On This Day: On-board ammo sinks battleship; over 300 souls lost - Sep. 25, 1911
(edited from Wikipedia)
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Liberté was a pre-dreadnought battleship built for the French Navy in the mid-1900s. She was the lead ship of the Liberté class, which included three other vessels. Liberté carried a main battery of four 12 in. guns, but mounted ten 7.6 in. guns for her secondary armament in place of the 6.5 in. guns of the earlier vessels. Like many late pre-dreadnought designs, Liberté was completed after the revolutionary British battleship HMS Dreadnought had entered service, rendering her obsolescent.
On entering service, Liberté was assigned to the 2nd Division of the Mediterranean Squadron, based in Toulon. She immediately began the normal peacetime training routine of squadron and fleet maneuvers and cruises to various ports in the Mediterranean. She also participated in several naval reviews for a number of French and foreign dignitaries.
Liberté's active career was cut short on 25 September 1911 when a fire broke out in one of the ship's propellant magazines and led to a detonation of the charges stored there, destroying the ship in a tremendous explosion that killed 286 of her crew. The blast also damaged several other vessels and killed crewmen on six neighboring ships.
An investigation revealed that the standard French propellant, Poudre B, was prone to decomposition that rendered it very unstable; it had likely been the culprit in several other ammunition fires in other ships. The wreck remained in Toulon until 1925, when her destroyed hull was refloated, towed into a drydock, and broken up.
Loss
At 05:31 on the morning of 25 September, crewmen in other battleships reported seeing smoke coming from Liberté, originating from her forward starboard casemate. Shortly thereafter, the forward superstructure erupted in flames, but it quickly appeared to observers that the ship's crew was getting the fire under control.
At 05:53 a tremendous explosion aboard Liberté rocked the harbor. The ship was badly damaged by the blast, with both central 194 mm turrets thrown overboard, the deck amidships collapsed, and the forward 55 m (180 ft) of the ship completely destroyed. The forward 305 mm turret was blasted apart, and only one of the guns was recovered, having been hurled into the muddy bottom of the harbor.
The explosion threw a 37-metric-ton chunk of armor plate from the ship into the battleship République moored some 690 ft away, which caused significant damage. Splinters from the exploding ship sank a steam pinnace and killed fifteen men aboard the armored cruiser Marseillaise, nine aboard the battleship Saint Louis, six aboard the armored cruiser Léon Gambetta, four aboard the battleship Suffren, and three aboard Démocratie. Liberté's surviving crew immediately fled the ship; 286 were killed in the explosion and 188 were wounded. Fortunately, 143 of the crew, including the ship's commander, had been on leave in Toulon at the time and thus avoided the accident.
The navy convened a commission to investigate the incident on 25 September. They considered the possibility of sabotage, but ruled it out. The investigation determined that the accident was likely caused by excessive heat in the magazines and deemed that the standard procedures for ammunition monitoring were not sufficient.
The French Navy had earlier suffered a series of fatal accidents in Toulon, beginning with an explosion aboard a torpedo boat in February 1907 in which nine men were killed. The following month, the battleship Iéna blew up, killing 107 men. An explosion aboard a gunnery training ship killed six in August 1908, and an explosion on a cruiser killed thirteen in September 1910. Six more men were killed aboard the cruiser Gloire just two weeks before Liberté exploded, on 10 September 1911. The culprit was unstable Poudre B, a nitrocellulose-based propellant that was also responsible for the destruction of Iéna, and possibly the other explosions as well.
Following the disaster, the navy established new rules, requiring that propellant charges older than four years be discarded. The Navy Minister also rescinded an order instructing gun crews to return propellant charges that had misfired to the magazines; going forward, charges that had been placed in the guns would either have to be fired or discarded.
The wreck of the ship remained in Toulon for several years, though work on clearing or marking navigational hazards began immediately. World War I, which lasted from 1914 to 1918, significantly delayed work on refloating the remnants of the hull. On 4 September 1920, the old cruiser Latouche-Tréville was fitted with four and later six compressed air pumps and brought alongside to serve as a barracks for the workers and a floating workshop. A pair of submarines and several smaller craft were also used to aid in the recovery effort. On 21 February 1925, Liberté's hull was pumped with compressed air and refloated, before being towed into a drydock in Toulon, where she was broken up.
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https://en.wikipedia.org/wiki/French_battleship_Libert%C3%A9
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HMS Dreadnought
HMS Dreadnought was a Royal Navy battleship the design of which revolutionised naval power. The ship's entry into service in 1906 represented such an advance in naval technology that her name came to be associated with an entire generation of battleships, the dreadnoughts, as well as the class of ships named after her. Likewise, the generation of ships she made obsolete became known as pre-dreadnoughts. Admiral Sir John "Jacky" Fisher, First Sea Lord of the Board of Admiralty, is credited as the father of Dreadnought. Shortly after he assumed office in 1904, he ordered design studies for a battleship armed solely with 12 in (305 mm) guns and a speed of 21 knots (39 km/h; 24 mph). He convened a Committee on Designs to evaluate the alternative designs and to assist in the detailed design work.
Dreadnought was the first battleship of her era to have a uniform main battery, rather than having a few large guns complemented by a heavy secondary armament of smaller guns. She was also the first capital ship to be powered by steam turbines, making her the fastest battleship in the world at the time of her completion. Her launch helped spark a naval arms race as navies around the world, particularly the Imperial German Navy, rushed to match it in the build-up to the First World War.
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https://en.wikipedia.org/wiki/HMS_Dreadnought_(1906)
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