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SM ''U-14'' or ''U-XIV'' was a U-boat or submarine of the Austro-Hungarian Navy during the First World War. She was launch (ship), launched in 1912 as the French ''Curie'' (Q 87), but captured and rebuilt for service in the Austro-Hungarian Navy. At war's end, the submarine was returned to France and restored to her former name.
''Curie'' was launched in July 1912 at Toulon and completed in 1914. She measured just under long and displacement (ship), displaced nearly on the surface and just over when submerged. At the outbreak of the First World War in August 1914, ''Curie'' was assigned to duty in the Mediterranean. In mid-December, ''Curie''s commander conceived a plan to infiltrate the Austro-Hungarian Navy's main base at Pula, Pola, but during the 20 December attempt, the vessel became ensnared in harbor defenses. Two Austro-Hungarian ships sank ''Curie'', killing three of her crew; the remainder were taken prisoner.
The Austro-Hungarian Navy, which had a small and largely obsolete U-boat fleet, immediately began salvage efforts and succeeded in raising the lightly damaged submarine in early February 1915. After a refit, the boat was commission (ship), commissioned as SM ''U-14'' in June, but had little success early in her career. When her commander fell ill in October, he was replaced by Georg Ritter von Trapp. ''U-14'' was damaged by a depth charge attack in February 1916, and underwent an extensive modernization through November. Resuming duty under von Trapp, ''U-14'' sank her first ship in April 1917, but had her most successful patrol in August, when she sank five ships—including , reportedly the largest cargo ship in the world—in a six-day span.
In January 1918, von Trapp was replaced as commander, but neither of his two successors was able to match his accomplishments. In all, ''U-14'' sank 11 ships with a combined gross register tonnage of nearly 48,000 tons. Returned to France at the end of the war, she rejoined the French Navy in July 1919 under her former name of ''Curie''. She remained in service until 1928 and was scrapped in 1929.
Like all the ''Brumaire''-class submarines, ''Curie'' began her First World War service in the Mediterranean, and was one of the first French submarines to appear in the Adriatic.
On 17 December 1914, ''Curie'', at the insistence of her French-Irish commander Gabriel O'Byrne, departed her base in the Ionian Sea under tow by the French armored cruiser . Depositing her charge from Pula, Pola, the site of the Austro-Hungarian Navy's main base, ''Jules Michelet'' departed, leaving ''Curie'' to proceed to the Austro-Hungarian base. ''Curie'' arrived the next day and began reconnoitering the entrance to the harbor. O'Byrne observed the entrance and exit paths of Austro-Hungarian vessels and plotted a course through the deployed defensive mine (naval), mines. On 19 December, O'Byrne took ''Curie'' in to observe the anti-submarine net that ran across the opening in a long, defensive breakwater (structure), breakwater built to keep submarines from infiltrating the naval base.
Believing that he had accounted for all of the defensive measures, O'Byrne took ''Curie'' to a depth of early on 20 December and, attempting an incursion into the harbor, heard the sounds of chains and wires dragging on the submarine's hull. When the sounds stopped after half a minute, O'Byrne brought ''Curie'' up to periscope depth to discover that he had only penetrated the outer net. ''Curie''s forward momentum carried her into the second net where she became "inextricably entangled". When the submarine, still trapped in the net, was forced to surface for fresh air, ''Curie'' came under fire from the Austro-Hungarian destroyer and torpedo boat ''Tb 63 T'' which quickly sank her. Three of the twenty-six men on board were killed in the attack; the survivors — who included ''Curie''s commander, O'Byrne — were all taken prisoner.
On 29 August, von Trapp sank the Italian steamer east of Malta. ''Milazzo'', at 11,744 tons, was the largest ship sunk by ''U-14'', and among the largest ships sunk by a U-boat in World War I. ''Milazzo'', reported by ''The New York Times'' in 1916 as the largest cargo ship in the world, was the second-largest ship sunk by an Austro-Hungarian submarine. ''U-14'' concluded her patrol on 1 September, when she returned to Cattaro.
''U-14'' sank three more ships during a five-day span in October. On 19 October, ''U-14'' sank the British ship ''Elsiston'' from Malta. One person aboard ''Elsiston'', which was carrying military stores between Malta and Suda Bay, was killed in the attack. Nearby, and on the same day, von Trapp sank the 3,618-ton ''Good Hope'', a British ship laden with iron ore for Middlesbrough. The next ship sunk by ''U-14'' was the Italian steamer ''Capo di Monte'', sunk from Candia (Crete), Candia while on her way from Karachi to Malta.
In January 1918, Friedrich Schlosser replaced von Trapp as commander of ''U-14''. Schlosser was, in turn, replaced in June by Hugo Pistel, who remained in command until the end of the war. Neither of the later commanders was able to duplicate von Trapp's success in ''U-14''; the U-boat sank no more ships through the rest of the war.
After Austria-Hungary's surrender and the end of the First World War, ''U-14'' was returned to France and on 17 July 1919 rejoined the French Navy under her former name of ''Curie''. She was stricken in 1928 and scrapped in 1929.
Design and construction
''Curie'' was a part of the 16-boat authorized under the 1906 program. The ''Brumaire''-class boats were diesel engine, diesel-powered versions of the steam engine, steam-powered submarines (which had been authorized the year before), and, like the ''Pluviôse'' boats, were named after either months of the French Republican Calendar or scientists. ''Curie'' was named after Pierre Curie, Pierre and Marie Curie. The ''Bruimaire'' class was designed by French naval designer Maxime Laubeuf and featured a hull (submarine), double hull. The boats were long, beam (ship), abeam, with a draft (hull), draft of when surfaced. They had a displacement (ship), displacement of surfaced and submerged. ''Curie'', like the other 15 submarines of the class, featured one bow torpedo tube and could carry as many as eight torpedoes. As built, ''Curie'' did not have a deck gun. The ''Brumaire'' class featured twin propeller shafts driven by two French license-built MAN SE, MAN 6-cylinder diesel engines on the surface, or by two electric motors when submerged. ''Curie''s diesel engines generated a total of and could move the submarine at up to on the surface; her electric motors generated and could propel the boat up to submerged. While traveling on the surface at , ''Curie'' had a range of ; the submarine's range while submerged was at . ''Curie'' was keel laying, laid down at the Arsenal de Toulon and launch (ship), launched on 18 July 1912, completed by 1914, and commission (ship), commissioned into the French Navy.French career and sinking
Like all the ''Brumaire''-class submarines, ''Curie'' began her First World War service in the Mediterranean, and was one of the first French submarines to appear in the Adriatic.
On 17 December 1914, ''Curie'', at the insistence of her French-Irish commander Gabriel O'Byrne, departed her base in the Ionian Sea under tow by the French armored cruiser . Depositing her charge from Pula, Pola, the site of the Austro-Hungarian Navy's main base, ''Jules Michelet'' departed, leaving ''Curie'' to proceed to the Austro-Hungarian base. ''Curie'' arrived the next day and began reconnoitering the entrance to the harbor. O'Byrne observed the entrance and exit paths of Austro-Hungarian vessels and plotted a course through the deployed defensive mine (naval), mines. On 19 December, O'Byrne took ''Curie'' in to observe the anti-submarine net that ran across the opening in a long, defensive breakwater (structure), breakwater built to keep submarines from infiltrating the naval base.
Believing that he had accounted for all of the defensive measures, O'Byrne took ''Curie'' to a depth of early on 20 December and, attempting an incursion into the harbor, heard the sounds of chains and wires dragging on the submarine's hull. When the sounds stopped after half a minute, O'Byrne brought ''Curie'' up to periscope depth to discover that he had only penetrated the outer net. ''Curie''s forward momentum carried her into the second net where she became "inextricably entangled". When the submarine, still trapped in the net, was forced to surface for fresh air, ''Curie'' came under fire from the Austro-Hungarian destroyer and torpedo boat ''Tb 63 T'' which quickly sank her. Three of the twenty-six men on board were killed in the attack; the survivors — who included ''Curie''s commander, O'Byrne — were all taken prisoner.
Salvage and Austro-Hungarian career
At the beginning of the First World War, the Austro-Hungarian Navy's U-boat fleet consisted of six largely experimental submarines of three classes. The Navy had five larger, more modern submarines (what would have been the ) under construction in Germany at the outbreak of war, but when the Navy became convinced that delivery of the ''U-7'' boats would be impossible, they were sold to Germany in November 1914. Amidst Austro-Hungarian efforts to replace the now-unavailable ''U-7'' boats, the largely intact ''Curie'', resting at a depth of , became the focus of salvage efforts. Beginning on 21 December, the day after ''Curie''s sinking, salvage crews raised the submarine in stages, finally bringing her to the surface on 2 February 1915. The former ''Curie'', now assigned the designation ''U-14'', was reconditioned and commission (ship), commissioned into the Austro-Hungarian Navy under the command of ''Korvettenkapitän'' Otto Zeidler on 1 June. Zeidler remained in command until he fell ill, and was replaced in mid-October by ''Linienschiffsleutnant'' Georg Ritter von Trapp. Under Zeidler's command and the first months of von Trapp's command, ''U-14'' had no successes. In early February 1916, ''U-14'' joined for a patrol near Durrës, Durazzo. ''U-4'' came closest to scoring a success when she narrowly missed hitting , a British on 7 February. ''U-14'' survived a depth charge attack, but made it back to port with all of her externally mounted torpedoes crushed and both fuel tanks leaking. When she put in for repairs, ''U-14'' was extensively modernized in a refit that kept her in port from February to November. The submarine was given a German-style conning tower that replaced the French-designed wet lookout platform. She was equipped with more powerful diesel engines, which increased her power output from . ''U-14''s fighting potential was further enhanced by the installation of larger fuel tanks, which nearly quadrupled her range to , up from her former maximum of . On 28 April 1917, ''U-14'' was patrolling off the coast of Greece when she scored her first success, ''Teakwood'', a 5,315-ton British tanker (ship), tanker headed from Port Arthur, Texas, to Port Said. On 3 May, on patrol in the same vicinity, von Trapp and ''U-14'' sank another ship, this one the 1,905-ton Italian steamer ''Antonio Sciesa''. In another patrol in July, ''U-14'' sailed on the north side of the island of Corfu while headed for Santi Quaranta, Albania. Because the harbor at Corfu was occupied by the French fleet at the time, ''U-14'' conducted a ''ruse de guerre'' by flying the submarine's former national flag, the French tricolor, in order to pass unmolested. Even though ''U-14''s new conning tower made her look unlike any other ''Brumaire''-class boat, one French patrol plane was successfully fooled by the ruse. When ''U-14''s crew first spotted the aircraft, flying towards them from the direction of the sun, there was not enough time to submerge. As the aircraft drew near, its French markings—and its cargo of bombs—became apparent to the crew. With no other course of action possible, ''U-14''s crew waved their hats and handkerchiefs at the plane. As the French pilot passed overhead, he returned the waves, apparently unaware of the U-boat's true nationality. The only success by ''U-14'' on this cruise was the sinking of ''Marionga Goulandris'', a Greek steamer, near Cape Matapan. ''U-14''s next war patrol was very successful, sinking five ships with a combined tonnage of 24,814, over half of her total tonnage sunk. ''U-14'' departed from the submarine base at Cattaro on 20 August and headed through the Straits of Otranto, successfully evading the Otranto Barrage, and Allies of World War I, Allied blockade of the passageway between Italy and Albania. Heading into the Ionian Sea, von Trapp and ''U-14'' sank the French steamer ''Constance'' on 23 August northeast of Malta. The following day, ''U-14'' sank ''Kilwinning'', a British steamer loaded with coal and a general cargo headed for Port Said. Two days after that, the British steamer ''Titian'' was sunk by ''U-14'' while on en route to Alexandria. ''U-14''s next victim was the British steamer ''Nairn''. The 3,627-ton turret deck ship, on her way from Malta to Port Said with coal, was sunk on the night of 27/28 August from Benghazi.
On 29 August, von Trapp sank the Italian steamer east of Malta. ''Milazzo'', at 11,744 tons, was the largest ship sunk by ''U-14'', and among the largest ships sunk by a U-boat in World War I. ''Milazzo'', reported by ''The New York Times'' in 1916 as the largest cargo ship in the world, was the second-largest ship sunk by an Austro-Hungarian submarine. ''U-14'' concluded her patrol on 1 September, when she returned to Cattaro.
''U-14'' sank three more ships during a five-day span in October. On 19 October, ''U-14'' sank the British ship ''Elsiston'' from Malta. One person aboard ''Elsiston'', which was carrying military stores between Malta and Suda Bay, was killed in the attack. Nearby, and on the same day, von Trapp sank the 3,618-ton ''Good Hope'', a British ship laden with iron ore for Middlesbrough. The next ship sunk by ''U-14'' was the Italian steamer ''Capo di Monte'', sunk from Candia (Crete), Candia while on her way from Karachi to Malta.
In January 1918, Friedrich Schlosser replaced von Trapp as commander of ''U-14''. Schlosser was, in turn, replaced in June by Hugo Pistel, who remained in command until the end of the war. Neither of the later commanders was able to duplicate von Trapp's success in ''U-14''; the U-boat sank no more ships through the rest of the war.
After Austria-Hungary's surrender and the end of the First World War, ''U-14'' was returned to France and on 17 July 1919 rejoined the French Navy under her former name of ''Curie''. She was stricken in 1928 and scrapped in 1929.
Summary of raiding history
Notes
References
Bibliography
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