Italian submarines in World War Two
Italian Commanders
Antonio Dotta
| Born | 11 Aug 1904 | Fossano (Cuneo) |
| Ranks
Decorations
|
Career information
From 20.04.1937, served as Second in Command to C.F. Primo Longobardo in 3° Gruppo (Messina).SERPENTE (T.V. C.O.): from 28.10.1940 to 01.02.1941.
DIASPRO (T.V. C.O.): from 13.02.1941 to 22.11.1942.
Promoted to C.C. in July 1941).
GIOVANNI BAUSAN (C.C. C.O.): from 13.02.1942 to 26.03.1942.
SERPENTE (C.C. C.O.): from 01.12.1942 to 04.03.1943.
RUGGIERO SETTIMO (C.C. C.O.): from 05.03.1943 to 31.12.1943.
MARCANTONIO BRAGADINO (C.C. C.O.): from 22.03.1944 to end of war.
In 1944: Assistant to Head of COMANDO SUPERIORE SOMMERGIBILI.
Commands listed for Antonio Dotta
| Submarine | Type | Rank | From | To |
|---|---|---|---|---|
| Serpente (ex-Nautilus) (SE) | Coastal / Sea going | T.V. | 28 Oct 1940 | 1 Feb 1941 |
| Giovanni Bausan (BN) | Ocean going | C.C. | 13 Feb 1942 | 26 Mar 1942 |
| Diaspro (DS) | Coastal / Sea going | T.V. | 13 Feb 1941 | 30 Nov 1942 |
| Serpente (ex-Nautilus) (SE) | Coastal / Sea going | C.C. | 1 Dec 1942 | 4 Mar 1943 |
| Ruggiero Settimo (RS) | Ocean going | C.C. | 5 Mar 1943 | 31 Dec 1943 |
| Marcantonio Bragadino (BG) | Minelaying | C.C. | 22 Mar 1944 | Aug 1945 |
Ships hit by Antonio Dotta
No ships hit by this Commander.War patrols listed for Antonio Dotta
| Submarine | Date | Time | Port | Arr. date | Arr. time | Arr. port | Miles | Description | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Serpente (ex-Nautilus) (SE) | 5 Nov 1940 | 0835 | Taranto | 5 Nov 1940 | 1705 | Taranto | 35 | Exercises. | ||
| Serpente (ex-Nautilus) (SE) | 9 Nov 1940 | 0835 | Taranto | 9 Nov 1940 | 1710 | Taranto | 31 | Exercises. | ||
| Serpente (ex-Nautilus) (SE) | 11 Nov 1940 | 0805 | Taranto | 11 Nov 1940 | 1350 | Taranto | 21,2 | Exercises. | ||
| Serpente (ex-Nautilus) (SE) | 18 Nov 1940 | 0820 | Taranto | 18 Nov 1940 | 1540 | Taranto | 40 | Exercises. | ||
| Serpente (ex-Nautilus) (SE) | 19 Nov 1940 | 1010 | Taranto | 19 Nov 1940 | 1210 | Taranto | 1 | Exercises. | ||
| Serpente (ex-Nautilus) (SE) | 29 Nov 1940 | 0655 | Taranto | 29 Nov 1940 | 1530 | Taranto | 47 | Exercises. | ||
| Serpente (ex-Nautilus) (SE) | 30 Nov 1940 | 1155 | Taranto | 1 Dec 1940 | 1755 | Augusta | 301 | Passage Taranto-Augusta. | ||
| 1. | Serpente (ex-Nautilus) (SE) | 18 Dec 1940 | 1445 | Augusta | 25 Dec 1940 | 1135 | Augusta | 674,4 | Patrolled east of Malta from 35°30'N, 16°20'E on meridian to 10 miles south, on a patrol line with Dessié. | |
| 20 Dec 1940 | 0102 | 35° 30'N, 16° 20'E | At 0100 hours, a large enemy formation was sighted at 4-5,000 metres in very rough seas (Grecale wind). It was estimated to be three cruisers and a destroyer. The range was closing. At 0102 hours, Serpente fired two torpedoes (533mm) from bow tubes at a distance of 2,500-3,000 metres, aimed at a cruiser and possibly a TRIBAL class destroyer. The submarine dived immediately after. She had reached a depth of 35 metres when a loud explosion was heard, indicating at least one hit and perhaps two. This was almost certainly HMS Calcutta, three sloops and one destroyer who were about 80 miles east of Malta at the time but did not observe any attack. It has sometimes been reported that the destroyer Hyperion was sunk in this attack, but this is an error: Hyperion was reported damaged by a mine at 0157 hours on 22nd December 1940 (24 miles east of Cape Bon or in 37°04' N, 11°30' E) and finally sunk at 0500 hours on the 22nd by HMS Janus. | |||||||
| 22 Dec 1940 | 0102 | 35° 30'N, 16° 20'E (0) Approximately. | At 0102 hours, two warships believed to be submarine chasers were sighted. Serpente dived and took evasive action, but apparently was undetected and surfaced three hours later. | |||||||
| Serpente (ex-Nautilus) (SE) | 29 Dec 1940 | 0845 | Augusta | 29 Dec 1940 | 1050 | Augusta | 3,9 | Exercises. | ||
| 2. | Serpente (ex-Nautilus) (SE) | 14 Jan 1941 | 1715 | Augusta | 28 Jan 1941 | 1030 | Augusta | 1419,7 | Patrolled north of Cyrenaica, from 33°10'N, 22°10'E on course 108° for 205 miles then 060° for 40 miles then 35°40'N, 20°40'E. Encountered rough weather but uneventful, except for hearing distant explosions. | |
| Serpente (ex-Nautilus) (SE) | 29 Jan 1941 | 0945 | Augusta | 29 Jan 1941 | 1200 | Augusta | 3,4 | Trials. | ||
| Diaspro (DS) | 14 Feb 1941 | 0829 | Cagliari | 14 Feb 1941 | 1215 | Cagliari | 28,5 | Exercises. | ||
| Diaspro (DS) | 6 Mar 1941 | 0010 | Cagliari | 7 Mar 1941 | 0830 | Naples | 271 | Passage Cagliari-Naples. | ||
| Diaspro (DS) | 18 Apr 1941 | 0911 | Naples | 18 Apr 1941 | 1841 | Naples | 52 | Exercises. | ||
| Diaspro (DS) | 21 Apr 1941 | 0825 | Naples | 21 Apr 1941 | 1148 | Naples | 35 | Exercises. | ||
| Diaspro (DS) | 23 Apr 1941 | 0800 | Naples | 23 Apr 1941 | 1811 | Naples | 46 | Exercises. | ||
| Diaspro (DS) | 28 Apr 1941 | 0948 | Naples | 28 Apr 1941 | 1705 | Naples | 39 | Exercises. | ||
| Diaspro (DS) | 30 Apr 1941 | 0835 | Naples | 30 Apr 1941 | 1255 | Naples | 29 | Exercises. | ||
| Diaspro (DS) | 2 May 1941 | 0837 | Naples | 2 May 1941 | 1407 | Naples | 26 | Exercises. | ||
| Diaspro (DS) | 6 May 1941 | 1940 | Naples | 7 May 1941 | 0050 | Naples | 30 | Exercises. | ||
| Diaspro (DS) | 12 May 1941 | 0810 | Naples | 13 May 1941 | 1810 | Cagliari | 300 | Passage Naples-Cagliari. | ||
| 3. | Diaspro (DS) | 21 May 1941 | 0440 | Cagliari | 23 May 1941 | 1120 | Cagliari | 314 | Patrolled east of La Galite in 37°40'N, 09°50'E, with Corallo in an adjacent area, to intercept Force H reported to have sailed from Gibraltar. Uneventful. Sighted only an aircraft and heard H.E. | |
| 4. | Diaspro (DS) | 5 Jun 1941 | 2315 | Cagliari | 12 Jun 1941 | 1150 | Cagliari | 824,5 | Patrolled in Western Mediterranean from 37°54'N, 08°00'E on course 265° to 06°00' then (between Sardinia and Bone) against an expected convoy from Gibraltar. Uneventful. | |
| 5. | Diaspro (DS) | 2 Jul 1941 | 2119 | Cagliari | 12 Jul 1941 | 1200 | Cagliari | 991,5 | Patrolled in Western Mediterranean within 20 miles from 37°20'N, 02°40'E, with Corallo in an adjacent area, against an expected force from Gibraltar Uneventful. | |
| 6. | Diaspro (DS) | 16 Jul 1941 | 1725 | Cagliari | 19 Jul 1941 | 0805 | Cagliari | 429,5 | Patrolled in Western Mediterranean on parallel between 37°30'N and 37°40'N, 06°00'E to 05°00'E, with Alagi in an adjacent area, against an expected force from Gibraltar. Uneventful. | |
| 7. | Diaspro (DS) | 21 Jul 1941 | 1458 | Cagliari | 24 Jul 1941 | 0745 | Cagliari | 352 | Patrolled off Cape Bougaroni, on parallel from 37°30'N, 06°00'E to 05°00'E, with Alagi in an adjacent area. All torpedoes expended. | |
| 22 Jul 1941 | 2307 2310 (e) | 38° 10'N, 5° 30'E | At 1005 hours, as Cape Bougaroni was in sight, information was received that, at 0850 hours, an aircraft had spotted a large naval force in 38°26' N, 03°25' E. At 1130 hours, a signal from MARICOSOM revealed that a force of one battleship, one aircraft carrier and four destroyers had been sighted at 0920 hours in 38°26' N, 03°35' E, steering 090° at 18 knots. T.V. Antonio Dotta estimated that this force could be 45 miles north of his position, at 1630 hours. He immediately altered course, expecting to reach the interception course at 1600 hours. At 1440 hours, as Diaspro was proceeding northward, an order from MARICOSOM gave her freedom of action to move outside her patrol area to intercept the enemy. At 1920 hours, a new signal from MARICOSOM reported the enemy's position at 1545 hours as 75 miles north of Cape Bougaroni, steering 090° at 20 knots. It was now described as one battleship, one aircraft carrier and seven destroyers. However, this position was only 7 miles from Diaspro at 1545 hours and, since no hydrophone noises had been picked up, Dotta estimated that the position provided by MARICOSOM was erroneous. At 1950 hours, bomb explosions could be heard to the west. At 2015 hours, Diaspro was informed by MARICOSOM that an enemy naval force had been reported at 1505 hours, 75 miles north of Cape Sigli, consisting of a battleship, an aircraft carrier, four cruisers and five destroyers. It was not clear if this was the same force or a different one. At 2200 hours, the submarine submerged briefly to listen with the hydrophones and detected numerous noises westward. All forward tubes were readied as Corallo proceeded on the surface. At 2258 hours, shadows were sighted and, two minutes later, the diesels were stopped and the electric motors switched on for a silent approach. At 2304 hours, a naval force of eight to ten ships was sighted in the process of reverting course from 090° to 270°. It could now be identified as one or two destroyers leading the formation, followed by four cruisers, other destroyers, a battleship, an aircraft carrier and one or two destroyers bringing up the rear. The speed was estimated at 10 knots and distances varied from 1,000 to 1,300 metres. At 2307 hours, a full salvo of four torpedoes was fired from the bow tubes aimed at the cruisers. They missed. T.V. Dotta believed that the very visible phosphorescence of the torpedo tracks had enabled the enemy to take avoiding action. At 2309 hours, Diaspro had reverted course to fire two stern torpedoes aimed at the battleship and aircraft carrier from 700 metres and then crash-dived. Two explosions were heard about a minute after firing leading Dotta to believe that he had scored one or perhaps both the major units. This was Force H covering the SUBSTANCE convoy, with the battle cruiser HMS Renown, the battleship HMS Nelson, the light cruiser HMS Hermione, the aircraft carrier HMS Ark Royal and screened by destroyers. One of these destroyers, HMAS Nestor, stationed on the starboard wing, reported two torpedoes, which were avoided. Just prior to this, two explosions had been heard which were probably torpedoes from Diaspro's first salvo, either detonating prematurely or hitting the sea bed. The destroyer now obtained an ASDIC contact at 1,700 yards and dropped a pattern of five depth charges set at medium depth, which exploded as the submarine had reached a depth of 40 metres. Another pattern of six depth charges was dropped on a second run and the same number on a third run. Nothing was seen, but there was a strong smell of oil. In the submarine, about thirty depth charges were heard from 2312 to 0050 hours on 23rd July. Although, the first pattern was close, the remainder were not and the submarine was only slightly damaged. Diaspro had dropped to a depth of 138 metres before stabilising at 116 metres. At 0330 hours, she made an enemy report and at 0557 hours sighted a squadron of destroyers apparently hunting her. Diaspro dived and proceeded to Cagliari. This is one of the rare instances, when an Italian submarine returned from a patrol in the Mediterranean having expended all her torpedoes. | |||||||
| 8. | Diaspro (DS) | 30 Jul 1941 | 2025 | Cagliari | 6 Aug 1941 | 0650 | Cagliari | 432 | Patrolled off Cape Bougaroni on 6° E meridian. At 1335 hours on 3rd August, Diaspro was informed of a convoy of eight ships in 37°20'N, 10°45'E, on course 270°, 10 knots and moved westward with the intention to carry out a night attack. Sighted only French ships. | |
| Diaspro (DS) | 15 Aug 1941 | 0815 | Cagliari | 15 Aug 1941 | 1320 | Cagliari | Exercises, escorted by the minesweeper Balear. | |||
| Diaspro (DS) | 22 Aug 1941 | 0858 | Cagliari | 22 Aug 1941 | 1335 | Cagliari | 22,5 | Exercises. | ||
| Diaspro (DS) | 23 Aug 1941 | 1320 | Cagliari | 23 Aug 1941 | 1816 | Cagliari | 27 | Exercises. | ||
| 9. | Diaspro (DS) | 24 Aug 1941 | 2200 | Cagliari | 27 Aug 1941 | 1410 | Cagliari | 307 | Patrolled west of La Galite within 10 miles from 37°30'N, 07°40'E. | |
| 25 Aug 1941 | 0910 | 37° 48'N, 8° 00'E | At 0010 hours, a submarine believed to be Aradam, was sighted. As a precaution, Diaspro proceeded submerged to her patrol area, which was 25 miles away at the time and again sighted the submarine at 1013 hours. | |||||||
| 10. | Diaspro (DS) | 12 Sep 1941 | 1355 | Cagliari | 15 Sep 1941 | 1050 | Cagliari | 359 | Patrolled east of La Galite between 37°32'N and North African coast, 08°56'E and 09°20'E. | |
| 12 Sep 1941 | 1855 1852 (e) | 38° 42'N, 9° 30'E | At 1855 hours, Diaspro was mistaken for an enemy submarine and attacked by Cant Z.506 no. 3 of 188^ Squadriglia based at Elmas. The aircraft dropped two bombs set to explode at a depth of 15 meters. The submarine was shaken, but escaped by diving to 70 meters. The aircraft observer G.M. Paolo Tavolato was reprimanded. | |||||||
| 11. | Diaspro (DS) | 16 Sep 1941 | 2355 | Cagliari | 17 Sep 1941 | 2145 | Cagliari | 184 | Sailed for patrol off SE of Minorca to form a patrol line with Serpente but then recalled. Uneventful. | |
| 17 Sep 1941 | 1240 | At 1240 hours, the submarine Serpente was sighted at a distance 8,000 metres on opposite course. Diaspro had received the recall order but Serpente had not yet. | ||||||||
| 12. | Diaspro (DS) | 25 Sep 1941 | 1835 | Cagliari | 2 Oct 1941 | 1100 | Cagliari | 814 | Sailed with Axum, Aradam and Serpente for patrol between 39°10'N and 39°50'N, and between 06°40'E and 07°00'E on a patrol line with them. On 27th September, was moved 100 miles south (in 38°25'N then moved to 37°30'N, 07°00'E on 28th September) then off Cape Bougaroni. | |
| 29 Sep 1941 | 0617 0612 (e) | 37° 32'N, 6° 45'E | At 0617 hours, in dense rain showers, a destroyer was suddenly sighted at a distance of 250 metres. Almost at the same another large shadow appeared at 2,500-3,000 metres. Diaspro fired her two stern tubes and crash-dived. After 3 minutes a loud explosion was heard as the submarine was at a depth of 30 metres. This was the destroyer HMS Gurkha, on the port side of the screen of HMS Ark Royal, HMS Prince of Wales and HMS Rodney, covering the HALBERD convoy. The destroyer sighted the torpedo wakes and managed to avoid them. At 0622 hours, she heard two explosions, which were probably the torpedoes reaching the end of their run. The Dutch destroyer HrMs Isaac Sweers joined the hunt, but did not drop any depth-charges. HMS Gurkha got a contact at 0810 hours, in 37°26' N, 07°14' E and ,dropped fourteen depth-charges. With the fleet proceeding at 17 knots on an easterly course, it could not have been the same submarine. | |||||||
| 1 Oct 1941 | 0814 | (0) Near La Galite. | At 0814 hours, a submarine believed to be Aradam was sighted. | |||||||
| 2 Oct 1941 | 0700 | (0) Near Cagliari. | At 0700 hours, the submarine Serpente was sighted. | |||||||
| 13. | Diaspro (DS) | 16 Oct 1941 | 2355 | Cagliari | 21 Oct 1941 | 1225 | Cagliari | 540 | Sailed with Aradam, Serpente, Turchese and Alagi for patrol north of Cape de Fer between 37°30'N and 37°40'N, and between 06°40'E and 07°20'E on a patrol line with them (the four submarines were spread from 37°10'N to 37°50'N, each occupying a zone 10 miles deep). | |
| 17 Oct 1941 | 0715-1010 | 38° 27'N, 8° 28'E | At 0700 hours, the submarine Serpente was sighted at 8,000 metres and remained in sight until 1010 hours. | |||||||
| 20 Oct 1941 | 1900 1650 (e) | 38° 05'N, 8° 00'E | At 1900 hours, three vessels were sighted at over 10,000 metres. They were recognised as destroyers, two of the FEARLESS class and one of the JERVIS class. These were probably the light cruisers HMS Aurora and HMS Penelope and the destroyers HMS Lance and HMS Lively (Force K) proceeding to Malta. Diaspro could not close to carry out an attack. | |||||||
| 14. | Diaspro (DS) | 24 Oct 1941 | 2305 | Cagliari | 3 Nov 1941 | 1415 | Cagliari | 972 | Sailed for patrol with Alagi, between 37°15'N and 37°30'N and, and between 05°20'E and 06°00'E. Uneventful. Heard only H.E. | |
| Diaspro (DS) | 12 Nov 1941 | 1845 | Cagliari | 14 Nov 1941 | 0920 | Messina | 345,5 | Passage Cagliari-Messina, surfaced at 9 knots. | ||
| Diaspro (DS) | 17 Nov 1941 | 1035 | Messina | 20 Nov 1941 | 1435 | Pola | 680 | Passage Messina-Pola, surfaced at 9 knots. The submarine was informed that she might encounter a convoy escorted by the torpedo boat Libra at 0100 hours on the 18th. | ||
| Diaspro (DS) | 22 Nov 1941 | 0830 | Pola | 22 Nov 1941 | 1510 | Fiume | 62 | Passage Pola-Fiume. | ||
| Diaspro (DS) | 26 Feb 1942 | 0910 | Fiume | 26 Feb 1942 | 1800 | Fiume | 43 | Trials escorted by the auxiliary Abbazia. | ||
| Giovanni Bausan (BN) | 18 Mar 1942 | 1410 | Fiume | 18 Mar 1942 | 1700 | Fiume | 25 | Trials. | ||
| Giovanni Bausan (BN) | 25 Mar 1942 | 0955 | Fiume | 25 Mar 1942 | 1600 | Pola | 61 | Passage Fiume-Pola, escorted by the torpedo boat Medici. | ||
| Diaspro (DS) | 2 Apr 1942 | 0950 | Fiume | 2 Apr 1942 | 1830 | Fiume | 59 | Trials, escorted by the torpedo boat T.7. | ||
| Diaspro (DS) | 9 Apr 1942 | 1610 | Fiume | 9 Apr 1942 | 1625 | Sussa (Fiume) | 2 | Passage Fiume-Sussa. | ||
| Diaspro (DS) | 11 Apr 1942 | 0850 | Sussa (Fiume) | 11 Apr 1942 | 1900 | Sussa (Fiume) | 19 | Exercises, escorted by the torpedo boat Insidioso and the auxiliary Jadera. | ||
| Diaspro (DS) | 15 Apr 1942 | 1240 | Sussa (Fiume) | 16 Apr 1942 | 0030 | Sussa (Fiume) | 63 | Exercises, escorted by the torpedo boat Insidioso and the auxiliary Trau. | ||
| Diaspro (DS) | 17 Apr 1942 | 1240 | Sussa (Fiume) | 17 Apr 1942 | 1730 | Sussa (Fiume) | 38 | Exercises with the submarine Bandiera, escorted by the auxiliary Trau. | ||
| Diaspro (DS) | 20 Apr 1942 | 2035 | Sussa (Fiume) | 21 Apr 1942 | 0115 | Sussa (Fiume) | 36 | Exercises, escorted by the auxiliary Trau. | ||
| Diaspro (DS) | 22 Apr 1942 | 1225 | Sussa (Fiume) | 22 Apr 1942 | 2015 | Sussa (Fiume) | 28 | Exercises, escorted by the torpedo boat T.3 and the auxiliary Trau. | ||
| Diaspro (DS) | 24 Apr 1942 | 1400 | Sussa (Fiume) | 25 Apr 1942 | 0035 | Sussa (Fiume) | 68 | Exercises. | ||
| Diaspro (DS) | 25 Apr 1942 | 0830 | Sussa (Fiume) | 25 Apr 1942 | 1110 | Sussa (Fiume) | 9 | Exercises. | ||
| Diaspro (DS) | 27 Apr 1942 | 0925 | Sussa (Fiume) | 27 Apr 1942 | 1240 | Sussa (Fiume) | 9 | Exercises. | ||
| Diaspro (DS) | 27 Apr 1942 | 2015 | Sussa (Fiume) | 28 Apr 1942 | 0040 | Sussa (Fiume) | 31 | Exercises with the submarines Bandiera and Giada, escorted by the torpedo Audace. | ||
| Diaspro (DS) | 1 May 1942 | 0650 | Sussa (Fiume) | 1 May 1942 | 1235 | Sussa (Fiume) | 32 | Exercises, escorted by the torpedo boat Audace. | ||
| Diaspro (DS) | 1 May 1942 | 2020 | Sussa (Fiume) | 2 May 1942 | 0110 | Sussa (Fiume) | 28 | Exercises, escorted by the torpedo boat Audace. | ||
| Diaspro (DS) | 4 May 1942 | 1230 | Sussa (Fiume) | 5 May 1942 | 0200 | Sussa (Fiume) | 64 | Exercises with the submarine Manara, escorted by the torpedo boat Audace. | ||
| Diaspro (DS) | 6 May 1942 | 0920 | Sussa (Fiume) | 6 May 1942 | 1225 | Sussa (Fiume) | 18 | Exercises. | ||
| Diaspro (DS) | 6 May 1942 | 1420 | Sussa (Fiume) | 6 May 1942 | 1710 | Sussa (Fiume) | 17 | Exercises. | ||
| Diaspro (DS) | 8 May 1942 | 1410 | Sussa (Fiume) | 8 May 1942 | 1920 | Sussa (Fiume) | 17 | Exercises with the submarine Manara, escorted by the auxiliary Jadera. | ||
| Diaspro (DS) | 12 May 1942 | 1310 | Sussa (Fiume) | 13 May 1942 | 0200 | Sussa (Fiume) | 60 | Exercises with the submarines Giada and Bandiera, escorted by the torpedo boat T.3. | ||
| Diaspro (DS) | 14 May 1942 | 1100 | Sussa (Fiume) | 15 May 1942 | 0140 | Sussa (Fiume) | 68 | Exercises with the submarine Bandiera, escorted by the torpedo boat Insidioso. | ||
| Diaspro (DS) | 16 May 1942 | 0650 | Sussa (Fiume) | 16 May 1942 | 1350 | Sussa (Fiume) | 24,5 | Exercises. | ||
| Diaspro (DS) | 27 Jun 1942 | 0510 | Fiume | 27 Jun 1942 | 1800 | Venice | 131 | Passage Fiume-Venice to test the "Silenta" apparatus. | ||
| Diaspro (DS) | 30 Jun 1942 | 1020 | Venice | 30 Jun 1942 | 1340 | Venice | 13 | Exercises. | ||
| Diaspro (DS) | 1 Jul 1942 | 0950 | Venice | 1 Jul 1942 | 1430 | Venice | 11 | Exercises. | ||
| Diaspro (DS) | 4 Jul 1942 | 0520 | Venice | 4 Jul 1942 | 1900 | Fiume | 133 | Passage Venice-Fiume. | ||
| Diaspro (DS) | 5 Jul 1942 | 0920 | Fiume | 5 Jul 1942 | 1220 | Fiume | 11 | Exercises. | ||
| Diaspro (DS) | 15 Jul 1942 | 1030 | Fiume | 15 Jul 1942 | 1110 | Sussa (Fiume) | 1 | Passage Fiume-Sussa. | ||
| Diaspro (DS) | 16 Jul 1942 | 1426 | Sussa (Fiume) | 17 Jul 1942 | 0245 | Sussa (Fiume) | 46 | Exercises. | ||
| Diaspro (DS) | 20 Jul 1942 | 1500 | Sussa (Fiume) | 21 Jul 1942 | 0125 | Sussa (Fiume) | 34 | Exercises. | ||
| Diaspro (DS) | 22 Jul 1942 | 1305 | Sussa (Fiume) | 22 Jul 1942 | 2335 | Sussa (Fiume) | 31 | Exercises. | ||
| Diaspro (DS) | 24 Jul 1942 | 1300 | Sussa (Fiume) | 25 Jul 1942 | 0115 | Sussa (Fiume) | 48 | Exercises. | ||
| Diaspro (DS) | 28 Jul 1942 | 1235 | Sussa (Fiume) | 28 Jul 1942 | 1755 | Sussa (Fiume) | 26 | Exercises. | ||
| Diaspro (DS) | 30 Jul 1942 | 0735 | Sussa (Fiume) | 30 Jul 1942 | 1650 | Sussa (Fiume) | 72 | Exercises. | ||
| Diaspro (DS) | 31 Jul 1942 | 0300 | Sussa (Fiume) | 31 Jul 1942 | 1900 | Sussa (Fiume) | 46 | Exercises. | ||
| Diaspro (DS) | 3 Aug 1942 | 1315 | Sussa (Fiume) | 4 Aug 1942 | 0115 | Sussa (Fiume) | 50 | Exercises. | ||
| Diaspro (DS) | 5 Aug 1942 | 1235 | Sussa (Fiume) | 6 Aug 1942 | 0040 | Sussa (Fiume) | 52 | Exercises. | ||
| Diaspro (DS) | 7 Aug 1942 | 1230 | Sussa (Fiume) | 8 Aug 1942 | 0040 | Sussa (Fiume) | 57 | Exercises. | ||
| Diaspro (DS) | 11 Aug 1942 | 0935 | Sussa (Fiume) | 11 Aug 1942 | 1335 | Sussa (Fiume) | 14 | Exercises. | ||
| Diaspro (DS) | 13 Aug 1942 | 1425 | Sussa (Fiume) | 14 Aug 1942 | 0005 | Sussa (Fiume) | 56 | Exercises. | ||
| Diaspro (DS) | 17 Aug 1942 | 1430 | Sussa (Fiume) | 18 Aug 1942 | 0010 | Sussa (Fiume) | 56 | Exercises. | ||
| Diaspro (DS) | 19 Aug 1942 | 0735 | Sussa (Fiume) | 19 Aug 1942 | 0810 | Fiume | 2 | Passage Sussa-Fiume. | ||
| Diaspro (DS) | 26 Aug 1942 | 1330 | Fiume | 26 Aug 1942 | 1700 | Fiume | 13 | Trials. | ||
| Diaspro (DS) | 27 Aug 1942 | 0540 | Fiume | 27 Aug 1942 | 1845 | Venice | 127 | Passage Fiume-Venice. | ||
| Diaspro (DS) | 29 Aug 1942 | 0850 | Venice | 29 Aug 1942 | 1150 | Venice | 10 | Trials. | ||
| Diaspro (DS) | 2 Sep 1942 | 0700 | Venice | 2 Sep 1942 | 1450 | Pola | 78,5 | Passage Venice-Pola. | ||
| Diaspro (DS) | 5 Sep 1942 | 1200 | Pola | 5 Sep 1942 | 1920 | Pola | 43 | Exercises with the torpedo boat Fortunale in 44°45'N, 13°27'E. | ||
| Diaspro (DS) | 10 Sep 1942 | 1400 | Pola | 15 Sep 1942 | 1010 | Trapani | 950 | Passage Pola-Trapani. She was informed that she would probably cross the path of a German submarine (this was U-205) at 1400 hours on the 11th, and the submarine Micca at dawn on the 13th. | ||
| Diaspro (DS) | 24 Oct 1942 | 0730 | Trapani | 24 Oct 1942 | 1235 | Trapani | 31 | Exercises. | ||
| 15. | Diaspro (DS) | 7 Nov 1942 | 0145 | Trapani | 14 Nov 1942 | 1830 | Trapani | 1820,5 | Patrolled in 37°25'N, 10°15'E to attack an enemy convoy. On 8 November, moved to area between 37°00'N and 37°20'N, and between 06°00'E and 06°20'E. | |
| 8 Nov 1942 | 1158 | 35° 25'N, 10° 15'E | At 1158 hours, Diaspro collided with the submarine Alagi as they were proceeding submerge to their patrol areas. Diaspro was at a depth of 12 metres at the time and suffered only minor damages but Alagi had to return to base for repairs. | |||||||
| 12 Nov 1942 | 0505 | 36° 46'N, 5° 06'E | At 0456 hours, a large vessel was sighted at a distance of 1,200 metres. She was estimated doing 14 knots. At 0505 hours, Diaspro fired all four bow tubes (533mm, G7e type) at a range of 800 metres, adjusted for an enemy's speed of 10 knots as the initial speed appeared to have been overestimated. However, the torpedoes had just left the tubes when the vessel altered course to port and they missed. This was probably the Dutch liner Marnix Van St. Aldegonde (19,355 GRT, built 1930) who anchored off Cape Bouak at 0800 hours coming from Cape Aokas [36°38'45" N, 05°13'54" E] where she had taken refuge the previous day. At 0510 hours, the submarine had reverted and fired a single stern torpedo from a range of 1,500 metres. At 0513 hours, a double explosion was heard. No vessels reported being torpedoed at this time. | |||||||
| Diaspro (DS) | 16 Nov 1942 | 1905 | Trapani | 17 Nov 1942 | 2145 | Naples | 237 | Passage Trapani-Naples. | ||
| Diaspro (DS) | 20 Nov 1942 | 0800 | Naples | 20 Nov 1942 | 1150 | Naples | 10 | Exercises. | ||
| Diaspro (DS) | 25 Nov 1942 | 1500 | Naples | 26 Nov 1942 | 2017 | La Maddalena | 231 | Passage Naples-La Maddalena. | ||
| Serpente (ex-Nautilus) (SE) | 12 Feb 1943 | 0920 | Pola | 12 Feb 1943 | 1120 | Pola | 2,5 | Trials. | ||
| Serpente (ex-Nautilus) (SE) | 15 Feb 1943 | 0825 | Pola | 15 Feb 1943 | 1515 | Pola | 32 | Trials. | ||
| Serpente (ex-Nautilus) (SE) | 24 Feb 1943 | 0905 | Pola | 24 Feb 1943 | 2300 | Pola | 41 | Trials. | ||
| Serpente (ex-Nautilus) (SE) | 3 Mar 1943 | 0030 | Pola | 3 Mar 1943 | 0925 | Fiume | 65 | Passage Pola-Fiume with the torpedo boat Insidioso, escorted out by the torpedo boat T.3. | ||
| Ruggiero Settimo (RS) | 14 Mar 1943 | 0300 | Pola | 14 Mar 1943 | 1030 | Nazario Sauro (Fiume) | 57 | Passage Pola-Nazario Sauro, escorted by torpedo boat T.3. | ||
| Ruggiero Settimo (RS) | 15 Mar 1943 | 0915 | Fiume | 15 Mar 1943 | 2300 | Fiume | 51 | Exercises. | ||
| Ruggiero Settimo (RS) | 17 Mar 1943 | 1020 | Fiume | 18 Mar 1943 | 0030 | Fiume | 60 | Exercises. | ||
| Ruggiero Settimo (RS) | 19 Mar 1943 | 1045 | Fiume | 19 Mar 1943 | 1900 | Fiume | 34 | Exercises. | ||
| Ruggiero Settimo (RS) | 22 Mar 1943 | 1030 | Fiume | 22 Mar 1943 | 2310 | Fiume | 55 | Exercises. | ||
| Ruggiero Settimo (RS) | 24 Mar 1943 | 1250 | Fiume | 24 Mar 1943 | 2250 | Fiume | 47 | Exercises. | ||
| Ruggiero Settimo (RS) | 26 Mar 1943 | 1020 | Fiume | 26 Mar 1943 | 2345 | Fiume | 67 | Exercises. | ||
| Ruggiero Settimo (RS) | 29 Mar 1943 | 1310 | Fiume | 29 Mar 1943 | 1835 | Fiume | 25 | Exercises. | ||
| Ruggiero Settimo (RS) | 30 Mar 1943 | 1357 | Fiume | 30 Mar 1943 | 1722 | Fiume | 15 | Exercises. | ||
| Ruggiero Settimo (RS) | 31 Mar 1943 | 1125 | Fiume | 31 Mar 1943 | 2315 | Fiume | 59 | Exercises. | ||
| Ruggiero Settimo (RS) | 2 Apr 1943 | 1325 | Fiume | 3 Apr 1943 | 0045 | Fiume | 65 | Exercises. | ||
| Ruggiero Settimo (RS) | 5 Apr 1943 | 1145 | Fiume | 5 Apr 1943 | 2315 | Fiume | 72 | Exercises. | ||
| Ruggiero Settimo (RS) | 7 Apr 1943 | 1145 | Fiume | 7 Apr 1943 | 2330 | Fiume | 57 | Exercises. | ||
| Ruggiero Settimo (RS) | 9 Apr 1943 | 0920 | Fiume | 9 Apr 1943 | 2400 | Fiume | 76 | Exercises. | ||
| Ruggiero Settimo (RS) | 12 Apr 1943 | 1400 | Fiume | 12 Apr 1943 | 2310 | Fiume | 55 | Exercises. | ||
| Ruggiero Settimo (RS) | 14 Apr 1943 | 1030 | Fiume | 14 Apr 1943 | 2300 | Fiume | 92 | Exercises. | ||
| Ruggiero Settimo (RS) | 16 Apr 1943 | 1000 | Fiume | 17 Apr 1943 | 0020 | Fiume | 76 | Exercises. | ||
| Ruggiero Settimo (RS) | 19 Apr 1943 | 1400 | Fiume | 20 Apr 1943 | 0015 | Fiume | 53 | Exercises. | ||
| Ruggiero Settimo (RS) | 21 Apr 1943 | 1320 | Fiume | 22 Apr 1943 | 0020 | Fiume | 48 | Exercises. | ||
| Ruggiero Settimo (RS) | 23 Apr 1943 | 1300 | Fiume | 24 Apr 1943 | 0030 | Fiume | 60 | Exercises. | ||
| Ruggiero Settimo (RS) | 26 Apr 1943 | 1145 | Fiume | 27 Apr 1943 | 0045 | Fiume | 75 | Exercises. | ||
| Ruggiero Settimo (RS) | 28 Apr 1943 | 1315 | Fiume | 29 Apr 1943 | 0030 | Fiume | 67 | Exercises. | ||
| Ruggiero Settimo (RS) | 30 Apr 1943 | 1200 | Fiume | 1 May 1943 | 0210 | Fiume | 84 | Exercises. | ||
| Ruggiero Settimo (RS) | 3 May 1943 | 1340 | Fiume | 3 May 1943 | 2340 | Fiume | 60 | Exercises. | ||
| Ruggiero Settimo (RS) | 5 May 1943 | 1350 | Fiume | 6 May 1943 | 0035 | Fiume | 56 | Exercises. | ||
| Ruggiero Settimo (RS) | 7 May 1943 | 1440 | Fiume | 7 May 1943 | 2345 | Fiume | 41 | Exercises. | ||
| Ruggiero Settimo (RS) | 8 May 1943 | 1140 | Fiume | 8 May 1943 | 1340 | Fiume | 2 | Exercises. | ||
| Ruggiero Settimo (RS) | 10 May 1943 | 1315 | Fiume | 11 May 1943 | 0055 | Fiume | 56 | Exercises. | ||
| Ruggiero Settimo (RS) | 12 May 1943 | 1305 | Fiume | 13 May 1943 | 0140 | Fiume | 71 | Exercises. | ||
| Ruggiero Settimo (RS) | 14 May 1943 | 1444 | Fiume | 15 May 1943 | 0200 | Fiume | 58 | Exercises. | ||
| Ruggiero Settimo (RS) | 17 May 1943 | 1305 | Fiume | 18 May 1943 | 0520 | Fiume | 62 | Exercises. | ||
| Ruggiero Settimo (RS) | 19 May 1943 | 1215 | Fiume | 20 May 1943 | 0030 | Fiume | 60 | Exercises. | ||
| Ruggiero Settimo (RS) | 21 May 1943 | 1215 | Fiume | 22 May 1943 | 0039 | Fiume | 73 | Exercises. | ||
| Ruggiero Settimo (RS) | 22 May 1943 | 1000 | Fiume | 22 May 1943 | 1720 | Fiume | 38 | Exercises. | ||
| Ruggiero Settimo (RS) | 24 May 1943 | 1220 | Fiume | 25 May 1943 | 0050 | Fiume | 66 | Exercises. | ||
| Ruggiero Settimo (RS) | 26 May 1943 | 1200 | Fiume | 27 May 1943 | 0225 | Fiume | 79 | Exercises. | ||
| Ruggiero Settimo (RS) | 28 May 1943 | 1300 | Fiume | 29 May 1943 | 0058 | Fiume | 62 | Exercises. | ||
| Ruggiero Settimo (RS) | 31 May 1943 | 1200 | Fiume | 1 Jun 1943 | 0156 | Fiume | 76 | Exercises. | ||
| Ruggiero Settimo (RS) | 2 Jun 1943 | 1230 | Fiume | 3 Jun 1943 | 0130 | Fiume | 66 | Exercises. | ||
| Ruggiero Settimo (RS) | 4 Jun 1943 | 1046 | Fiume | 5 Jun 1943 | 0235 | Fiume | 89 | Exercises. | ||
| Ruggiero Settimo (RS) | 7 Jun 1943 | 1030 | Fiume | 8 Jun 1943 | 0230 | Fiume | 84 | Exercises. | ||
| Ruggiero Settimo (RS) | 9 Jun 1943 | 1005 | Fiume | 10 Jun 1943 | 0215 | Fiume | 78 | Exercises. | ||
| Ruggiero Settimo (RS) | 11 Jun 1943 | 1250 | Fiume | 11 Jun 1943 | 1820 | Fiume | 34 | Exercises. | ||
| Ruggiero Settimo (RS) | 11 Jun 1943 | 2130 | Fiume | 12 Jun 1943 | 0200? | Fiume | 36 | Exercises. | ||
| Ruggiero Settimo (RS) | 15 Jun 1943 | 1205 | Fiume | 16 Jun 1943 | 0210 | Fiume | 80 | Exercises. | ||
| Ruggiero Settimo (RS) | 17 Jun 1943 | 1010 | Fiume | 18 Jun 1943 | 0125 | Fiume | 75 | Exercises. | ||
| Ruggiero Settimo (RS) | 19 Jun 1943 | 1230 | Fiume | 20 Jun 1943 | 0245 | Fiume | 70 | Exercises. | ||
| Ruggiero Settimo (RS) | 21 Jun 1943 | 0945 | Fiume | 21 Jun 1943 | 1245 | Fiume | 32 | Exercises. | ||
| Ruggiero Settimo (RS) | 21 Jun 1943 | 1445 | Fiume | 22 Jun 1943 | 0100 | Fiume | 60 | Exercises. | ||
| Ruggiero Settimo (RS) | 22 Jun 1943 | 1445 | Fiume | 23 Jun 1943 | 0100 | Fiume | 82 | Exercises. | ||
| Ruggiero Settimo (RS) | 26 Jun 1943 | 1240 | Fiume | 27 Jun 1943 | 0200 | Fiume | 67 | Exercises. | ||
| Ruggiero Settimo (RS) | 28 Jun 1943 | 1445 | Fiume | 28 Jun 1943 | 2145 | Fiume | 34 | Exercises. | ||
| Ruggiero Settimo (RS) | 29 Jun 1943 | 1215 | Fiume | 29 Jun 1943 | 2140 | Fiume | 35 | Exercises. | ||
| Ruggiero Settimo (RS) | 1 Jul 1943 | 1215 | Fiume | 2 Jul 1943 | 0150 | Fiume | 70 | Exercises. | ||
| Ruggiero Settimo (RS) | 3 Jul 1943 | 1150 | Fiume | 4 Jul 1943 | 0130 | Fiume | 62 | Exercises. | ||
| Ruggiero Settimo (RS) | 6 Jul 1943 | 1210 | Fiume | 7 Jul 1943 | 0140 | Fiume | 65 | Exercises. | ||
| Ruggiero Settimo (RS) | 8 Jul 1943 | 1220 | Fiume | 9 Jul 1943 | 0045 | Fiume | 59,5 | Exercises. | ||
| Ruggiero Settimo (RS) | 10 Jul 1943 | 1130 | Fiume | 11 Jul 1943 | 0120 | Fiume | 69,6 | Exercises. | ||
| Ruggiero Settimo (RS) | 14 Jul 1943 | 1015 | Fiume | 14 Jul 1943 | 1710 | Fiume | Exercises. | |||
| Ruggiero Settimo (RS) | 14 Jul 1943 | 2050 | Fiume | 15 Jul 1943 | 0220 | Fiume | 75 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 16 Jul 1943 | 1005 | Fiume | 16 Jul 1943 | 1725 | Fiume | Exercises. | |||
| Ruggiero Settimo (RS) | 16 Jul 1943 | 2110 | Fiume | 17 Jul 1943 | 0035 | Fiume | 64 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 19 Jul 1943 | 1000 | Fiume | 19 Jul 1943 | 1700 | Fiume | Exercises. | |||
| Ruggiero Settimo (RS) | 19 Jul 1943 | 2050 | Fiume | 20 Jul 1943 | 0240 | Fiume | 77 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 21 Jul 1943 | 1000 | Fiume | 21 Jul 1943 | 1845 | Fiume | Exercises. | |||
| Ruggiero Settimo (RS) | 21 Jul 1943 | 2045 | Fiume | 22 Jul 1943 | 0100 | Fiume | 88 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 23 Jul 1943 | 2045 | Fiume | 23 Jul 1943 | 0130 | Fiume | Exercises. | |||
| Ruggiero Settimo (RS) | 23 Jul 1943 | 2045 | Fiume | 24 Jul 1943 | 0100 | Fiume | 69 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 24 Jul 1943 | 1245 | Fiume | 24 Jul 1943 | 1815 | Fiume | 29 | Exercises. | ||
| Ruggiero Settimo (RS) | 26 Jul 1943 | 1015 | Fiume | 26 Jul 1943 | 1750 | Fiume | Exercises. | |||
| Ruggiero Settimo (RS) | 26 Jul 1943 | 2030 | Fiume | 27 Jul 1943 | 0100 | Fiume | 72 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 28 Jul 1943 | 1015 | Fiume | 28 Jul 1943 | 1645 | Fiume | Exercises. | |||
| Ruggiero Settimo (RS) | 28 Jul 1943 | 2200 | Fiume | 29 Jul 1943 | 0530 | Fiume | 97 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 30 Jul 1943 | 1015 | Fiume | 30 Jul 1943 | 1415 | Fiume | 21 | Exercises. | ||
| Ruggiero Settimo (RS) | 31 Jul 1943 | 1025 | Fiume | 31 Jul 1943 | 1400 | Fiume | Exercises. | |||
| Ruggiero Settimo (RS) | 31 Jul 1943 | 2115 | Fiume | 31 Jul 1943 | 2400 | Fiume | 52 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 2 Aug 1943 | 1020 | Sussa (Fiume) | 2 Aug 1943 | 1715 | Sussa (Fiume) | Exercises. | |||
| Ruggiero Settimo (RS) | 2 Aug 1943 | 2030 | Sussa (Fiume) | 3 Aug 1943 | 0130 | Sussa (Fiume) | 64 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 4 Aug 1943 | 1000 | Sussa (Fiume) | 4 Aug 1943 | 1830 | Sussa (Fiume) | Exercises. | |||
| Ruggiero Settimo (RS) | 4 Aug 1943 | 2100 | Sussa (Fiume) | 5 Aug 1943 | 0120 | Sussa (Fiume) | 76 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 6 Aug 1943 | 1020 | Sussa (Fiume) | 6 Aug 1943 | 1730 | Sussa (Fiume) | Exercises. | |||
| Ruggiero Settimo (RS) | 6 Aug 1943 | 2030 | Sussa (Fiume) | 7 Aug 1943 | 0150 | Sussa (Fiume) | 66 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 7 Aug 1943 | 1215 | Sussa (Fiume) | 7 Aug 1943 | 1730 | Sussa (Fiume) | 31 | Exercises. | ||
| Ruggiero Settimo (RS) | 9 Aug 1943 | 1020 | Sussa (Fiume) | 9 Aug 1943 | 1710 | Sussa (Fiume) | Exercises. | |||
| Ruggiero Settimo (RS) | 9 Aug 1943 | 2055 | Sussa (Fiume) | 10 Aug 1943 | 0040 | Sussa (Fiume) | 62 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 11 Aug 1943 | 0600 | Sussa (Fiume) | 11 Aug 1943 | 1715 | Sussa (Fiume) | Trials. | |||
| Ruggiero Settimo (RS) | 11 Aug 1943 | 2050 | Sussa (Fiume) | 12 Aug 1943 | 0030 | Sussa (Fiume) | 100 | Trials [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 13 Aug 1943 | 1015 | Sussa (Fiume) | 13 Aug 1943 | 1600 | Sussa (Fiume) | Exercises. | |||
| Ruggiero Settimo (RS) | 13 Aug 1943 | 2045 | Sussa (Fiume) | 14 Aug 1943 | 0300 | Sussa (Fiume) | 74 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 14 Aug 1943 | 1230 | Sussa (Fiume) | 14 Aug 1943 | 1955 | Sussa (Fiume) | 38 | Exercises. | ||
| Ruggiero Settimo (RS) | 16 Aug 1943 | 1030 | Sussa (Fiume) | 16 Aug 1943 | 1710 | Sussa (Fiume) | Exercises. | |||
| Ruggiero Settimo (RS) | 16 Aug 1943 | 2040 | Sussa (Fiume) | 17 Aug 1943 | 0345 | Sussa (Fiume) | 72 | Exercises [mileage includes morning sortie]. | ||
| Ruggiero Settimo (RS) | 20 Aug 1943 | 0540 | Sussa (Fiume) | 20 Aug 1943 | 1340 | Sussa (Fiume) | 40 | Exercises. | ||
| Ruggiero Settimo (RS) | 23 Aug 1943 | 1100 | Sussa (Fiume) | 23 Aug 1943 | 1200 | Fiume | 9 | Passage Sussa-Fiume for docking. | ||
| Ruggiero Settimo (RS) | 9 Sep 1943 | 2300 | Fiume | 12 Sep 1943 | 1210 | Taranto | 530 | Passage Fiume-Taranto to surrender. She was used for A/S exercises in Taranto. She carried out seventy-three sorties of exercises for a total of 650 hours in 1943-1944. Disarmed the following summer. | ||
| 11 Sep 1943 | 1800 | An unknown MTB was sighted at long range and the submarine prudently dived. | ||||||||
| 12 Sep 1943 | 0930 | The Italian submarine Otaria was sighted and recognition signals were exchanged. | ||||||||
| Ruggiero Settimo (RS) | 22 Oct 1943 | 0600 | Taranto | 22 Oct 1943 | 1243 | Taranto | 25 | Exercises. | ||
| Ruggiero Settimo (RS) | 30 Oct 1943 | 0635 | Taranto | 30 Oct 1943 | 1332 | Taranto | 32 | Exercises. | ||
| Ruggiero Settimo (RS) | 11 Nov 1943 | 0748 | Taranto | 11 Nov 1943 | 1710 | Taranto | 28 | Exercises. | ||
| Ruggiero Settimo (RS) | 16 Nov 1943 | 0730 | Taranto | 16 Nov 1943 | 1139 | Taranto | 20 | Exercises. | ||
| Ruggiero Settimo (RS) | 23 Nov 1943 | 0632 | Taranto | 23 Nov 1943 | 1215 | Taranto | 20 | Exercises with the torpedo boats Calliope and Fabrizi. | ||
| Ruggiero Settimo (RS) | 30 Nov 1943 | 0654 | Taranto | 30 Nov 1943 | 1345 | Taranto | 24 | Exercises with the corvette Minerva and the torpedo boat Fabrizi. | ||
| Ruggiero Settimo (RS) | 7 Dec 1943 | 0632 | Taranto | 7 Dec 1943 | 1512 | Taranto | 30 | Exercises. | ||
| Ruggiero Settimo (RS) | 11 Dec 1943 | 0707 | Taranto | 11 Dec 1943 | 1348 | Taranto | 25 | Exercises. | ||
| Ruggiero Settimo (RS) | 14 Dec 1943 | 0700 | Taranto | 14 Dec 1943 | 1800 | Taranto | 38 | Exercises with the torpedo boats Indomito, Aretusa, Abba and Pilo and the corvette Urania. | ||
| Ruggiero Settimo (RS) | 18 Dec 1943 | 0845 | Taranto | 18 Dec 1943 | 1800 | Taranto | 26,5 | Exercises with the torpedo boats Indomito and Aretusa, the corvettes Urania and Gabbiano and the tug Ercole. | ||
| Ruggiero Settimo (RS) | 28 Dec 1943 | 0632 | Taranto | 28 Dec 1943 | 0800 | Taranto | 11 | Exercises. | ||
| Ruggiero Settimo (RS) | 30 Dec 1943 | 0700 | Taranto | 30 Dec 1943 | 1333 | Taranto | 24,5 | Exercises. | ||
| Marcantonio Bragadino (BG) | 12 Jun 1944 | 1910 | Taranto | 12 Jun 1944 | 2040 | Taranto (Mar Grande) | 5 | Exercises. | ||
| Marcantonio Bragadino (BG) | 13 Jun 1944 | 0500 | Taranto (Mar Grande) | 13 Jun 1944 | 0630 | Taranto | 5 | Return trip [just before - at 0000-0300 hours - trained in port with Mezzi d'assalto who set limpets on the hull]. Held in reserve until the end of war. | ||
212 entries. 206 total patrol entries (15 marked as war patrols) and 15 events.