| | Submarine | Date | Time | Port | Arr. date | Arr. time | Arr. port | Miles | Description |
|---|
| Sirena (SI) | 5 Aug 1942 | 0703 | Portolago (Leros) | 5 Aug 1942 | 1203 | Portolago (Leros) | 20,3 | Exercises. |
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| Sirena (SI) | 11 Aug 1942 | 0804 | Portolago (Leros) | 11 Aug 1942 | 1209 | Portolago (Leros) | 19,8 | Exercises. |
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| Sirena (SI) | 24 Aug 1942 | 0630 | Portolago (Leros) | 24 Aug 1942 | 0951 | Portolago (Leros) | 23,6 | Exercises. |
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| Sirena (SI) | 31 Aug 1942 | 0732 | Portolago (Leros) | 31 Aug 1942 | 1140 | Portolago (Leros) | 13,1 | Exercises. |
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| Sirena (SI) | 2 Sep 1942 | 0810 | Portolago (Leros) | 2 Sep 1942 | 0940 | Portolago (Leros) | 5,2 | Trials. |
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| Sirena (SI) | 4 Sep 1942 | 0800 | Portolago (Leros) | 4 Sep 1942 | 1123 | Portolago (Leros) | 12,3 | Exercises. |
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| Sirena (SI) | 15 Sep 1942 | 0800 | Portolago (Leros) | 15 Sep 1942 | 1105 | Portolago (Leros) | 11,9 | Exercises. |
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| 1. | Sirena (SI) | 16 Sep 1942 | 0145 | Leros | 24 Sep 1942 | 1030 | Leros | 811,7 | Patrolled in 36°10' N, 28°30' E following enemy submarine reports (HHMS Papanicolis and HMS Traveller carrying operation ANGLO). Uneventul. |
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| Sirena (SI) | 12 Oct 1942 | 0750 | Leros | 12 Oct 1942 | 1100 | Leros | 17,2 | Trials. |
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| Sirena (SI) | 15 Oct 1942 | 0745 | Leros | 15 Oct 1942 | 1053 | Leros | 16,2 | Trials. |
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| 2. | Sirena (SI) | 31 Oct 1942 | 0650 | Leros | 14 Nov 1942 | 1345 | Leros | 1459,6 | Sailed escorted by MS.26 and patrolled near Rhodes between 34°20'N and 36°00'N, and between 30°00'E and 30°40'E. Uneventful. |
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| 3. | Sirena (SI) | 21 Nov 1942 | 1355 | Leros | 26 Nov 1942 | 1600 | Pola | 1140 | Patrolled in Aegean and passage Leros-Pola around the Peloponnese. Uneventful. |
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| Sirena (SI) | 30 Nov 1942 | 0700 | Pola | 30 Nov 1942 | 1353 | Monfalcone | 83 | Passage Pola-Monfalcone. Then long refit. |
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| Sirena (SI) | 2 Feb 1943 | 0840 | Monfalcone | 2 Feb 1943 | 1530 | Monfalcone | 35,3 | Trials. |
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| Sirena (SI) | 6 Feb 1943 | 0835 | Monfalcone | 6 Feb 1943 | 1503 | Venice | 63,6 | Passage Monfalcone-Venice to collect G7e torpedoes. |
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| Sirena (SI) | 11 Feb 1943 | 0855 | Venice | 11 Feb 1943 | 1125 | Venice | 8,5 | Trials. |
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| Sirena (SI) | 12 Feb 1943 | 0830 | Venice | 12 Feb 1943 | 1610 | Pola | 65,3 | Passage Venice-Pola. |
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| Sirena (SI) | 14 Feb 1943 | 0807 | Pola | 14 Feb 1943 | 1125 | Pola | 10,3 | Trials. |
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| Sirena (SI) | 16 Feb 1943 | 0830 | Pola | 16 Feb 1943 | 1130 | Pola | 2,5 | Trials. |
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| Sirena (SI) | 17 Feb 1943 | 2338 | Pola | 18 Feb 1943 | 0550 | Fiume | 57 | Passage Pola-Fiume. |
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| Sirena (SI) | 19 Feb 1943 | 0840 | Fiume | 19 Feb 1943 | 1632 | Fiume | 23,2 | Exercises. |
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| Sirena (SI) | 20 Feb 1943 | 0854 | Fiume | 20 Feb 1943 | 1830 | Fiume | 30,5 | Exercises. |
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| Sirena (SI) | 22 Feb 1943 | 0854 | Fiume | 22 Feb 1943 | 2325 | Fiume | 37,3 | Exercises. |
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| Sirena (SI) | 23 Feb 1943 | 0830 | Fiume | 23 Feb 1943 | 1615 | Fiume | 28,5 | Exercises. |
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| Sirena (SI) | 25 Feb 1943 | 0905 | Fiume | 25 Feb 1943 | 1402 | Fiume | 25,4 | Exercises. |
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| Sirena (SI) | 1 Mar 1943 | 1000 | Fiume | 1 Mar 1943 | 1210 | Fiume | | Exercises. |
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| Sirena (SI) | 2 Mar 1943 | 1948 | Fiume | 7 Mar 1943 | 0810 | Augusta | 706 | Passage Fiume-Augusta, escorted by the torpedo boat Insidioso and briefly reinforced off Pola by the torpedo boat T.3. |
| | | 3 Mar 1943 | 1545 | | At 1545 hours, the periscope of an enemy submarine was sighted steering 185°. C.C. Scarelli lost sight of the periscope before he could mount an attack. No allied submarine operated in the area. |
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| 4. | Sirena (SI) | 13 Mar 1943 | 2030 | Augusta | 15 Mar 1943 | 0655 | Augusta | 245 | Sailed for patrol between 31°40'N and 32°20'N, and between 16°00'E and 17°00'E but was then ordered back. |
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| Sirena (SI) | 15 Mar 1943 | 1507 | Augusta | 16 Mar 1943 | 1804 | Naples | 273,9 | Passage Augusta-Naples. Uneventful. |
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| Sirena (SI) | 18 Mar 1943 | 1130 | Naples | 18 Mar 1943 | 1430 | Naples | 16,5 | Trials. |
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| Sirena (SI) | 26 Mar 1943 | 1425 | Naples | 26 Mar 1943 | 1705 | Pozzuoli | 13,2 | Passage Naples-Pozzuoli. |
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| Sirena (SI) | 5 Apr 1943 | 0538 | Pozzuoli | 6 Apr 1943 | 0840 | La Maddalena | 204 | Passage Pozzuoli-La Maddalena. |
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| Sirena (SI) | 13 Apr 1943 | 0720 | La Maddalena | 13 Apr 1943 | 1130 | La Maddalena | 7 | Exercises. |
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| Sirena (SI) | 20 Apr 1943 | 0710 | La Maddalena | 20 Apr 1943 | 1132 | La Maddalena | 8 | Exercises. |
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| Sirena (SI) | 24 Apr 1943 | 1230 | La Maddalena | 24 Apr 1943 | 1350 | Mezzo Schifo | 2,8 | Passage La Maddalena-Mezzo Schifo. |
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| Sirena (SI) | 27 Apr 1943 | 0715 | Mezzo Schifo | 27 Apr 1943 | 1140 | Porto Palma | 8,2 | Passage Mezzo Schifo-Porto Palma. |
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| Sirena (SI) | 10 May 1943 | 0715 | Porto Palma | 10 May 1943 | 1140 | La Maddalena | 8,5 | Passage Porto Palma-La Maddalena. |
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| Sirena (SI) | 14 May 1943 | 0715 | La Maddalena | 14 May 1943 | 1140 | Mezzo Schifo | 2,5 | Passage La Maddalena-Mezzo Schifo. |
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| Sirena (SI) | 15 May 1943 | 0047 | La Maddalena | 19 May 1943 | 0604 | Taranto | 668 | Passage La Maddalena-Taranto. Uneventful. |
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| Sirena (SI) | 29 May 1943 | 0550 | Taranto | 29 May 1943 | 1000 | Taranto | 15,5 | Exercises. |
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| Sirena (SI) | 6 Jun 1943 | 0800 | Taranto | 6 Jun 1943 | 1135 | Taranto | 18 | Trials and exercises. |
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| 5. | Sirena (SI) | 7 Jun 1943 | 2033 | Taranto | 12 Jun 1943 | 1520 | Portolago (Leros) | 905,8 | Storing trip Taranto-Leros (3.6 tons: 2.8 tons of ammunition, 0.8 ton of light weapons). Uneventful. |
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| Sirena (SI) | 17 Jun 1943 | 0800 | Portolago (Leros) | 17 Jun 1943 | 1024 | Portolago (Leros) | 7 | Exercises. |
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| Sirena (SI) | 23 Jun 1943 | 0806 | Portolago (Leros) | 23 Jun 1943 | 1030 | Portolago (Leros) | 8,5 | Exercises. |
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| Sirena (SI) | 14 Jul 1943 | 0756 | Portolago (Leros) | 14 Jul 1943 | 1002 | Portolago (Leros) | 6,3 | Exercises. |
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| Sirena (SI) | 19 Jul 1943 | 0810 | Portolago (Leros) | 19 Jul 1943 | 1035 | Portolago (Leros) | 7,1 | Exercises. |
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| Sirena (SI) | 26 Jul 1943 | 0800 | Portolago (Leros) | 26 Jul 1943 | 1049 | Portolago (Leros) | 10,3 | Exercises. |
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| 6. | Sirena (SI) | 3 Aug 1943 | 1300 | Leros | 20 Aug 1943 | 0930 | Naples | 1624 | Passage Leros-Taranto including a patrol off Cyrenaica, between 34°00'N and the African coast, and between 24°00'E and 26°00'E, on a patrol line with Galatea. She was then ordered to proceed to Naples instead around Sicily through Point A (35°20'N, 16°00'E), Point B (35°20'N, 14°00'E) and Point C (36°46'N, 12°20'E). |
| | | 13 Aug 1943 | 2145 | 35° 19'N, 14° 49'E | At 2145 hours, a hospital ship was sighted at a range of 8,000 metres. She had not been announced. |
| | | 14 Aug 1943 | 2010 | 35° 20'N, 14° 06'E | At 2010 hours, an unidentified vessel was sighted at a range of 10,000 metres. Sirena dived. |
| | | 14 Aug 1943 | 2128 | 35° 25'N, 13° 57'E | At 2128 hours, a small fast torpedo-boat was sighted at 8,000 metres. Sirena dived. |
| | | 15 Aug 1943 | 1840 | 36° 16'N, 12° 51'E | At 1840 hours, two MTBs were sighted at 3-4,000 metres. Sirena dived to 70 metres. |
| | | 16 Aug 1943 | 0407-0412 | 36° 38'N, 12° 15'E | At 0407 hours, a destroyer was sighted at 10,000 metres. The submarine closed but at 0412 hours, the vessel turned toward her. Sirena dived and later identified her as a corvette. |
| | | 16 Aug 1943 | 2310 |
(0) 0° - Punta Tracino (Pantelleria) - 4 miles. | At 2310 hours, a patrol vessel was sighted at a range of 6,000 metres. Sirena dived. |
|
| Sirena (SI) | 21 Aug 1943 | 2335 | Naples | 23 Aug 1943 | 2141 | Portoferraio | | Passage Naples-Porto Ferraio. |
| | | 22 Aug 1943 | 2330 | 41° 06'N, 11° 37'E
(0) Approximately. | At 2330 hours, a flare was dropped by an unseen aircraft about 100 metres astern the submarine. Sirena dived. |
| | | 23 Aug 1943 | 0940 | 42° 14'N, 9° 40'E | At 0940 hours, an enemy torpedo bomber was sighted at a distance of 4,000 metres. Sirena dived. |
|
| Sirena (SI) | 24 Aug 1943 | 2050 | Portoferraio | 25 Aug 1943 | 0750 | La Spezia | 401 | Passage Portoferraio-La Spezia on the surface at 9 knots through (1) 42°57'N, 10°10'E (2) 43°25'N, 09°44'E [mileage is from 21st August] |
|
| Sirena (SI) | 9 Sep 1943 | | La Spezia | 9 Sep 1943 | | La Spezia | | Scuttled after armistice. |
57 entries. 51 total patrol entries (6 marked as war patrols) and 9 events.
