi.

Stinchi, Amedeo24 Jun 19420010Brindisi24 Jun 19421325Taranto142,1Passage Brindisi-Taranto.

Stinchi, Amedeo26 Jun 19420830Taranto26 Jun 19421508Taranto?Gyrocompass tests.

Stinchi, Amedeo28 Jun 19421020Taranto28 Jun 19421715Taranto28,5Exercises.

Stinchi, Amedeo29 Jun 19421550Taranto29 Jun 19421742Taranto4,5Exercises.

4Stinchi, Amedeo30 Jun 19421125Taranto5 Jul 19422030Derna (harbour entrance)608Supply mission to Derna (61 tons of German petrol and 4.5 tons of foodstuff) but as she arrived there she was ordered to proceed to Ras Hilal. ULTRA sigint had learnt that Toti was used to transport stores to Derna, passing through 33°34'N, 22°29'E.
  3 Jul 19421425The submarine sighted an unknown aircraft and dived immediately.

4bStinchi, Amedeo5 Jul 19422030Derna6 Jul 19420545Ras Hilal60Passage Derna-Ras Hilal. Uneventful. She disembarked part of her cargo (petrol in jerrycans) but was then ordered to re-embark it and deliver it at Tobruk.

4cStinchi, Amedeo6 Jul 19421109Ras Hilal6 Jul 19422045Ras Hilal1Changed anchorage.

4dStinchi, Amedeo7 Jul 19420802Ras Hilal7 Jul 19420821Ras Hilal0,2Changed anchorage.

4eStinchi, Amedeo8 Jul 19422235Ras Hilal9 Jul 19420930Tobruk104Passage Ras Hilal-Tobruk. Uneventful. Disembarked her cargo except for 205 jerrycans of petrol.

4fStinchi, Amedeo9 Jul 19421945Tobruk10 Jul 19421100Ras Hilal110Passage Tobruk-Ras Hilal. She unloaded her remaining 205 jerrycans of petrol.

4gStinchi, Amedeo10 Jul 19422000Ras Hilal13 Jul 19421340Taranto627,7Return trip from supply mission to Tobruk.
  12 Jul 19420923
(0) About 70 miles west of Zante.
An aircraft suddenly appeared and flew only 50 metres from the submarine, which had time to fire seven machine gun rounds before checking fire, when it was observed to be German.
  12 Jul 1942DuskA submarine was observed in the distance and recognised as Santorre Di Santarosa.

Stinchi, Amedeo28 Jul 19420800Taranto28 Jul 19421636Taranto72,2Trials.

5Stinchi, Amedeo31 Jul 19421100Taranto3 Aug 19420750Tobruk702,5Supply mission to Tobruk (61 tons of Italian petrol, 3.7 tons of anti-tank ammunition and 1.5 ton of valuables).
  1 Aug 19421535
(0) South of Strait of Otranto.
An unknown steamer was sighted. The submarine altered course to avoid being seen.

5bStinchi, Amedeo3 Aug 19421800Tobruk6 Aug 19421340Taranto1372,5Return trip from supply mission to Tobruk. Uneventful. Heard only H.E. of an expected convoy.

Celeste, Giovanni25 Sep 19420800Taranto25 Sep 19421855Taranto42Trials.

6Celeste, Giovanni27 Sep 19421022Taranto28 Sep 19420830Taranto140Sailed on supply mission (63.3 tons of petrol) but returned following a fire in the forward battery.
  27 Sep 19421915
(0) About 60 miles from Taranto.
An accidental fire occurred in the battery compartment. The submarine was forced to abort her mission.

Celeste, Giovanni17 Nov 19420830Taranto17 Nov 19421515Taranto46Trials.

7Celeste, Giovanni19 Nov 19422300Taranto24 Nov 19421125TripoliSupply mission to Tripoli (60.5 tons: 57.5 tons of petrol, 2.7 tons of lubricating oil and 0.3 ton of fats).
  20 Nov 19421346
(0) About 100 miles South of Crotone.
Two unknown aircraft were observed at a distance of 3,000 metres flying toward the submarine, which dived immediately.

7bCeleste, Giovanni24 Nov 19422120Tripoli24 Nov 19422157TripoliChanged anchorage.

7cCeleste, Giovanni25 Nov 19420750Tripoli25 Nov 19420845TripoliChanged anchorage.
  25 Nov 19421933
(0) About 60 miles NE of Tripoli.
The submarine sighted an illuminated vessel, which proved to be the hospital ship Virgilio.

7dCeleste, Giovanni25 Nov 19421340Tripoli28 Nov 19422325Taranto1373Return trip from supply mission to Tripoli, the submarine suffered more engine defects. The submarine brought back 2.25 tons of Gold and other valuables from the Banca d'Italia and Cassa di Risparmio of Tripoli.
  25 Nov 19421933
(0) About 60 miles NE of Tripoli.
The submarine sighted an illuminated vessel, which proved to be the hospital ship Virgilio.

Boris, Riccardo21 Jan 1943Taranto11 Feb 1943TarantoRefit at Taranto.

Abate, Pietro27 Feb 19431005Taranto27 Feb 19431510Taranto8,1Trials.

Gentili, Ugo5 Mar 19431430Taranto5 Mar 19431831Taranto20Trials.

Gentili, Ugo6 Mar 19430545Taranto6 Mar 19431110Taranto12,9Exercises.

Gentili, Ugo13 Mar 19430800Taranto13 Mar 19431550Taranto64Trials.

Gentili, Ugo1 Apr 19430730Taranto1 Apr 19431414Taranto26Trials.

1 May 1943Taranto1 May 1943TarantoRetired from service after being used as a training vessel and in supply missions. In June 1943, she was considered for use as a pontoon for transport.

151 entries. 150 total patrol entries (7 marked as war patrols) and 9 events.

All Italian submarines