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Reginaldo Giuliani file photo [31813]

Reginaldo Giuliani

Ship ClassLiuzzi-class Submarine
Hull NumberGN
BuilderCantieri navali Tosi di Taranto, Taranto, Italy
Displacement1,050 tons standard; 1,508 tons submerged
Length253 feet
Beam25 feet
Draft14 feet
MachineryTwo Tosi diesel engines (1,750hp), two electric motors
Speed18 knots
Armament8x533mm torpedo tubes, 2x100mm/47cal guns, 4x13.2mm machine guns
Submerged Speed8 knots


ww2dbaseReginaldo Giuliani was launched in Dec 1939. After two war patrols in the Mediterranean Sea, she joined Bordeaux Sommergibile (BETASOM) based in Bordeaux, France in Sep 1940 and then sailed to Gdynia (German: Gotenhafen), occupied Poland in Mar 1941. Until Apr 1942, she was a training ship for Italian submarine officers and crewmen learning German submarine tactics. Returning to Bordeaux in May 1942 to resume war patrols, she would go on to sink three ships in the central Atlantic Ocean in Aug 1942, two British and one American. In Sep 1942, she was damaged by British aircraft, and entered Santander, Spain for repairs until Nov 1942. After conversion into a supply vessel, she set sail from Bordeaux in May 1943, carrying 130 tons of mercury for Japanese-controlled Singapore. When Italy capitulated in Sep 1943, she was seized by the Germans stationed at Singapore. Transferred to the German base at Batavia, Java, Dutch East Indies and renamed UIT-23, she set sail for France in Feb 1944 with 135 tons of rubber and 70 tons of tin aboard under the command of Oberleutnant zur See Werner Striegler. She was discovered and sunk in the Malacca Strait by British submarine HMS Tally-Ho by torpedoes; Striegler survived the sinking and was transferred to Penang, Straits Settlements to assume command of UIT-25, his previous post.


Last Major Revision: Jun 2022

Submarine Reginaldo Giuliani (GN) Interactive Map


Launching of Reginaldo Giuliani, Cantieri navali Tosi di Taranto shipyard, Taranto, Puglia, Italy, 3 Dec 1939

Reginaldo Giuliani Operational Timeline

3 Dec 1939 Reginaldo Giuliani was launched at the Cantieri navali Tosi di Taranto shipyard in Taranto, Puglia, Italy.
27 Jul 1940 Alpino Bagnolini sighted a submarine off Cape Santa Maria de Leuca, Italy at 0215 hours, but lost contact shortly after. Around the same time, Reginaldo Giuliani also reported a submarine in the same area. Thus, it was possible that the two Italian submarines had sighted each other. At 1200 hours, Alpino Bagnolini arrived at Taranto, Italy at 1200 hours, ending her second war patrol.
29 Aug 1940 Reginaldo Giuliani departed Italy.
10 Sep 1940 Reginaldo Giuliani transited the Strait of Gibraltar.
30 Sep 1940 Reginaldo Giuliani arrived at Bordeaux, France.
5 Oct 1940 British submarine HMS Tigris spotted a group of Axis warships (Italian submarine Maggiore Baracca, Italian submarine Reginaldo Giuliani, German minesweeper M-9, German minesweeper M-13, and German auxiliary Cap Hadid) and fired four torpedoes at the distance of about 2,500 yards, about 20 miles west of the French coast at 0815 hours. All torpedoes missed the targets, but two of the torpedoes were detonated some distance after missing the targets. British commanding officer Lieutenant Commander Howard Bone had originally mistaken one of the German ships as a third submarine, thus even though all four torpedoes missed, having seeing only two submarines after the detonations Bone thought he had destroyed one enemy submarine. Maggiore Baracca arrived at Pauillac, France in the evening, ending her first war patrol.
16 Mar 1941 Reginaldo Giuliani departed Bordeaux, France for Gdynia (Gotenhafen), occupied Poland.
23 May 1942 Reginaldo Giuliani arrived at Bordeaux, France.
24 Jun 1942 Reginaldo Giuliani departed Bordeaux, France for a war patrol.
10 Aug 1942 Reginaldo Giuliani sank British freighter Medon by torpedo and gunfire in the Atlantic Ocean. She was sailing from Port Louis, Mauritius to New York, United States in ballast. All 64 aboard survived.
13 Aug 1942 Reginaldo Giuliani attacked American freighter California by torpedo and gunfire in the Atlantic Ocean. The ship was en route from Cape Town, South Africa to Trinidad. All 38 aboard abandoned the sinking ship, and one of them would later die of exposure before being rescued.
14 Aug 1942 Reginaldo Giuliani sank British freighter Sylvia de Larrinaga 700 miles southwest of Cape Verde Islands at 1930 hours, killing 3 of 53, including the master.
1 Sep 1942 A British Sunderland aircraft attacked Italian submarine Reginaldo Giuliani on the surface in the Bay of Biscay west of France at 1244 hours, damaging the submarine; 2 were killed.
2 Sep 1942 Reginaldo Giuliani was damaged by British No. 304 Squadron Wellington aircraft in the Atlantic Ocean.
3 Sep 1942 Reginaldo Giuliani arrived at Santander, Cantabria, Spain.
8 Nov 1942 Reginaldo Giuliani departed Santander, Cantabria, Spain.
16 May 1943 Reginaldo Giuliani departed Bordeaux, France.
1 Aug 1943 Reginaldo Giuliani arrived in Singapore.
13 Feb 1944 Oberleutnant zur See Werner Striegler relinguishes command of UIT-25 to take command of UIT-23. On the same day, UIT-23 departed Batavia, Java, Dutch East Indies with 135 tons of rubber and 70 tons of tin aboard for France.
14 Feb 1944 UIT-23 was sunk by torpedoes from HMS Tally-Ho in the Strait of Malacca. 26 of 40 survived, including the commanding officer, Oberleutnant zur See Werner Striegler, who was then brought to Penang, Straits Settlements to be made the commanding officer of UIT-25.

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Launching of Reginaldo Giuliani, Cantieri navali Tosi di Taranto shipyard, Taranto, Puglia, Italy, 3 Dec 1939

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