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Dover Barrage (World War II)
The Dover Barrage was an underwater blockade by England of German submarines attempting to use the English Channel during World War I. The barrage consisted of explosive mines and indicator nets. A similar barrage was used in World War II. Use in World War I The barrier consisted of minefields laid between Belgium and Dover at the outbreak of war, followed in February 1915 by 25 km of Indicator nets, steel netting anchored to the sea bed. The first evidence of effectiveness was on 4 March 1915, when the German U-boat U-8 was taken, caught in the indicator nets. The first stage of the barrage was completed in April 1915 and it was patrolled by ships of the Dover patrol. Both sides initially believed the barrier to be effective and the Germans attributed some submarine losses to it. However, in March 1916, the Germans found their submarines could traverse the Channel on the surface at night. The British moved the barrier to cover Folkestone- Cap Gris Nez and used new min ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strait Of Dover Map
A strait is an oceanic landform connecting two seas or two other large areas of water. The surface water generally flows at the same elevation on both sides and through the strait in either direction. Most commonly, it is a narrow ocean channel that lies between two land masses. Some straits are not navigable, for example because they are either too narrow or too shallow, or because of an unnavigable reef or archipelago. Straits are also known to be loci for sediment accumulation. Usually, sand-size deposits occur on both the two opposite strait exits, forming subaqueous fans or deltas. Terminology The terms ''channel'', ''pass'', or ''passage'' can be synonymous and used interchangeably with ''strait'', although each is sometimes differentiated with varying senses. In Scotland, ''firth'' or ''Kyle'' are also sometimes used as synonyms for strait. Many straits are economically important. Straits can be important shipping routes and wars have been fought for control of them. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cap Gris Nez
Cap Gris-Nez (literally "cape grey nose"; ) is a cape on the Côte d'Opale in the Pas-de-Calais ''département'' in northern France. The 'Cliffs of the Cape' is the closest point of France to England – from their English counterparts at Dover. Etymology ''Gris-nez'' literally means "grey nose" in English. It is derived from colloquial Dutch "grey cape"; officially, the Dutch name was ''Swartenesse'' ("black cape") to set it apart from ''Blankenesse'' "white cape" ( Cap Blanc-Nez) to the northeast. The element ''-nesse'' is cognate to English '' -ness'', denoting "headland", as in for example Dungeness or Sheerness. Geology The cliffs of Cap Gris-Nez are made of sandstone, clay and chalk. They are mainly grey, which gives the cape its name. It is also a popular place to collect fossils, which are mainly from the Jurassic period. Common fossils include bivalves, gastropods and wood. In the sandstone layers with small pebbles, one can find teeth of fish and reptiles. Some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military History Of The English Channel
A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized and maintained by a sovereign state, with its members identifiable by their distinct military uniform. It may consist of one or more military branches such as an army, navy, air force, space force, marines, or coast guard. The main task of the military is usually defined as defence of the state and its interests against external armed threats. In broad usage, the terms ''armed forces'' and ''military'' are often treated as synonymous, although in technical usage a distinction is sometimes made in which a country's armed forces may include both its military and other paramilitary forces. There are various forms of irregular military forces, not belonging to a recognized state; though they share many attributes with regular military forces, they are less often referred to as simply ''military''. A nation's milita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minefields
A land mine is an explosive device concealed under or on the ground and designed to destroy or disable enemy targets, ranging from combatants to vehicles and tanks, as they pass over or near it. Such a device is typically detonated automatically by way of pressure when a target steps on it or drives over it, although other detonation mechanisms are also sometimes used. A land mine may cause damage by direct blast effect, by fragments that are thrown by the blast, or by both. Landmines are typically laid throughout an area, creating a ''minefield'' which is dangerous to cross. The use of land mines is controversial because of their potential as indiscriminate weapons. They can remain dangerous many years after a conflict has ended, harming civilians and the economy. Seventy-eight countries are contaminated with land mines and 15,000–20,000 people are killed every year while many more are injured. Approximately 80% of land mine casualties are civilians, with children as the m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom In World War I
The United Kingdom was a leading Allied Power during the First World War of 1914–1918. They fought against the Central Powers, mainly Germany. The armed forces were greatly expanded and reorganised—the war marked the founding of the Royal Air Force. The highly controversial introduction, in January 1916, of conscription for the first time in British history followed the raising of one of the largest all-volunteer army in history, known as Kitchener's Army, of more than 2,000,000 men. The outbreak of war was a socially unifying event. Enthusiasm was widespread in 1914, and was similar to that across Europe. On the eve of war, there was serious domestic unrest amongst the labour and suffrage movements and especially in Ireland. But those conflicts were postponed. Significant sacrifices were called for in the name of defeating the Empire's enemies and many of those who could not fight contributed to philanthropic and humanitarian causes. Fearing food shortages and labour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siege Of Calais (1940)
The siege of Calais (1940) was a battle for the port of Calais during the Battle of France. The siege was fought at the same time as the Battle of Boulogne, just before Operation Dynamo, the evacuation of the British Expeditionary Force (BEF) through Dunkirk. After the Franco-British counter-attack at the Battle of Arras (21 May), German units were held back to be ready to resist a resumption of the counter-attack on 22 May, despite the protests of General Heinz Guderian, the commander of the XIX , who wanted to rush north up the Channel coast to capture Boulogne, Calais and Dunkirk. An attack by part of the XIX was not authorised until on the night of By the time that the 10th Panzer Division was ready to attack Calais, the British 30th Infantry Brigade and 3rd Royal Tank Regiment (3rd RTR) had reinforced the French and British troops in the port. On 22 May, the British troops had established roadblocks outside the town and French rearguards skirmished with German armour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SM UB-109
SM ''UB-109'' was a German Type UB III submarine or U-boat in the German Imperial Navy (german: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 31 December 1917 as SM ''UB-109''.) and combined with the ''U'' for ''Unterseeboot'' would be translated as ''His Majesty's Submarine''., group=Note ''UB-109'' was sunk by mine in the English Channel on 29 August 1918 and underwater scanning of the area covered by the Dover Barrage shows her wreck broken in half. Construction She was built by Blohm & Voss Blohm+Voss (B+V), also written historically as Blohm & Voss, Blohm und Voß etc., is a German shipbuilding and engineering company. Founded in Hamburg in 1877 to specialise in steel-hulled ships, its most famous product was the World War II battle ... of Hamburg and following just under a year of construction, launched at Hamburg on 7 July 1917. ''UB-109'' was commissioned later the same year under the command of ''Oblt.z.S.'' Kurt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Searchlight
A searchlight (or spotlight) is an apparatus that combines an extremely bright source (traditionally a carbon arc lamp) with a mirrored parabolic reflector to project a powerful beam of light of approximately parallel rays in a particular direction. It is usually constructed so that it can be swiveled about. Military use The first use of searchlights using carbon arc technology occurred during the Siege of Paris during the Franco-Prussian War. The Royal Navy used searchlights in 1882 to dazzle and prevent Egyptian forces from manning artillery batteries at Alexandria. Later that same year, the French and British forces landed troops under searchlights. By 1907 the value of searchlights had become widely recognized. One recent use was to assist attacks by torpedo boats by dazzling gun crews on the ships being attacked. Other uses included detecting enemy ships at greater distances, as signaling devices, and to assist landing parties. Searchlights were also used by battles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dover Patrol
The Dover Patrol and later known as the Dover Patrol Force was a Royal Navy command of the First World War, notable for its involvement in the Zeebrugge Raid on 22 April 1918. The Dover Patrol formed a discrete unit of the Royal Navy based at Dover and Dunkirk for the duration of the First World War. Its primary task was to prevent enemy German shipping—chiefly submarines—from entering the English Channel ''en route'' to the Atlantic Ocean, thereby obliging the Imperial German Navy to travel via the much longer route around Scotland which was itself covered by the Northern Patrol. History In late July 1914, with war looming, 12 Tribal-class destroyers arrived at Dover to join the near obsolete destroyers already at anchor in the harbour, most of them built in the late 19th century. These destroyers formed the nucleus of the fledgling Dover Patrol, which, from its early beginnings as a modest and poorly equipped command, became one of the most important Royal Navy commands of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
U-boat
U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars. Although at times they were efficient fleet weapons against enemy naval warships, they were most effectively used in an economic warfare role (commerce raiding) and enforcing a naval blockade against enemy shipping. The primary targets of the U-boat campaigns in both wars were the merchant convoys bringing supplies from Canada and other parts of the British Empire, and from the United States, to the United Kingdom and (during the Second World War) to the Soviet Union and the Allied territories in the Mediterranean. German submarines also destroyed Brazilian merchant ships during World War II, causing Brazil to declare war on both Germany and Italy on 22 August 1942. The term is an anglicised version of the German word ''U-Boot'' , a shortening of ''Unterseeboot'' ('under-sea-boat'), though the German term refers to any submarine. Austro-Hungarian Navy submarines were also kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indicator Net
Constructed using light steel nets, indicator nets were often anchored at various depths to the sea bed around Allied naval bases during both world wars. They were intended to entangle U-boat traffic of the enemy, even though the submarines often managed to disentangle themselves and escape before being blown up by depth charges. Predominantly deployed by the Royal Navy as a means of discouraging enemy submarines from entering Allied waters, indicator nets were used extensively during World War I. Individual nets were sometimes as much as in length. Instead of being used as the sole anti-submarine measure, indicator nets were often mixed with extensive minefields and patrolling warships. Sometimes mines were attached directly to the nets, thus reducing submarine survival chances. After a submarine became entangled in the net, a marker buoy attached to the net drifted along the water's surface indicating an enemy below. The first example of indicator nets causing the destructio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dover
Dover () is a town and major ferry port in Kent, South East England. It faces France across the Strait of Dover, the narrowest part of the English Channel at from Cap Gris Nez in France. It lies south-east of Canterbury and east of Maidstone. The town is the administrative centre of the Dover District and home of the Port of Dover. Archaeological finds have revealed that the area has always been a focus for peoples entering and leaving Great Britain, Britain. The name derives from the River Dour that flows through it. In recent times the town has undergone transformations with a high-speed rail link to London, new retail in town with St James' area opened in 2018, and a revamped promenade and beachfront. This followed in 2019, with a new 500m Pier to the west of the Harbour, and new Marina unveiled as part of a £330m investment in the area. It has also been a point of destination for many illegal migrant crossings during the English Channel migrant crossings (2018-present) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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