Duquesne-class Cruiser
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Duquesne-class Cruiser
The ''Duquesne''-class cruiser was a group of two heavy cruisers built for the French Navy in the mid 1920s, the first such vessels built for the French fleet. The two ships in the class were the and . With the ratification of the Washington Naval Treaty of 1922, France could not ignore the ramifications of the cruiser article. To maintain her position of a major naval power she would have to follow the other four major naval powers with her own 10,000 ton - 8 inch gun cruiser. The only modern cruiser design Service techniques des constructions navales (STNC - Constructor's Department) had to draw on was the recently designed 8,000 ton design. The cruiser design authorized under the 1924 build program would sacrifice protection for speed while maintaining the 10,000 ton displacement restriction while mounting 8 inch guns. Two vessels would be authorized and would be known as the ''Duquesne''-class cruiser. Initially classed as a light cruiser, both ships were reclassified on ...
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French Navy
The French Navy (french: Marine nationale, lit=National Navy), informally , is the maritime arm of the French Armed Forces and one of the five military service branches of France. It is among the largest and most powerful naval forces in the world, ranking seventh in combined fleet tonnage and fifth in number of naval vessels. The French Navy is one of eight naval forces currently operating fixed-wing aircraft carriers,Along with the U.S., U.K., China, Russia, Italy, India and Spain with its flagship being the only nuclear-powered aircraft carrier outside the United States Navy, and one of two non-American vessels to use catapults to launch aircraft. Founded in the 17th century, the French Navy is one of the oldest navies still in continual service, with precursors dating back to the Middle Ages. It has taken part in key events in French history, including the Napoleonic Wars and both world wars, and played a critical role in establishing and securing the French colonial ...
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Heavy Cruiser
The heavy cruiser was a type of cruiser, a naval warship designed for long range and high speed, armed generally with naval guns of roughly 203 mm (8 inches) in caliber, whose design parameters were dictated by the Washington Naval Treaty of 1922 and the London Naval Treaty of 1930. The heavy cruiser is part of a lineage of ship design from 1915 through the early 1950s, although the term "heavy cruiser" only came into formal use in 1930. The heavy cruiser's immediate precursors were the light cruiser designs of the 1900s and 1910s, rather than the armored cruisers of the years before 1905. When the armored cruiser was supplanted by the battlecruiser, an intermediate ship type between this and the light cruiser was found to be needed—one larger and more powerful than the light cruisers of a potential enemy but not as large and expensive as the battlecruiser so as to be built in sufficient numbers to protect merchant ships and serve in a number of combat theaters. Wi ...
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French Indochina
French Indochina (previously spelled as French Indo-China),; vi, Đông Dương thuộc Pháp, , lit. 'East Ocean under French Control; km, ឥណ្ឌូចិនបារាំង, ; th, อินโดจีนฝรั่งเศส, officially known as the Indochinese Union; vi, Liên bang Đông Dương, , lit. 'East Ocean Federation'; km, សហភាពឥណ្ឌូចិន; lo, ສະຫະພາບອິນໂດຈີນ and after 1947 as the Indochinese Federation,; vi, Liên đoàn Đông Dương; km, សហព័ន្ធឥណ្ឌូចិន; lo, ສະຫະພັນອິນດູຈີນ was a grouping of French colonial territories in Southeast Asia until its demise in 1954. It comprised Cambodia, Laos (from 1899), the Chinese territory of Guangzhouwan (from 1898 until 1945), and the Vietnamese regions of Tonkin (French protectorate), Tonkin in the north, Annam (French protectorate), Annam in the centre, and French Cochinchina, Cochinchin ...
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Invasion Of Normandy
Operation Overlord was the codename for the Battle of Normandy, the Allied operation that launched the successful invasion of German-occupied Western Europe during World War II. The operation was launched on 6 June 1944 (D-Day) with the Normandy landings. A 1,200-plane airborne assault preceded an amphibious assault involving more than 5,000 vessels. Nearly 160,000 troops crossed the English Channel on 6 June, and more than two million Allied troops were in France by the end of August. The decision to undertake a cross-channel invasion in 1944 was taken at the Trident Conference in Washington in May 1943. General Dwight D. Eisenhower was appointed commander of Supreme Headquarters Allied Expeditionary Force, and General Bernard Montgomery was named commander of the 21st Army Group, which comprised all the land forces involved in the invasion. The coast of Normandy of northwestern France was chosen as the site of the invasion, with the Americans assigned to land at sectors ...
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Alexandria
Alexandria ( or ; ar, ٱلْإِسْكَنْدَرِيَّةُ ; grc-gre, Αλεξάνδρεια, Alexándria) is the second largest city in Egypt, and the largest city on the Mediterranean coast. Founded in by Alexander the Great, Alexandria grew rapidly and became a major centre of Hellenic civilisation, eventually replacing Memphis, in present-day Greater Cairo, as Egypt's capital. During the Hellenistic period, it was home to the Lighthouse of Alexandria, which ranked among the Seven Wonders of the Ancient World, as well as the storied Library of Alexandria. Today, the library is reincarnated in the disc-shaped, ultramodern Bibliotheca Alexandrina. Its 15th-century seafront Qaitbay Citadel is now a museum. Called the "Bride of the Mediterranean" by locals, Alexandria is a popular tourist destination and an important industrial centre due to its natural gas and oil pipelines from Suez. The city extends about along the northern coast of Egypt, and is the largest city on t ...
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Mediterranean Sea
The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the east by the Levant. The Sea has played a central role in the history of Western civilization. Geological evidence indicates that around 5.9 million years ago, the Mediterranean was cut off from the Atlantic and was partly or completely desiccated over a period of some 600,000 years during the Messinian salinity crisis before being refilled by the Zanclean flood about 5.3 million years ago. The Mediterranean Sea covers an area of about , representing 0.7% of the global ocean surface, but its connection to the Atlantic via the Strait of Gibraltar—the narrow strait that connects the Atlantic Ocean to the Mediterranean Sea and separates the Iberian Peninsula in Europe from Morocco in Africa—is only wide. The Mediterranean Sea e ...
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French Cruiser Tourville (1926)
''Tourville'' was the second ship of the cruisers of the French Navy. During the interwar period she served in the Mediterranean while taking periodic cruises to show the Flag. During the war she was on blockade duty in the mid Atlantic then the Mediterranean. She was interned for three years at Alexandria, rejoining the war effort in 1943. Again assigned to blockade duty in the Mid Atlantic at Dakar. Post war she aided in the restoration of French Colonial rule in French Indochina until placed in reserve in 1947. She remained in reserve until condemned for disposal in 1962. She was named to honour Anne-Hilarion de Costentien, comte de Tourville (1642 – 1701) who served with distinction under King Louis XIV. He fought against the British and Dutch at the battles of Beachy Head (French: Beveziers) and Barfluer. On 27 June 1693 defeated an English convoy commanded by George Rooke at Cape St Vincent and made Marshall of France. Design and description Under the 1924 progra ...
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French Cruiser Duquesne (1925)
''Duquesne'' was the first of two cruisers built for the French Navy. During the interwar period she served in the Mediterranean while taking periodic cruises to show the Flag. During the war she was on blockade duty in the mid Atlantic then the Mediterranean. She was interned for three years at Alexandria, rejoining the war effort in 1943. Again assigned to blockade duty in the Mid Atlantic at Dakar. Post war she aided in the restoration of French Colonial rule in French Indochina until placed in reserve in 1947. She remained in reserve until condemned for disposal in 1955. She was named to honour Abraham Duquesne, Marquis du Bouchet ( – 1688) who distinguished himself during the Third Dutch War. She was the seventh ship to bear this name since introduced in 1787 for a 74-gun ship captured by the British on 25 July 1803. Design and description Under the 1924 program two 10,000 ton Treaty Cruisers were authorized, becoming the . The contract for one new vessel was awa ...
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Funnel (ship)
A funnel is the smokestack or chimney on a ship used to expel boiler steam and smoke or engine exhaust. They are also commonly referred to as stacks. Purpose The primary purpose of a ship's funnel(s) is to lift the exhaust gases clear of the deck, in order not to foul the ship's structure or decks, and to avoid impairing the ability of the crew to carry out their duties. In steam ships the funnels also served to help induce a convection draught through the boilers. Design Since the introduction of steam-power to ships in the 19th century, the funnel has been a distinctive feature of the silhouette of a vessel, and used for recognition purposes. Funnel area The required funnel cross-sectional area is determined by the volume of exhaust gases produced by the propulsion plant. Often this area is too great for a single funnel. Early steam vessels needed multiple funnels ( had 5 when launched), but as efficiency increased new machinery needed fewer funnels. Merchant ships ...
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Ship Floodability
Floodability is the susceptibility of a ship's construction to flooding. It also refers to the ability to intentionally flood certain areas of the hull for damage control purposes, or to increase stability, which is particularly important in combat vessels, which often face the possibility of serious hull breach due to enemy action, and which rely on well-trained damage controlmen to equalize and then stop flooding of the hull. Floodability is reduced by dividing the volume of the hull into watertight compartments with decks and bulkheads (which also increase the strength of ships), use of double bottom (or double hull), and by other means. If a ship's hull is divided into watertight compartments, any flooding resulting from a breach of the hull can be contained in the compartments where the flooding occurs. In most cases, the watertight compartments are fitted with a system of automatic doors, which can be triggered either remotely or locally as soon as flooding is detected ...
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Bulkhead (partition)
A bulkhead is an upright wall within the hull of a ship or within the fuselage of an airplane. Other kinds of partition elements within a ship are decks and deckheads. Etymology The word ''bulki'' meant "cargo" in Old Norse. During the 15th century sailors and builders in Europe realized that walls within a vessel would prevent cargo from shifting during passage. In shipbuilding, any vertical panel was called a head. So walls installed abeam (side-to-side) in a vessel's hull were called "bulkheads". Now, the term bulkhead applies to every vertical panel aboard a ship, except for the hull itself. History Bulkhead partitions are considered to have been a feature of Chinese junks, a type of ship. Song Dynasty author Zhu Yu (fl. 12th century) wrote in his book of 1119 that the hulls of Chinese ships had a bulkhead build. The 5th-century book ''Garden of Strange Things'' by Liu Jingshu mentioned that a ship could allow water to enter the bottom without sinking. Archaeolo ...
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Draft (hull)
The draft or draught of a ship's hull is the vertical distance between the waterline and the bottom of the hull (keel). The draught of the vessel is the maximum depth of any part of the vessel, including appendages such as rudders, propellers and drop keels if deployed. Draft determines the minimum depth of water a ship or boat can safely navigate. The related term air draft is the maximum height of any part of the vessel above the water. The more heavily a vessel is loaded, the deeper it sinks into the water, and the greater its draft. After construction, the shipyard creates a table showing how much water the vessel displaces based on its draft and the density of the water (salt or fresh). The draft can also be used to determine the weight of cargo on board by calculating the total displacement of water, accounting for the content of the ship's bunkers, and using Archimedes' principle. The closely related term "trim" is defined as the difference between the forward and aft ...
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