Italian submarines in World War Two


Alessandro Malaspina (MP, I.6)
Malaspina

TypeOcean going 
ClassMarconi (17) 
Laid down 1 Mar 1939 Odero-Terni-Orlando, Muggiano
Launched18 Feb 1940
Commissioned20 Jun 1940
End service
Stricken
Loss date10 Sep 1941
Loss position46° 23'N, 11° 22'W
History
Fate Went missing after sailing from Bordeaux on 7th September 1941 for the area to the West of Gibraltar, most likely sunk on 10th September 1941 in the Bay of Biscay position 46°23’N, 11°22’W by a Sunderland aircraft (RAAF Sq.10/U).

Commands

CommanderDate fromDate toCommand
T.V. Alfredo Musotto20 Jun 19404 Jul 1940
C.F. Mario Leoni4 Jul 194023 Mar 1941
T.V. Giuliano Prini23 Mar 194124 Sep 1941

Patrols and events

 CommanderDateTimePortArr. dateArr. timeArr. portMilesDescription
Musotto, Alfredo20 Jun 1940La Spezia20 Jun 1940La SpeziaEntered service on 20th June 1940.

Leoni, Mario10 Jul 19400827La Spezia10 Jul 19401140La Spezia18Exercises.

Leoni, Mario11 Jul 19400800La Spezia11 Jul 19401651La Spezia52Exercises.

Leoni, Mario13 Jul 19400745La Spezia13 Jul 19401205La Spezia38Exercises.

Leoni, Mario15 Jul 19400755La Spezia15 Jul 19401722La Spezia58Exercises.

Leoni, Mario19 Jul 19400800La Spezia19 Jul 19401700La Spezia62Exercises.

Leoni, Mario20 Jul 19400800La Spezia20 Jul 19401450La Spezia41Exercises.

Leoni, Mario25 Jul 19400750La Spezia25 Jul 19401600La Spezia10Exercises.

1Leoni, Mario29 Jul 19400400La Spezia4 Sep 19402030Bordeaux5771Passage La Spezia-Bordeaux. Patrolled on the parallel 38°40'N between 16°50'W and 20°00'W without sighting anything. From 12th to 20th August, explored the area between 38°00'N and 40°00'N, and between 20°00'W and 30°00'W, sighting four ships. She was the first Italian submarine to reach Bordeaux. Passed Gibraltar on 3rd August 1940.
  6 Aug 19401320
(0) Off the Tage Estuary between Espichal and Cape De Roca.
At 1320 hours, a steamer was sighted proceeding North. She turned out to be the Spanish Sebastian (3,024 GRT, built 1920) from Bilbao.

Shortly after, a destroyer was sighted in the mist. She turned out to be the Portuguese Douro.
  8 Aug 1940104538° 15'N, 14° 10'WAt 1045 hours, a steamer was sighted at a distance of 7,000 metres. Malaspina closed to 4,000 metres before recognising her to be Portuguese. Nevertheless, the submarine fired a warning shot and intimate the vessel to bring her papers. This was the Portuguese motor vessel San Miguel (2,112 GRT, built 1931) on passage from New York to Lisbon. She lowered an embarkation and sent her papers. She was released upon their examination.
  12 Aug 19400620
0505 (e)
38° 07'N, 22° 58'WAt 0550 hours, a steamer was sighted. Malaspina submerged to attack. It was identified as a tanker steering 200°.

At 0620 hours, two torpedoes (533mm, S.I. type) were fired from a distance of 1600 metres and the submarine went down to 15 metres. After 70 seconds, a loud explosion was heard (C.F. Leoni thought it was a double explosion).

This was the British Tanker British Fame (8,406 GRT, built 1936). She was sailing from Avonmouth to Abadan. She had sailed with convoy OB.193, but after its dispersal, she was now travelling alone. She was damaged by a torpedo hit and brought to a stop, but she opened fire on the submarine.

Malaspina had come back to periscope depth and fired a third torpedo (450mm, W 200 type) from 600 metres, It hit the engine room. The crew was now observed to abandon ship in three lifeboats and they moved away to about a mile.

At 1045 hours, a fourth torpedo (450mm, W.200 type) was fired. It was observed to hit with a large column of water but the explosion was hardly heard in the submarine. The tanker began to sink from the stern but remained afloat.

The submarine surfaced and closed the lifeboats. The Master William George Knight was taken prisoner and was well treated. C.F. Leoni would befriend him. A friendship which endured postwar.

Malaspina was armed with two old 102mm/35 cal. guns. She fired 22 rounds into the hull of the tanker, which finally sank at 1120 hours.

Three crew members perished. Forty-four survivors were rescued by the Portuguese destroyer Dao and brought to Lisbon.
  14 Aug 1940130439° 25'N, 22° 20'WAt 1150 hours, a smoke was sighted on the horizon. Malaspina closed at 14 knots. The 7-8,000-ton vessel appeared to be armed with a 102 or 120mm gun and was steering 010° at 12 knots.

At 1304 hours, the submarine had closed to 3,000 metres and fired two torpedoes (one 533 mm S.I., one 450 mm W 200 type). They missed as the vessel took avoiding action and fired two rounds at the submarine.
  14 Aug 1940211539° 30'N, 21° 30'WAt 2115 hours, a shadow was sighted on the horizon. Malaspina closed on the surface, only to realise it was a destroyer who (apparently) fired a torpedo. Malaspina dived to 100 meters but was not attacked.
  18 Aug 19401700
1908 . (e)
39° 23'N, 21° 33'WAt 1620 hours, a steamer was sighted on the horizon steering 090°, on a parallel course with Malaspina who dived.

At 1700 hours, the distance had dropped to 800 metres and the submarine was getting ready to launch torpedoes from the stern tubes. Suddenly, the 6,000-ton vessel, turned toward the submarine as if to ram her or perhaps she was just zigzagging.

C.F. Leoni took his submarine deeper to avoid being rammed. He returned to periscope depth and watched the enemy ship showing her stern, just 200 metres away. At the same time, she fired three rounds, estimated at least of 120mm, at the submarine's periscope. These shook the conning tower violently, causing some damages such as breaking down one of the two depth manometers and confusing the other, as well as blocking the aft hydroplanes. After about 30 minutes, the vessel disappeared in the mist.

This was the Armed Merchant Cruiser HMS Circassia (11,136 tons, built 1936), who fired one 6in and two 3in shells and then dropped three depth-charges.
  19 Aug 1940013939° 20'N, 21° 25'WAt 0120 hours, a dark ship was sighted at a distance of 5,000 metres steering northward. Using her diesels, Malaspina closed to 2,000 metres on the surface, then switched to her electric motors to avoid being detected.

At 0139 hours, a single torpedo (450mm, W.200 type) was fired at a distance of 1,500 metres. The target was believed to be an 8-10,000-ton vessel and the submarine dived upon firing. Because of the noise from the quick-diving tank, the hit was not heard in the control room, but only in the diesel engines room. However, the hydrophones picked up the noise of her propellers until 0153 hours, when a loud explosion was heard. It was believed that the vessel had been hit by the torpedo which caused a secondary explosion and the vessel was claimed sunk.

No allied records have confirmed such a sinking.

2Leoni, Mario9 Oct 19401420Bordeaux9 Nov 19401715Bordeaux5143Sailed for patrol between 55°20'N and 58°20'N and 23°00'W and 27°00'W (patrol report) or between 56°50'N and 58°20'N and 20°10' and 24°10'W (BETASOM).
  17 Oct 19400330
0417 (e)
53° 38'N, 21° 20'W
(0) German Grid AL 8227.
At 0330 hours, a German submarine was encountered and exchanged signals. This was U-37 (KL Viktor Oehrn).
  18 Oct 1940162556° 00'N, 23° 00'W
(0) Very approximately!
At 1625 hours, a signal from BETASOM was received. It indicated that a convoy of 15-20 steamers was seen by a U-boat (U-93?) at 1430 hours, steering 225°, 8 knots in position 59°15' N, 20°05' W. Malaspina proceeded to intercept.

Despite excellent visibility, the convoy was not seen and Malaspina abandoned the chase. Further signals arrived on the next day (by U-93 acting as beacon) and attempts were made to intercept, but these were unsuccessful until the Italian submarine sighted a vessel at 2345 hours on the 19th (see entry of 0002 hours on 20th October).
  20 Oct 19400002
0035 (e)
59° 05'N, 28° 57'WAt 2345 hours, an 8,000-ton merchant vessel was sighted on the port bow, steering 230°, 10 knots. Malaspina proceeded to attack on the surface.

At 0002 hours, a torpedo (533mm, S.I. type) was fired from a distance of 1,000 metres. Shortly after, a second torpedo of the same type was fired from 900 metres. A loud explosion was heard. However, the target failed to slow down. The submarine followed her and determined her speed to be about 12 knots (later in the action, it was assessed as 6 knots).

This was the Dutch Bussum (3,636 GRT, built 1917), on a voyage from North Shields to Montreal, steering 238° at 10.25 knots. She had a crew of 24 Dutchmen (Master Lubbert Wulp) and six British gunners and was armed with a 4" gun, one Lewis MG and three Ross rifles. She had sighted a torpedo, which missed close astern.

At 0027 hours, a third torpedo (450mm, W 200 type) was fired from 500 metres.

At 0046 hours, a fourth torpedo (533mm, S.I. type) was fired from 500 metres. No result was observed or heard for the last two. The submarine then followed Bussum firing a burst of machine gun from a distance of 1,500 metres, to test if the vessel was armed. The Dutch ship replied with three 4" rounds (C.F. Leoni saw only one) and the Malaspina opened fire with her 102mm gun but stopped after 5 rounds, as the fall of shots could not be observed in the rough seas. The action was broken off and Bussum escaped (special thanks to Siri Lawson of warsailors.com who shed light on this attack).

Leoni intended to renew the attack at dawn, but lost contact in a rain squall at 0200 hours. In the morning, debris were found in 59°20' N, 24°20' W (which was 130 miles - 110° from the point where she was claimed to have been torpedoed) and the vessel was believed to have been sunk.
  30 Oct 1940093058° 00'N, 21° 27'WAt 0930 hours, a smoke was sighted on the horizon. Malaspina attempted to intercept at a maximum speed of 14 knots due to the rough seas. It appeared to be an armed merchant cruiser. At 1230 hours, the submarine abandoned the chase.
  31 Oct 1940131557° 17'N, 23° 25'WAt 1315 hours, a convoy was sighted at a distance of 10,000 metres to the southeast. It consisted of seven steamers in single file, escorted by two destroyers on its starboard flank, steering 225° at 12 knots. Almost at the same time, a destroyer appeared to turn toward the submarine. Malaspina turned away immediately to put some distance. The destroyer appeared to catch up and, when the range had dropped tp 5,000 metres, Malaspina dived, but the waves were hitting her from the beam side and it took 132 seconds to reach a depth of 12 metres. Hydrophone contact was made, but the destroyer kept in the same bearing as the convoy and it made difficult to discern between the two. Another destroyer or sloop appeared to join the first destroyer, apparently to keep the submarine down while the convoy was getting away.

At 1730 hours, Malaspina surfaced and it was assumed now that the convoy was distant of some 48 miles.

At 2040 hours, she informed BETASOM that, at 1630 hours, she had sighted a convoy of six or seven ships escorted by destroyers in 57°25' N, 21°25' W, steering 225°, 12 knots. The position is probably erroneously deciphered as this was about 70 miles from the position recorded at 1315 hours.
  4 Nov 1940131051° 01'N, 20° 40'WAt 1310 hours, a convoy was sighted at a distance of 12-14,000 metres on a southerly course. It was later assessed as a seventeen-ship convoy, escorted by an armed merchant cruiser (destroyers were not observed) steering about 320°, 10 knots. Malaspina shadowed it with the intention of attacking at nightfall, but at 1720 hours she had lost sight of it.

This was convoy O.G. 45 (Liverpool to Gibraltar). At 1650Z hours, the British Glenaffric (7,806 GRT, built 1920), Commodore ship of the convoy (Rear-Admiral H.S. Candy, CBE), sighted the submarine in 50°52' N, 20°14' W at a distance of 6 miles.
  5 Nov 19400710-0740
0940 (e)
48° 45'N, 19° 50'WAt 0710 hours, a vessel was sighted far to the southwest steering 320° at a fast speed. Malaspina steered 180° to intercept. The vessel appeared to turn away then turned right back toward the submarine. When the range had dropped to 8,000 metres, she could be identified as a 16,000-ton armed merchant cruiser proceeding at 20 knots.

At 0740 hours, the enemy vessel was exactly astern of the submarine and she opened fire from a distance of 5,000 metres. Two rounds fell 50 and 70 metres from the submarine. C.F. Leoni correctly estimated them to be 152mm rounds. He ordered the submarine to crash-dive and just before going down the hatch, he had time to observe four more rounds straddling the submarine. Malaspina went down to 70 metres. At 0930 hours, the sound of propellers could no longer be heard.

This was the armed merchant cruiser HMS Salopian (10,549 tons, built 1926) armed with six 6" guns. She was on her way to rejoin the O.G. 45 convoy.

3Leoni, Mario4 Jan 19411140Bordeaux4 Jan 19411515Le VerdonPassage Bordeaux-Le Verdon.

3bLeoni, Mario5 Jan 19410800? AMLe Verdon5 Jan 1941AMLe VerdonGyro-compass tests.

3cLeoni, Mario5 Jan 19411630Le Verdon3 Feb 19411300+Le VerdonSailed for patrol west of Scotland (a) between 57°00'N and 58°00'N and 17°00'W and 20°00'W (b) between 53°00'N and 54°00'N and between 15°00'W and 18°00'W. Met by German minesweepers M-9 and M-21 off Royan for passage to Le Verdon.
  16 Jan 1941163057° 36'N, 19° 05'WAt 1630 hours, a signal was received reporting a convoy of twenty vessels escorted by an armed merchant cruiser in 58°05' N, 10°00' W (about 280 miles away) on a westerly course, 8 knots. Malaspina proceeded at 12 knots to intercept.

At 0330 hours on 17th January, the submarine had sighted nothing and resumed course to her patrol area.
  26 Jan 1941090053° 33'N, 15° 55'WAt 0900 hours, a submarine chaser was sighted at 1,200 metres steering on a SE course, 7-8 knots. Malaspina submerged immediately but was not attacked.
  28 Jan 1941133053° 55'N, 15° 55'WAt 1330 hours, an armed merchant cruiser, painted in grey, was sighted steering 330°, 16 knots.

At 1415 hours, the target altered course to 060° and, again at 1440 hours, to 090° but the distance could not be closed to less than 5,000 meters and the attack was abandoned.

Leoni, Mario4 Feb 19411800Le Verdon4 Feb 19412005Pauillac1Passage Le Verdon-Pauillac.

Leoni, Mario6 Feb 19411210Pauillac6 Feb 19411610BordeauxPassage Pauillac-Bordeaux.

Leoni, Mario6 Feb 19411230Pauillac6 Feb 19411610BordeauxPassage Pauillac-Bordeaux, the delayed departure was caused by the presence of magnetic mines in the estuary.

Prini, Giuliano14 Apr 19410840Bordeaux14 Apr 19411300Le Verdon62Passage Bordeaux-Le Verdon.

Prini, Giuliano14 Apr 19411500Bordeaux14 Apr 19411900Le VerdonTrials.

Prini, Giuliano15 Apr 19410805Le Verdon15 Apr 19411650La Pallice78Passage Le Verdon-La Pallice.

Prini, Giuliano16 Apr 19410820La Pallice16 Apr 19411730La Pallice41Trials.

Prini, Giuliano18 Apr 19410915La Pallice18 Apr 19411510La Pallice31Trials.

4Prini, Giuliano18 Apr 19412100La Pallice20 May 19411500Bordeaux4918Patrolled west of Ireland, between 53°00'N and 54°00'N, and between 20°00'W and 25°00'W. Arrived with Perla, escorted by Sperrbrecher III from Gironde buoy no.1 to Le Verdon.
  24 Apr 1941220749° 50'N, 20° 20'WAt 2207 hours, in poor visibility, a steamer was sighted at 4,000 metres. The submarine's diesels were emitting excessive smoke so T.V. Prini opted for a submerge attack. However, in the failing light, he could not determine the vessel's course and speed and Malaspina was brought to the surface at 2325 hours. The vessel was now at 2,500 metres. The submarine alternated between surfacing and diving to close the target but, by 0732 hours on the 25th, she had lost contact.
  3 May 1941221554° 52'N, 22° 23'WAt 2110 hours, a steamer was sighted at 6,000 metres. At 2138 hours, Malaspina dived to carry out a submerged attack.

At 2215 hours, T.V. Prini ordered tube no.4 to fire (533mm) from a distance of 800 metres. It misfired. Repeated attempts to fire it, both electrically and manually, failed. The vessel escaped in a rain squall.

This was the British Lycaon (7,552 GRT, built 1913) sailing independently to the United Kingdom.

At 2345 hours, the vessel was sighted again at 2,000 metres and she opened fire on the submarine firing at least two rounds, the closest fell about 50 meters from Malaspina. Five minutes later, she made an SOS revealing her identity and was acknowledged by the Valentia radio station. T.V. Prini maneuvered his submarine to obtain a favourable position.

At 0108 hours on 4th May, he ordered the firing from the bow (no.1 and no.4) tubes of two 533mm torpedoes and a single 450mm torpedo (no, 3 tube) from a distance of 400 metres. Only the 450mm weapon left its tube, the others misfired.

At 0128 hours, Malaspina attempted a new attack from a stern tube at 500 metres but was thwarted by the sudden change of course of her target.

At 0208 hours, a similar attempt was made from 600 metres, but was again thwarted.

At 0245 hours, Prini was frustrated once more from a distance of 800 metres, The target escaped in a rain squall and the submarine lost contact at 0415 hours in 55°10' N, 21°38' W.
  9 May 19410645-0108/1054° 14'N, 17° 43'WAt 0645 hours, the hydrophones detected turbine noises. Malaspina shut down all engines and motors (including the gyrocompass) and kept on silent running on a single electric motor.

From 1230 hours to 1440 hours, over 40 depth charges were heard. These were followed by depth charges being dropped singly every 15 or 30 minutes, interrupted by sudden flurries of multiple depth charges. In all, 97 depth charges were counted until 0108 hours on 10th May.

Malaspina surfaced at 0233 hours on to an empty horizon and cleared the area at high speed.
  11 May 1941Malaspina was informed of a convoy sighted at 0745 hours in 56°57' N, 17°18' W steering 240°. The search was negative.
  11 May 194153° 00'N, 18° 30'W
(0) Approximately.
During a period of torpedo maintenance, a rating accidentally fired the no.4 tube (which had misfired twice on 3rd and 4th May) causing damage to the bow tube opening, which was closed at the time.

Despite the damage, four days later, the submarine managed to dive down to 126 meters. Following this patrol, an inquest presided by C.V. Polacchini, reprimanded Prini and his First Officer Paolo Monechi, as the submarine failed to carry out two torpedo attacks due to errors in drill and then lost this torpedo, causing damage. However, Polacchini did recognise that Prini had conducted his mission with tenacity and aggressivity. Of the two ratings responsible for the accidental firing of the torpedo, one received a prison sentence and the other was transferred to a surface unit.

Prini was still in command of Malaspina when she was later sunk with all hands. He was awarded the Medaglia d'Oro posthumously. Later, Monechi was given the command of Mocenigo, followed by that of the new submarine Tritone, who was lost off Bougie on her first patrol, but Monechi survived.
  15 May 1941170053° 52'N, 18° 45'WAt 0400 hours on 14th May, T.V. Prini informed BETASOM that he was returning home. He was ordered to prolong his patrol by 48 hours and to proceed to a point about 160 miles ENE of his present position to intercept a convoy. Malaspina was to be part of a patrol line at dawn on 15th May:

Malaspina in 52°55' N, 18°55' W.
Oraria in 53°05' N, 16°55' W.
Morosini in 53°25' N, 17°25' W.
Bianchi in 54°15' N, 18°15' W.
Barbarigo in 56°55' N, 17°55' W.

At 0700 hours, Malaspina reached her new patrol position.

At 1200 hours, the convoy was reported in a new position and it was moving toward the patrol line. Malaspina moved at full speed, expecting to intercept it at 2000 hours.

At 1700 hours on 15th May, smokes were sighted.
  15 May 19411720
1835 (e)
53° 52'N, 18° 45'W
(0) Approximately.
At 1705 hours, an aircraft was first sighted flying toward the convoy. As Malaspina had intercepted a signal from BETASOM to Bianchi, informing her that German aircraft were going to attack the convoy, T.V. Prini thought that this was one of them.

At 1720 hours, an aircraft was seen flying on parallel course with the submarine at a distance of 4.000 metres. The aircraft fired a red rocket, similar to the recognition signal of the day (red and white) and Malaspina replied accordingly. As the aircraft now flew toward the submarine, Prini ordered the machine guns to fire. The aircraft did not attack, but tried to stay astern of the submarine and made a series of signals with Malaspina replying with her Breda guns to keep it at bay.

At 1749 hours, the submarine had closed the convoy estimated at about 18-20 ships. A destroyer stationed astern of the convoy turned toward the submarine at high speed. Malaspina dived and had reached a depth of 40 metres when a depth charge dropped by the aircraft. About 20 minutes later, hydrophone effects indicated the arrival of three destroyers.

At 1832 hours, a destroyer dropped the first pattern of depth charges. The two manometers were defective, a few light bulbs broken, but otherwise, no serious damage. More depth charges were recorded at 1855, 1922, 1934, 1940 and 1953 hours. Noises were heard until 2256 hours, then again at 0114 and 0308 hours on 16th May.

At 0405 hours, Malaspina was getting short of air and surfaced. Fortunately, no enemy vessel was in sight.
  16 May 1941042553° 20'N, 19° 15'WAt 0425 hours, Malaspina had just been on the surface for 20 minutes, when a destroyer was sighted using her searchlights. The submarine turned away and escaped to the northeast.
  17 May 1941090549° 00'N, 16° 55'WAt 0438 hours, Malaspina received BETASOM's order to return home.

At 0905 hours, an aircraft was sighted at 4,000 metres and the submarine dived.
  18 May 1941150547° 00'N, 9° 55'WAt 1505 hours, an aircraft was sighted at 6,000 metres and the submarine dived.
  18 May 1941215046° 35'N, 8° 40'WAt 2150 hours, two shadows, apparently warships, were sighted and Malaspina dived.
  19 May 19411140-120046° 00'N, 5° 32'WAt 1140 hours, Malaspina sighted an aircraft at 1,000 metres. It turned out to be an Arado seaplane. The submarine tried to fire a reconnaissance rocket (no. 3) but it misfired. The Donath projector was then used to flash a signal. The reconnaissance signal was to change at noon with a no. 4 rocket and T.V. Prini was ready to give the order to fire it, but the aircraft flew away.
  19 May 19411640
1640 (e)
45° 40'N, 4° 05'WAt 1640 hours, an aircraft was sighted at 5,000 metres. It had closed to 3,000 metres when it was recognised to be a Sunderland.

At 2,500 metres, Malaspina opened intense antiaircraft fire with her machine guns. The aircraft appeared to hesitate for a while, then went into the attack and dropped five bombs from a height of 200 metres. One of the Italian machine gunners claimed to have sighted a machine gunner on the aircraft slumping in his seat.

This was Sunderland 'J' of 10 Squadron (RAAF) piloted by Flight Lieutenant J. Costello. It had sighted the submarine from a distance of 15 miles. Actually four depth-charges were dropped from a height of 200 feet , two set at a depth of 100 feet and two to 150 feet. It also machine-gunned the submarine with 70 rounds (rear gun: 50 rounds, port midship's turret: 20 rounds). The depth charges are reported to have missed the submarine by 40 feet fore and aft the conning tower on the port side.

Malaspina had escaped damage and dived.

5Prini, Giuliano27 Jun 19410900Bordeaux27 Jun 19411300Le VerdonPassage Bordeaux-Le Verdon.

5bPrini, Giuliano27 Jun 19411610Le Verdon27 Jun 19411745Le VerdonTrials.

6Prini, Giuliano27 Jun 19412100Le Verdon5 Aug 19411750Bordeaux7032Patrolled west of Gibraltar. On 30th June ordered to 33°00'N, 11°45'W. On 10th July, ordered to 36°55'N, 12°55'W. On 12th July, ordered to 36°25'N, 22°05'W. on 25th July, was ordered to 35°45'N, 11°25'W. Then refit until September 1941.
  28 Jun 1941133044° 39'N, 3° 32'WAt 1330 hours, two large Spanish fishing vessels were sighted, one of them was Nuevo Soledad (106 GRT, built 1931) from Aviles. The submarine avoided them.
  29 Jun 1941During the day, Malaspina was ordered by BETASOM to proceed south on 12°00' W meridian to 33°05' N, 11°45' W (Italian Grid 3972/51).
  30 Jun 19411045At 1045 hours, BETASOM had ordered the submarines to the following positions:

Torelli in 2533/36 (36°58'N, 12°30'W)
Morosini in 2511/33 (36°30'N, 13°20'W)
Cappellini in 8511/66 (35°58'N, 14°00'W)
Da Vinci in 8511/33 (35°30' N, 13°20' W)
Baracca in 8533/31 (35°10'N, 12°30'W)
Malaspina in 3972/51 (33°00'N, 11°45'W)

Malaspina proceeded.
  30 Jun 1941211543° 48'N, 12° 04'WAt 2115 hours, Malaspina sighted Morosini and exchanged recognition signals.
  2 Jul 1941184536° 43'N, 12° 22'WAt 1525 hours, a steamer was sighted proceeding at 13 knots. At 1800 hours, Malaspina submerged to attack.

At 1845 hours, she surfaced and stopped her with a warning shot.

She was Argentinian steamer Rio Grande (687 GRT, built 1920) on a voyage from Lisbon to Buenos Aires. She was ordered to send a boat with her papers. They proved to be in order and she was released.
  3 Jul 1941111535° 14'N, 11° 26'WAt 1115 hours, a destroyer was observed at a distance of 8,000 metres. Malaspina dived and was not detected.
  7 Jul 19411500-175034° 10'N, 9° 38'W
(0) Approximately.
At 1500 hours, a vessel was sighted. It was at initially thought to be an armed merchant cruiser.

At 1750 hours, Malaspina submerged to carry an attack, only to identify the vessel as the Spanish Ciudad De Alicante (2,434 GRT, built 1930) from Valencia.
  7 Jul 1941200534° 10'N, 9° 38'WAt 1715 hours, BETASOM ordered the submarines to the following positions:

Torelli in 9672/32 (34°15'N, 11°25'W)
Da Vinci in 9672/34 (34°35'N, 11°25'W)
Baracca in 9672/12 (34°15'N, 11°05'W)
Malaspina in 9697/42 (34°15'N, 10°35'W).

At 2005 hours, a large fishing vessel was sighted but no action was taken, as a four-engine bomber appeared shortly after. It looked like a Boeing aircraft and the submarine dived.
  8 Jul 1941160033° 13'N, 10° 41'WAt 1100 hours, BETASOM ordered the submarines to the following positions:

Bianchi in 2772/11 (36°05' N, 11°05' W)
Torelli in 8597/61 (35°05' N, 10°55' W)
Morosini in 8597/34 (35°35' N, 10°25' W)
Baracca in 9697/11 (34°05' N, 10°05' W)
Malaspina in 3997/54 (33°35' N, 10°45' W)
Da Vinci in 9697/25 (34°15' N, 10°45' W) (the BETASOM diaries give the position as 35°55' N, 19°15' W but this is a typographical error).

At 1608 hours, a destroyer was sighted at a distance of 10,000 metres. Malaspina dived.
  10 Jul 1941Malaspina was ordered by BETASOM to proceed to 36°55' N, 12°55' W.
  11 Jul 1941113035° 18'N, 13° 25'WMalaspina received an order from BETASOM to proceed at 10 knots to 34°05' N, 17°05' W.

At 1130 hours, a steamer was sighted and she submerged for the attack. This was the Portuguese Quanza (6,657 GRT, built 1929) from Funchal (Madeira) and the attack was aborted.
  12 Jul 1941Malaspina received an order from BETASOM to proceed to 36°25' N, 22°05' W to form a barrage line with three other submarines (Bianchi, Morosini and Torelli).
  15 Jul 1941011035° 51'N, 25° 31'WAt 2215 hours on 14th July, a steamer was sighted in 36°06' N, 21°21' W. Malaspina dived and followed her submerged.

At 2325 hours, the submarine surfaced at a distance of 3,000 metres to seek a position of attack ahead of her target. At 2351 hours, a radio signal was intercepted leaving little doubt that Malaspina had been sighted. The vessel now turned away and appeared to put her best speed to escape from her pursuer and this was a little over 10 knots.

At 0110 hours, the submarine fired a pair of torpedoes (one 533mm, S.I. 270 type, one 450mm, W 200 type) from her bow tubes at a distance of 700 metres. Before the torpedoes reached their target, T.V. Prini ordered the firing of a third torpedo (533mm, S.I. 270 type). Two torpedoes were seen to hit, both of the 533mm type. The first hit amidship, the second appeared to hit the engine room. The vessel broke in two and sank in three minutes. The 450mm torpedo was observed to have an irregular course and apparently missed ahead.

This was the Greek Nikoklis (3,576 GRT, built 1921) detached from convoy OG.67d.

Seventeen were killed and eleven survived. Prini thought they were picked up by the Spanish vessels Campeche and Campero (this was an error). In fact, thirteen survivors reached Cape Juby (Morocco), but two died before they landed. They were later brought to Las Palmas by a Spanish steamer.
  17 Jul 19411824
1700 (e)
30° 48'N, 18° 26'WAt 1645 hours, in 30°51' N, 17°16' W, a steamer was sighted in the mist at a close distance, steering a course almost parallel to the submarine.

At 1735 hours, Malaspina submerged to carry out an attack.

At 1824 hours, T.V. Prini ordered the firing of a torpedo (533mm, S.I. 270 type) from a stern tube (no. 8) at a distance of 1,000 metres. For a few seconds, the torpedo did not completely leave the tube and, when it finally did, the delay resulted in a miss.

At 1837 hours, Malaspina had reverted course and fired a torpedo from a bow tube (533mm, S.I. 270 type). It hit the vessel in no.5 hold. T.V. Prini took his submarine down to 40 metres to listen to the hydrophones.

This was the British Guelma (4,402 GRT, built 1928, Master W.G. Taylor) detached from convoy O.B.337 and in ballast, on passage from Funchal (Madeira) to Freetown.

At 1900 hours, Malaspina resurfaced to observe her victim still floating but down by the stern. The vessel had made an SOS. The crew was abandoning ship and about thirty survivors were seen in lifeboats.

At 1942 hours, the submarine fired a third torpedo (450mm, W 200 type), this time from a stern tube and at a distance of 1,000 metres. It had an irregular course and missed astern.

At 2002 hours, a fourth torpedo (533mm, S.I. type) was fired from a stern tube. It hit amidship. The vessel rapidly sank stern first.

All forty-one members of her crew and two Portuguese stowaways were rescued by the British submarine HMS Thunderbolt on 18th July.
  18 Jul 1941163030° 07'N, 14° 22'WAt 1630 hours, a steamer was sighted at a distance of 5,000 metres.

At 1730 hours, Malaspina submerged for an attack.

At 1820 hours, she was identified as the Spanish Miraflores (3,209 GRT, built 1919) from Bilbao and the attack was aborted.
  19 Jul 19412245At 2245 hours, a signal from the submarine Bagnolini was intercepted. It reported the discovery of a convoy and Malaspina altered course to intercept.
  20 Jul 19410600At 0600 hours, Malaspina received an order to proceed to 34°35' N, 13°45' W. This was reached at 2200 hours but was then ordered to 33°45' N, 14°35' W.
  21 Jul 1941060032° 45'N, 14° 35'WAt 0500 hours, Malaspina received an order to proceed to 32°45' N, 15°15' W. This was reached at 2100 hours.
  22 Jul 1941Dawn32° 45'N, 15° 15'WAt dawn, Malaspina received an order to proceed to 29°55' N, 13°05' W.

At 2300 hours, the submarine received the order frpm BETASOM to operate up to the limit of autonomy in a square delimited by the parallels 34° and 35° N and the meridians 14° and 15° W.
  24 Jul 1941014534° 32'N, 14° 33'WAt 2200 hours on 23rd July, Malaspina was ordered to proceed to 35°35' N, 12°35' W, to intercept a convoy reported by Bagnolini.

At 0145 hours on 24th July, searchlights were sighted scanning the sea, especially toward the wake of the submarine proceeding on the surface. At 0155 hours, T.V. Prini believing his submarine discovered by the enemy's hydrophones, took her down to 80 metres.

At 0245 and 0248 hours, depth charges were heard. Motors were stopped to observe the maximum silence.

At 1350 hours, Malaspina returned to periscope depth to observe that the enemy vessels were gone.
  25 Jul 1941The submarine was ordered to 35°45' N, 11°25' W. The position was reached at 2000 hours on 26th July.
  27 Jul 1941042035° 45'N, 11° 25'WA steamer was sighted steering to the NE. The submarine closed to 1,500 metres but T.V. Prini could not determine her nationality. However, she was well illuminated according to International regulations and he believed she was probably Portuguese.
  31 Jul 1941094538° 04'N, 11° 23'WAt 0945 hours, a steamer, who must have left Lisbon, was sighted at 4,000 metres steering 260°. Malaspina could not close because of heavy seas and as she was short of fuel, the chase was abandoned.
  2 Aug 1941010041° 10'N, 11° 24'WAt 0100 hours, an illuminated passenger ship was sighted proceeding toward Vigo.
  3 Aug 1941020044° 12'N, 9° 12'WAt 0200 hours, a German U-boat was sighted at a distance of 6-7,000 metres, coming from the direction of Cape Finisterre (possibly U-66?). Malaspina turned away.

7Prini, Giuliano7 Sep 1941EveningLe Verdon24 Sep 1941Date? 10/9?Sunk (with all hands)Sailed via Route II to operate against Gibraltar convoys. Ordered to reach the position 35°55'N, 09°05'W, on a line on Cape St. Vincent meridian, during the night of 13th September 1941. She disappeared without a trace (eight officers, fifty-two ratings and one military were lost). Probably sunk on 10th September by a Sunderland of 10 Squadron (RAAF).

Some sources have attributed her loss to the destroyer HMS Vimy who sighted a U-boat at 0555 hours 12th September in 36°40'N, 09°10'W and attacked with a full pattern but this was Otaria. Other sources have suggested that it was another attack by HMS Vimy on 21st September in 37°46'N, 19°18'W but this attack was actually on Torelli.

On 24th September 1941, a German aircraft reported seeing two ships sunk and a third set afire (from a convoy which had sailed from Gibraltar on 17th September 1941) in an area where no ships were reported sunk by Italian or German submarines, it was thought that these were hit by Malaspina. Prini was posthumously awarded the Medaglia D'Oro.
  10 Sep 1941
1100 (e)

(e) 46° 23'N, 11° 22'E
At 1100 hours, Sunderland 'U' (W3986) of 10 Squadron (RAAF), piloted by Flight Lieutenant A.G.H. Wearne, was flying at an altitude of 1,000 feet when a U-boat was sighted at about 1,000 yards, bearing 20°, on the port bow. She was steering 260° at 8 knots. Within about 25 seconds, an attack was made from astern with four 450-lb depth charges, two set to 50 feet and two to 100 feet, but the third hung up. The first fell abaft the conning tower, the second near the bows and a third at about 140 feet ahead. The Observer sighted the U-boat appearing to be stationary under the water and then disappeared without leaving any bubbles. The aircraft flew over the area for the next two and half hours but sighted nothing. It is likely that Malaspina was sunk in this attack as she was supposed to be steering 270° on the 45°40' N parallel. There were no survivors. Seven officers and fifty-three ratings perished. On 24th September 1941, a German aircraft reported seeing two ships sunk and a third set afire from a convoy which had sailed from Gibraltar on 17th September 1941 in an area where no ships were reported sunk by Italian or German submarines. At the time, it was thought that these were hit by Malaspina, but this story can be attributed to the German pilot's error. T.V. Prini was posthumously awarded the Medaglia d'Oro.

76 entries. 26 total patrol entries (7 marked as war patrols) and 56 events.

Events

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

CommanderDateTimePositionDescription
Mario Leoni6 Aug 19401320(o) Off the Tage Estuary between Espichal and Cape De Roca.At 1320 hours, a steamer was sighted proceeding North. She turned out to be the Spanish Sebastian (3,024 GRT, built 1920) from Bilbao.

Shortly after, a destroyer was sighted in the mist. She turned out to be the Portuguese Douro.
Mario Leoni8 Aug 1940104538.15 N, 14.10 W
(e) 38.10 N, 13.40 W
At 1045 hours, a steamer was sighted at a distance of 7,000 metres. Malaspina closed to 4,000 metres before recognising her to be Portuguese. Nevertheless, the submarine fired a warning shot and intimate the vessel to bring her papers. This was the Portuguese motor vessel San Miguel (2,112 GRT, built 1931) on passage from New York to Lisbon. She lowered an embarkation and sent her papers. She was released upon their examination.
Mario Leoni12 Aug 19400620
0505 (e)
38.07 N, 22.58 W
(e) 37.44 N, 22.56 W
At 0550 hours, a steamer was sighted. Malaspina submerged to attack. It was identified as a tanker steering 200°.

At 0620 hours, two torpedoes (533mm, S.I. type) were fired from a distance of 1600 metres and the submarine went down to 15 metres. After 70 seconds, a loud explosion was heard (C.F. Leoni thought it was a double explosion).

This was the British Tanker British Fame (8,406 GRT, built 1936). She was sailing from Avonmouth to Abadan. She had sailed with convoy OB.193, but after its dispersal, she was now travelling alone. She was damaged by a torpedo hit and brought to a stop, but she opened fire on the submarine.

Malaspina had come back to periscope depth and fired a third torpedo (450mm, W 200 type) from 600 metres, It hit the engine room. The crew was now observed to abandon ship in three lifeboats and they moved away to about a mile.

At 1045 hours, a fourth torpedo (450mm, W.200 type) was fired. It was observed to hit with a large column of water but the explosion was hardly heard in the submarine. The tanker began to sink from the stern but remained afloat.

The submarine surfaced and closed the lifeboats. The Master William George Knight was taken prisoner and was well treated. C.F. Leoni would befriend him. A friendship which endured postwar.

Malaspina was armed with two old 102mm/35 cal. guns. She fired 22 rounds into the hull of the tanker, which finally sank at 1120 hours.

Three crew members perished. Forty-four survivors were rescued by the Portuguese destroyer Dao and brought to Lisbon.
Mario Leoni14 Aug 1940130439.25 N, 22.20 W
At 1150 hours, a smoke was sighted on the horizon. Malaspina closed at 14 knots. The 7-8,000-ton vessel appeared to be armed with a 102 or 120mm gun and was steering 010° at 12 knots.

At 1304 hours, the submarine had closed to 3,000 metres and fired two torpedoes (one 533 mm S.I., one 450 mm W 200 type). They missed as the vessel took avoiding action and fired two rounds at the submarine.
Mario Leoni14 Aug 1940211539.30 N, 21.30 W
At 2115 hours, a shadow was sighted on the horizon. Malaspina closed on the surface, only to realise it was a destroyer who (apparently) fired a torpedo. Malaspina dived to 100 meters but was not attacked.
Mario Leoni18 Aug 19401700
1908 . (e)
39.23 N, 21.33 W
(e) 39.17 N, 21.33 W
At 1620 hours, a steamer was sighted on the horizon steering 090°, on a parallel course with Malaspina who dived.

At 1700 hours, the distance had dropped to 800 metres and the submarine was getting ready to launch torpedoes from the stern tubes. Suddenly, the 6,000-ton vessel, turned toward the submarine as if to ram her or perhaps she was just zigzagging.

C.F. Leoni took his submarine deeper to avoid being rammed. He returned to periscope depth and watched the enemy ship showing her stern, just 200 metres away. At the same time, she fired three rounds, estimated at least of 120mm, at the submarine's periscope. These shook the conning tower violently, causing some damages such as breaking down one of the two depth manometers and confusing the other, as well as blocking the aft hydroplanes. After about 30 minutes, the vessel disappeared in the mist.

This was the Armed Merchant Cruiser HMS Circassia (11,136 tons, built 1936), who fired one 6in and two 3in shells and then dropped three depth-charges.
Mario Leoni19 Aug 1940013939.20 N, 21.25 W
At 0120 hours, a dark ship was sighted at a distance of 5,000 metres steering northward. Using her diesels, Malaspina closed to 2,000 metres on the surface, then switched to her electric motors to avoid being detected.

At 0139 hours, a single torpedo (450mm, W.200 type) was fired at a distance of 1,500 metres. The target was believed to be an 8-10,000-ton vessel and the submarine dived upon firing. Because of the noise from the quick-diving tank, the hit was not heard in the control room, but only in the diesel engines room. However, the hydrophones picked up the noise of her propellers until 0153 hours, when a loud explosion was heard. It was believed that the vessel had been hit by the torpedo which caused a secondary explosion and the vessel was claimed sunk.

No allied records have confirmed such a sinking.
Mario Leoni17 Oct 19400330
0417 (e)
53.38 N, 21.20 W
(e) 53.27 N, 21.25 W
(o) German Grid AL 8227.
At 0330 hours, a German submarine was encountered and exchanged signals. This was U-37 (KL Viktor Oehrn).
Mario Leoni18 Oct 1940162556.00 N, 23.00 W
(o) Very approximately!
At 1625 hours, a signal from BETASOM was received. It indicated that a convoy of 15-20 steamers was seen by a U-boat (U-93?) at 1430 hours, steering 225°, 8 knots in position 59°15' N, 20°05' W. Malaspina proceeded to intercept.

Despite excellent visibility, the convoy was not seen and Malaspina abandoned the chase. Further signals arrived on the next day (by U-93 acting as beacon) and attempts were made to intercept, but these were unsuccessful until the Italian submarine sighted a vessel at 2345 hours on the 19th (see entry of 0002 hours on 20th October).
Mario Leoni20 Oct 19400002
0035 (e)
59.05 N, 28.57 W
(e) 59.52 N, 28.52 E
At 2345 hours, an 8,000-ton merchant vessel was sighted on the port bow, steering 230°, 10 knots. Malaspina proceeded to attack on the surface.

At 0002 hours, a torpedo (533mm, S.I. type) was fired from a distance of 1,000 metres. Shortly after, a second torpedo of the same type was fired from 900 metres. A loud explosion was heard. However, the target failed to slow down. The submarine followed her and determined her speed to be about 12 knots (later in the action, it was assessed as 6 knots).

This was the Dutch Bussum (3,636 GRT, built 1917), on a voyage from North Shields to Montreal, steering 238° at 10.25 knots. She had a crew of 24 Dutchmen (Master Lubbert Wulp) and six British gunners and was armed with a 4" gun, one Lewis MG and three Ross rifles. She had sighted a torpedo, which missed close astern.

At 0027 hours, a third torpedo (450mm, W 200 type) was fired from 500 metres.

At 0046 hours, a fourth torpedo (533mm, S.I. type) was fired from 500 metres. No result was observed or heard for the last two. The submarine then followed Bussum firing a burst of machine gun from a distance of 1,500 metres, to test if the vessel was armed. The Dutch ship replied with three 4" rounds (C.F. Leoni saw only one) and the Malaspina opened fire with her 102mm gun but stopped after 5 rounds, as the fall of shots could not be observed in the rough seas. The action was broken off and Bussum escaped (special thanks to Siri Lawson of warsailors.com who shed light on this attack).

Leoni intended to renew the attack at dawn, but lost contact in a rain squall at 0200 hours. In the morning, debris were found in 59°20' N, 24°20' W (which was 130 miles - 110° from the point where she was claimed to have been torpedoed) and the vessel was believed to have been sunk.
Mario Leoni30 Oct 1940093058.00 N, 21.27 W
At 0930 hours, a smoke was sighted on the horizon. Malaspina attempted to intercept at a maximum speed of 14 knots due to the rough seas. It appeared to be an armed merchant cruiser. At 1230 hours, the submarine abandoned the chase.
Mario Leoni31 Oct 1940131557.17 N, 23.25 W
At 1315 hours, a convoy was sighted at a distance of 10,000 metres to the southeast. It consisted of seven steamers in single file, escorted by two destroyers on its starboard flank, steering 225° at 12 knots. Almost at the same time, a destroyer appeared to turn toward the submarine. Malaspina turned away immediately to put some distance. The destroyer appeared to catch up and, when the range had dropped tp 5,000 metres, Malaspina dived, but the waves were hitting her from the beam side and it took 132 seconds to reach a depth of 12 metres. Hydrophone contact was made, but the destroyer kept in the same bearing as the convoy and it made difficult to discern between the two. Another destroyer or sloop appeared to join the first destroyer, apparently to keep the submarine down while the convoy was getting away.

At 1730 hours, Malaspina surfaced and it was assumed now that the convoy was distant of some 48 miles.

At 2040 hours, she informed BETASOM that, at 1630 hours, she had sighted a convoy of six or seven ships escorted by destroyers in 57°25' N, 21°25' W, steering 225°, 12 knots. The position is probably erroneously deciphered as this was about 70 miles from the position recorded at 1315 hours.
Mario Leoni4 Nov 1940131051.01 N, 20.40 W
At 1310 hours, a convoy was sighted at a distance of 12-14,000 metres on a southerly course. It was later assessed as a seventeen-ship convoy, escorted by an armed merchant cruiser (destroyers were not observed) steering about 320°, 10 knots. Malaspina shadowed it with the intention of attacking at nightfall, but at 1720 hours she had lost sight of it.

This was convoy O.G. 45 (Liverpool to Gibraltar). At 1650Z hours, the British Glenaffric (7,806 GRT, built 1920), Commodore ship of the convoy (Rear-Admiral H.S. Candy, CBE), sighted the submarine in 50°52' N, 20°14' W at a distance of 6 miles.
Mario Leoni5 Nov 19400710-0740
0940 (e)
48.45 N, 19.50 W
(e) 48.55 N, 20.00 W
At 0710 hours, a vessel was sighted far to the southwest steering 320° at a fast speed. Malaspina steered 180° to intercept. The vessel appeared to turn away then turned right back toward the submarine. When the range had dropped to 8,000 metres, she could be identified as a 16,000-ton armed merchant cruiser proceeding at 20 knots.

At 0740 hours, the enemy vessel was exactly astern of the submarine and she opened fire from a distance of 5,000 metres. Two rounds fell 50 and 70 metres from the submarine. C.F. Leoni correctly estimated them to be 152mm rounds. He ordered the submarine to crash-dive and just before going down the hatch, he had time to observe four more rounds straddling the submarine. Malaspina went down to 70 metres. At 0930 hours, the sound of propellers could no longer be heard.

This was the armed merchant cruiser HMS Salopian (10,549 tons, built 1926) armed with six 6" guns. She was on her way to rejoin the O.G. 45 convoy.
Mario Leoni16 Jan 1941163057.36 N, 19.05 W
At 1630 hours, a signal was received reporting a convoy of twenty vessels escorted by an armed merchant cruiser in 58°05' N, 10°00' W (about 280 miles away) on a westerly course, 8 knots. Malaspina proceeded at 12 knots to intercept.

At 0330 hours on 17th January, the submarine had sighted nothing and resumed course to her patrol area.
Mario Leoni26 Jan 1941090053.33 N, 15.55 W
At 0900 hours, a submarine chaser was sighted at 1,200 metres steering on a SE course, 7-8 knots. Malaspina submerged immediately but was not attacked.
Mario Leoni28 Jan 1941133053.55 N, 15.55 W
At 1330 hours, an armed merchant cruiser, painted in grey, was sighted steering 330°, 16 knots.

At 1415 hours, the target altered course to 060° and, again at 1440 hours, to 090° but the distance could not be closed to less than 5,000 meters and the attack was abandoned.
Giuliano Prini24 Apr 1941220749.50 N, 20.20 W
At 2207 hours, in poor visibility, a steamer was sighted at 4,000 metres. The submarine's diesels were emitting excessive smoke so T.V. Prini opted for a submerge attack. However, in the failing light, he could not determine the vessel's course and speed and Malaspina was brought to the surface at 2325 hours. The vessel was now at 2,500 metres. The submarine alternated between surfacing and diving to close the target but, by 0732 hours on the 25th, she had lost contact.
Giuliano Prini3 May 1941221554.52 N, 22.23 W
At 2110 hours, a steamer was sighted at 6,000 metres. At 2138 hours, Malaspina dived to carry out a submerged attack.

At 2215 hours, T.V. Prini ordered tube no.4 to fire (533mm) from a distance of 800 metres. It misfired. Repeated attempts to fire it, both electrically and manually, failed. The vessel escaped in a rain squall.

This was the British Lycaon (7,552 GRT, built 1913) sailing independently to the United Kingdom.

At 2345 hours, the vessel was sighted again at 2,000 metres and she opened fire on the submarine firing at least two rounds, the closest fell about 50 meters from Malaspina. Five minutes later, she made an SOS revealing her identity and was acknowledged by the Valentia radio station. T.V. Prini maneuvered his submarine to obtain a favourable position.

At 0108 hours on 4th May, he ordered the firing from the bow (no.1 and no.4) tubes of two 533mm torpedoes and a single 450mm torpedo (no, 3 tube) from a distance of 400 metres. Only the 450mm weapon left its tube, the others misfired.

At 0128 hours, Malaspina attempted a new attack from a stern tube at 500 metres but was thwarted by the sudden change of course of her target.

At 0208 hours, a similar attempt was made from 600 metres, but was again thwarted.

At 0245 hours, Prini was frustrated once more from a distance of 800 metres, The target escaped in a rain squall and the submarine lost contact at 0415 hours in 55°10' N, 21°38' W.
Giuliano Prini9 May 19410645-0108/1054.14 N, 17.43 W
At 0645 hours, the hydrophones detected turbine noises. Malaspina shut down all engines and motors (including the gyrocompass) and kept on silent running on a single electric motor.

From 1230 hours to 1440 hours, over 40 depth charges were heard. These were followed by depth charges being dropped singly every 15 or 30 minutes, interrupted by sudden flurries of multiple depth charges. In all, 97 depth charges were counted until 0108 hours on 10th May.

Malaspina surfaced at 0233 hours on to an empty horizon and cleared the area at high speed.
Giuliano Prini11 May 1941Malaspina was informed of a convoy sighted at 0745 hours in 56°57' N, 17°18' W steering 240°. The search was negative.
Giuliano Prini11 May 194153.00 N, 18.30 W
(o) Approximately.
During a period of torpedo maintenance, a rating accidentally fired the no.4 tube (which had misfired twice on 3rd and 4th May) causing damage to the bow tube opening, which was closed at the time.

Despite the damage, four days later, the submarine managed to dive down to 126 meters. Following this patrol, an inquest presided by C.V. Polacchini, reprimanded Prini and his First Officer Paolo Monechi, as the submarine failed to carry out two torpedo attacks due to errors in drill and then lost this torpedo, causing damage. However, Polacchini did recognise that Prini had conducted his mission with tenacity and aggressivity. Of the two ratings responsible for the accidental firing of the torpedo, one received a prison sentence and the other was transferred to a surface unit.

Prini was still in command of Malaspina when she was later sunk with all hands. He was awarded the Medaglia d'Oro posthumously. Later, Monechi was given the command of Mocenigo, followed by that of the new submarine Tritone, who was lost off Bougie on her first patrol, but Monechi survived.
Giuliano Prini15 May 1941170053.52 N, 18.45 W
At 0400 hours on 14th May, T.V. Prini informed BETASOM that he was returning home. He was ordered to prolong his patrol by 48 hours and to proceed to a point about 160 miles ENE of his present position to intercept a convoy. Malaspina was to be part of a patrol line at dawn on 15th May:

Malaspina in 52°55' N, 18°55' W.
Oraria in 53°05' N, 16°55' W.
Morosini in 53°25' N, 17°25' W.
Bianchi in 54°15' N, 18°15' W.
Barbarigo in 56°55' N, 17°55' W.

At 0700 hours, Malaspina reached her new patrol position.

At 1200 hours, the convoy was reported in a new position and it was moving toward the patrol line. Malaspina moved at full speed, expecting to intercept it at 2000 hours.

At 1700 hours on 15th May, smokes were sighted.
Giuliano Prini15 May 19411720
1835 (e)
53.52 N, 18.45 W
(e) 53.40 N, 19.30 W
(o) Approximately.
At 1705 hours, an aircraft was first sighted flying toward the convoy. As Malaspina had intercepted a signal from BETASOM to Bianchi, informing her that German aircraft were going to attack the convoy, T.V. Prini thought that this was one of them.

At 1720 hours, an aircraft was seen flying on parallel course with the submarine at a distance of 4.000 metres. The aircraft fired a red rocket, similar to the recognition signal of the day (red and white) and Malaspina replied accordingly. As the aircraft now flew toward the submarine, Prini ordered the machine guns to fire. The aircraft did not attack, but tried to stay astern of the submarine and made a series of signals with Malaspina replying with her Breda guns to keep it at bay.

At 1749 hours, the submarine had closed the convoy estimated at about 18-20 ships. A destroyer stationed astern of the convoy turned toward the submarine at high speed. Malaspina dived and had reached a depth of 40 metres when a depth charge dropped by the aircraft. About 20 minutes later, hydrophone effects indicated the arrival of three destroyers.

At 1832 hours, a destroyer dropped the first pattern of depth charges. The two manometers were defective, a few light bulbs broken, but otherwise, no serious damage. More depth charges were recorded at 1855, 1922, 1934, 1940 and 1953 hours. Noises were heard until 2256 hours, then again at 0114 and 0308 hours on 16th May.

At 0405 hours, Malaspina was getting short of air and surfaced. Fortunately, no enemy vessel was in sight.
Giuliano Prini16 May 1941042553.20 N, 19.15 W
At 0425 hours, Malaspina had just been on the surface for 20 minutes, when a destroyer was sighted using her searchlights. The submarine turned away and escaped to the northeast.
Giuliano Prini17 May 1941090549.00 N, 16.55 W
At 0438 hours, Malaspina received BETASOM's order to return home.

At 0905 hours, an aircraft was sighted at 4,000 metres and the submarine dived.
Giuliano Prini18 May 1941150547.00 N, 09.55 W
At 1505 hours, an aircraft was sighted at 6,000 metres and the submarine dived.
Giuliano Prini18 May 1941215046.35 N, 08.40 W
At 2150 hours, two shadows, apparently warships, were sighted and Malaspina dived.
Giuliano Prini19 May 19411140-120046.00 N, 05.32 W
At 1140 hours, Malaspina sighted an aircraft at 1,000 metres. It turned out to be an Arado seaplane. The submarine tried to fire a reconnaissance rocket (no. 3) but it misfired. The Donath projector was then used to flash a signal. The reconnaissance signal was to change at noon with a no. 4 rocket and T.V. Prini was ready to give the order to fire it, but the aircraft flew away.
Giuliano Prini19 May 19411640
1640 (e)
45.40 N, 04.05 W
(e) 45.58 N, 04.34 W
At 1640 hours, an aircraft was sighted at 5,000 metres. It had closed to 3,000 metres when it was recognised to be a Sunderland.

At 2,500 metres, Malaspina opened intense antiaircraft fire with her machine guns. The aircraft appeared to hesitate for a while, then went into the attack and dropped five bombs from a height of 200 metres. One of the Italian machine gunners claimed to have sighted a machine gunner on the aircraft slumping in his seat.

This was Sunderland 'J' of 10 Squadron (RAAF) piloted by Flight Lieutenant J. Costello. It had sighted the submarine from a distance of 15 miles. Actually four depth-charges were dropped from a height of 200 feet , two set at a depth of 100 feet and two to 150 feet. It also machine-gunned the submarine with 70 rounds (rear gun: 50 rounds, port midship's turret: 20 rounds). The depth charges are reported to have missed the submarine by 40 feet fore and aft the conning tower on the port side.

Malaspina had escaped damage and dived.
Giuliano Prini28 Jun 1941133044.39 N, 03.32 W
At 1330 hours, two large Spanish fishing vessels were sighted, one of them was Nuevo Soledad (106 GRT, built 1931) from Aviles. The submarine avoided them.
Giuliano Prini29 Jun 1941During the day, Malaspina was ordered by BETASOM to proceed south on 12°00' W meridian to 33°05' N, 11°45' W (Italian Grid 3972/51).
Giuliano Prini30 Jun 1941211543.48 N, 12.04 W
At 2115 hours, Malaspina sighted Morosini and exchanged recognition signals.
Giuliano Prini30 Jun 19411045At 1045 hours, BETASOM had ordered the submarines to the following positions:

Torelli in 2533/36 (36°58'N, 12°30'W)
Morosini in 2511/33 (36°30'N, 13°20'W)
Cappellini in 8511/66 (35°58'N, 14°00'W)
Da Vinci in 8511/33 (35°30' N, 13°20' W)
Baracca in 8533/31 (35°10'N, 12°30'W)
Malaspina in 3972/51 (33°00'N, 11°45'W)

Malaspina proceeded.
Giuliano Prini2 Jul 1941184536.43 N, 12.22 W
At 1525 hours, a steamer was sighted proceeding at 13 knots. At 1800 hours, Malaspina submerged to attack.

At 1845 hours, she surfaced and stopped her with a warning shot.

She was Argentinian steamer Rio Grande (687 GRT, built 1920) on a voyage from Lisbon to Buenos Aires. She was ordered to send a boat with her papers. They proved to be in order and she was released.
Giuliano Prini3 Jul 1941111535.14 N, 11.26 W
At 1115 hours, a destroyer was observed at a distance of 8,000 metres. Malaspina dived and was not detected.
Giuliano Prini7 Jul 19411500-175034.10 N, 09.38 W
(o) Approximately.
At 1500 hours, a vessel was sighted. It was at initially thought to be an armed merchant cruiser.

At 1750 hours, Malaspina submerged to carry an attack, only to identify the vessel as the Spanish Ciudad De Alicante (2,434 GRT, built 1930) from Valencia.
Giuliano Prini7 Jul 1941200534.10 N, 09.38 W
At 1715 hours, BETASOM ordered the submarines to the following positions:

Torelli in 9672/32 (34°15'N, 11°25'W)
Da Vinci in 9672/34 (34°35'N, 11°25'W)
Baracca in 9672/12 (34°15'N, 11°05'W)
Malaspina in 9697/42 (34°15'N, 10°35'W).

At 2005 hours, a large fishing vessel was sighted but no action was taken, as a four-engine bomber appeared shortly after. It looked like a Boeing aircraft and the submarine dived.
Giuliano Prini8 Jul 1941160033.13 N, 10.41 W
At 1100 hours, BETASOM ordered the submarines to the following positions:

Bianchi in 2772/11 (36°05' N, 11°05' W)
Torelli in 8597/61 (35°05' N, 10°55' W)
Morosini in 8597/34 (35°35' N, 10°25' W)
Baracca in 9697/11 (34°05' N, 10°05' W)
Malaspina in 3997/54 (33°35' N, 10°45' W)
Da Vinci in 9697/25 (34°15' N, 10°45' W) (the BETASOM diaries give the position as 35°55' N, 19°15' W but this is a typographical error).

At 1608 hours, a destroyer was sighted at a distance of 10,000 metres. Malaspina dived.
Giuliano Prini10 Jul 1941Malaspina was ordered by BETASOM to proceed to 36°55' N, 12°55' W.
Giuliano Prini11 Jul 1941113035.18 N, 13.25 W
Malaspina received an order from BETASOM to proceed at 10 knots to 34°05' N, 17°05' W.

At 1130 hours, a steamer was sighted and she submerged for the attack. This was the Portuguese Quanza (6,657 GRT, built 1929) from Funchal (Madeira) and the attack was aborted.
Giuliano Prini12 Jul 1941Malaspina received an order from BETASOM to proceed to 36°25' N, 22°05' W to form a barrage line with three other submarines (Bianchi, Morosini and Torelli).
Giuliano Prini15 Jul 1941011035.51 N, 25.31 W
At 2215 hours on 14th July, a steamer was sighted in 36°06' N, 21°21' W. Malaspina dived and followed her submerged.

At 2325 hours, the submarine surfaced at a distance of 3,000 metres to seek a position of attack ahead of her target. At 2351 hours, a radio signal was intercepted leaving little doubt that Malaspina had been sighted. The vessel now turned away and appeared to put her best speed to escape from her pursuer and this was a little over 10 knots.

At 0110 hours, the submarine fired a pair of torpedoes (one 533mm, S.I. 270 type, one 450mm, W 200 type) from her bow tubes at a distance of 700 metres. Before the torpedoes reached their target, T.V. Prini ordered the firing of a third torpedo (533mm, S.I. 270 type). Two torpedoes were seen to hit, both of the 533mm type. The first hit amidship, the second appeared to hit the engine room. The vessel broke in two and sank in three minutes. The 450mm torpedo was observed to have an irregular course and apparently missed ahead.

This was the Greek Nikoklis (3,576 GRT, built 1921) detached from convoy OG.67d.

Seventeen were killed and eleven survived. Prini thought they were picked up by the Spanish vessels Campeche and Campero (this was an error). In fact, thirteen survivors reached Cape Juby (Morocco), but two died before they landed. They were later brought to Las Palmas by a Spanish steamer.
Giuliano Prini17 Jul 19411824
1700 (e)
30.48 N, 18.26 W
(e) 30.44 N, 17.33 W
At 1645 hours, in 30°51' N, 17°16' W, a steamer was sighted in the mist at a close distance, steering a course almost parallel to the submarine.

At 1735 hours, Malaspina submerged to carry out an attack.

At 1824 hours, T.V. Prini ordered the firing of a torpedo (533mm, S.I. 270 type) from a stern tube (no. 8) at a distance of 1,000 metres. For a few seconds, the torpedo did not completely leave the tube and, when it finally did, the delay resulted in a miss.

At 1837 hours, Malaspina had reverted course and fired a torpedo from a bow tube (533mm, S.I. 270 type). It hit the vessel in no.5 hold. T.V. Prini took his submarine down to 40 metres to listen to the hydrophones.

This was the British Guelma (4,402 GRT, built 1928, Master W.G. Taylor) detached from convoy O.B.337 and in ballast, on passage from Funchal (Madeira) to Freetown.

At 1900 hours, Malaspina resurfaced to observe her victim still floating but down by the stern. The vessel had made an SOS. The crew was abandoning ship and about thirty survivors were seen in lifeboats.

At 1942 hours, the submarine fired a third torpedo (450mm, W 200 type), this time from a stern tube and at a distance of 1,000 metres. It had an irregular course and missed astern.

At 2002 hours, a fourth torpedo (533mm, S.I. type) was fired from a stern tube. It hit amidship. The vessel rapidly sank stern first.

All forty-one members of her crew and two Portuguese stowaways were rescued by the British submarine HMS Thunderbolt on 18th July.
Giuliano Prini18 Jul 1941163030.07 N, 14.22 W
At 1630 hours, a steamer was sighted at a distance of 5,000 metres.

At 1730 hours, Malaspina submerged for an attack.

At 1820 hours, she was identified as the Spanish Miraflores (3,209 GRT, built 1919) from Bilbao and the attack was aborted.
Giuliano Prini19 Jul 19412245At 2245 hours, a signal from the submarine Bagnolini was intercepted. It reported the discovery of a convoy and Malaspina altered course to intercept.
Giuliano Prini20 Jul 19410600At 0600 hours, Malaspina received an order to proceed to 34°35' N, 13°45' W. This was reached at 2200 hours but was then ordered to 33°45' N, 14°35' W.
Giuliano Prini21 Jul 1941060032.45 N, 14.35 W
At 0500 hours, Malaspina received an order to proceed to 32°45' N, 15°15' W. This was reached at 2100 hours.
Giuliano Prini22 Jul 1941Dawn32.45 N, 15.15 W
At dawn, Malaspina received an order to proceed to 29°55' N, 13°05' W.

At 2300 hours, the submarine received the order frpm BETASOM to operate up to the limit of autonomy in a square delimited by the parallels 34° and 35° N and the meridians 14° and 15° W.
Giuliano Prini24 Jul 1941014534.32 N, 14.33 W
At 2200 hours on 23rd July, Malaspina was ordered to proceed to 35°35' N, 12°35' W, to intercept a convoy reported by Bagnolini.

At 0145 hours on 24th July, searchlights were sighted scanning the sea, especially toward the wake of the submarine proceeding on the surface. At 0155 hours, T.V. Prini believing his submarine discovered by the enemy's hydrophones, took her down to 80 metres.

At 0245 and 0248 hours, depth charges were heard. Motors were stopped to observe the maximum silence.

At 1350 hours, Malaspina returned to periscope depth to observe that the enemy vessels were gone.
Giuliano Prini25 Jul 1941The submarine was ordered to 35°45' N, 11°25' W. The position was reached at 2000 hours on 26th July.
Giuliano Prini27 Jul 1941042035.45 N, 11.25 W
A steamer was sighted steering to the NE. The submarine closed to 1,500 metres but T.V. Prini could not determine her nationality. However, she was well illuminated according to International regulations and he believed she was probably Portuguese.
Giuliano Prini31 Jul 1941094538.04 N, 11.23 W
At 0945 hours, a steamer, who must have left Lisbon, was sighted at 4,000 metres steering 260°. Malaspina could not close because of heavy seas and as she was short of fuel, the chase was abandoned.
Giuliano Prini2 Aug 1941010041.10 N, 11.24 W
At 0100 hours, an illuminated passenger ship was sighted proceeding toward Vigo.
Giuliano Prini3 Aug 1941020044.12 N, 09.12 W
At 0200 hours, a German U-boat was sighted at a distance of 6-7,000 metres, coming from the direction of Cape Finisterre (possibly U-66?). Malaspina turned away.
Giuliano Prini10 Sep 1941
1100 (e)
(e) 46º23’ N, 11º22’ W
At 1100 hours, Sunderland 'U' (W3986) of 10 Squadron (RAAF), piloted by Flight Lieutenant A.G.H. Wearne, was flying at an altitude of 1,000 feet when a U-boat was sighted at about 1,000 yards, bearing 20°, on the port bow. She was steering 260° at 8 knots. Within about 25 seconds, an attack was made from astern with four 450-lb depth charges, two set to 50 feet and two to 100 feet, but the third hung up. The first fell abaft the conning tower, the second near the bows and a third at about 140 feet ahead. The Observer sighted the U-boat appearing to be stationary under the water and then disappeared without leaving any bubbles. The aircraft flew over the area for the next two and half hours but sighted nothing. It is likely that Malaspina was sunk in this attack as she was supposed to be steering 270° on the 45°40' N parallel. There were no survivors. Seven officers and fifty-three ratings perished. On 24th September 1941, a German aircraft reported seeing two ships sunk and a third set afire from a convoy which had sailed from Gibraltar on 17th September 1941 in an area where no ships were reported sunk by Italian or German submarines. At the time, it was thought that these were hit by Malaspina, but this story can be attributed to the German pilot's error. T.V. Prini was posthumously awarded the Medaglia d'Oro.

All Italian submarines