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Cruiser Submarine
A cruiser submarine was a very large submarine designed to remain at sea for extended periods in areas distant from base facilities. Their role was analogous to surface cruisers, cruising distant waters, commerce raiding, and scouting for the battle fleet. Cruiser submarines were successful for a brief period of World War I, but were less successful than smaller submarines during World War II. Large submarines remained vulnerable to damage from defensively equipped merchant ships (DEMS), were slow to dive if found by aircraft, offered a large sonar echo surface, and were less able to defensively maneuver during depth charge attacks.Blair, p.501 History The cruiser submarine concept originated during the unrestricted submarine warfare campaign of 1917. Three German Type U 139 submarines and seven former merchant submarines, each armed with two guns, patrolled areas distant from their North Sea bases to sink Allied merchant shipping as part of an effort to end World War I by st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surcouf FRA
Surcouf may refer to: __NOTOC__ People * Édouard Surcouf (1862–1938), French engineer, dirigible designer and pilot, and industrialist * Jacques Surcouf (1873–1934), French entomologist * Marie Surcouf (1863–1928), French balloonist and feminist * Nicolas Surcouf (1770–1848), French privateer and shipowner, brother of Robert Surcouf * Robert Surcouf (1773–1827), French privateer, slave trader and shipowner Ships * French ship ''Surcouf'', five ships named after Robert Surcouf Works about Robert Surcouf * ''Surcouf'' (film), a 1924 French silent film serial * ''Surcouf'' (opéra comique), an 1887 French opéra comique * ''The Sea Pirate ''The Sea Pirate'' (french: Surcouf, le tigre des sept mers, it, Surcouf, l'eroe dei sette mari, es, El tigre de los siete mares, also known as ''The Fighting Corsair'') is a 1966 French-Italian-Spanish adventure film directed by Sergio Bergonz ...'', original title ''Surcouf, le tigre des sept mers'', a 1966 French-Italian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type A1 Submarine
The , also called were a trio of aircraft-carrying cruiser submarines built for the Imperial Japanese Navy (IJN) during the 1930s. All three participated in the Pacific War and were lost. Design and description The submarines of the A1 type were versions of the preceding J3 class with superior range, improved aircraft installation. Unlike the earlier boats, they were equipped with extensive communication facilities to allow them to serve as squadron flagships. They displaced surfaced and submerged. The submarines were long, had a beam of and a draft of . They had a diving depth of .Bagnasco, p. 188 For surface running, the boats were powered by two diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a electric motor. They could reach on the surfaceChesneau, p. 200 and underwater. On the surface, the A1s had a range of at ; submerged, they had a range of at . The boats were armed with six internal bow torpedo tubes and carr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
14 Cm/40 11th Year Type Naval Gun
The 14 cm/40 11th Year Type naval gun was the standard surface battery for Japanese submarine cruisers of World War II. Most carried single guns, but Junsen type submarines carried two. Japanese submarines ''I-7'' and ''I-8'' carried an unusual twin mounting capable of elevating to 40°. The appended designation ''11th year type'' refers to the horizontal sliding breech block on these guns. Breech block design began in 1922, or the eleventh year of the Taishō period in the Japanese calendar. The gun fired a projectile in diameter, and the barrel was 40 calibers long (barrel length is 14 cm x 40 = 560 centimeters or 220 inches). World War II This gun was the weapon used by ''I-17'' to sink '' SS Emidio'' and to later shell the Ellwood Oil Field near Santa Barbara, California. It was also used by ''I-25'' for the Bombardment of Fort Stevens in Oregon near the mouth of the Columbia River and by ''I-26'' to shell the Estevan Point lighthouse in British Columbi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
6"/53 Caliber Gun
The 6"/53 caliber gun (spoken "six-inch-fifty-three-caliber") formed the main battery of some United States Navy light cruisers and three US submarines built during the 1920s. Description United States naval gun terminology indicates the gun fired a projectile 6 inches (15 cm) in diameter, and the barrel was 53 calibers long (barrel length is 6 inch x 53 = 318 inches or 8 meters.)Fairfield 1921 p.156 The gun with side swing Welin breech block and Smith-Asbury mechanism weighed about 10 tonnes and used a silk bag containing 44-pounds (20 kg) of smokeless powder to give a 105-pound (47.6 kg) projectile a velocity of 3000 feet per second (900 m/s). Early Marks were built-up guns with a liner, tube, full-length jacket, and 2 hoops; but the Mark 14 gun was of monobloc construction. Useful life expectancy was 700 effective full charges (EFC) per liner. Mark 13 casemate mounting These guns were installed as the primary battery on the s, and were intended for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V-boat
The V-boats were a group of nine United States Navy submarines built between World War I and World War II from 1921 to 1934 under authorization as the "fleet boat" program. The term "V-boats" as used includes five separate classes of submarines: large, fast fleet submarines (''V-1'' through ''V-3''), large long-range submarines (the minelayer ''V-4'' and two submarine cruisers ''V-5'' and ''V-6'') and three medium-sized submarines (''V-7'' through ''V-9''). The successful fleet submarines of World War II ( through ) were descended from the last three, especially ''V-7'', though somewhat larger with pure diesel-electric propulsion systems. Originally called USS ''V-1'' through ''V-9'' (SS-163 through SS-171), in 1931 the nine submarines were renamed , , , , , , , , and , respectively. All served in World War II, six of them on war patrols in the central Pacific. ''Argonaut'' was lost to enemy action. Background In the early 1910s, only 12 years after inaugurated the Navy's u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
203mm/50 Modèle 1924 Gun
With the signing of the Washington Naval Treaty of 1922 the French found themselves with no 8 inch naval gun for mounting on the designated 10,000 ton cruiser. In order to maintain their position as a major Naval Power they decided to develop one from scratch. Starting in 1924 they developed the 203mm/50 Modèle 1924 naval gun for use on the seven Treaty Class cruisers of the Marine Nationale. It was also modified for use on the ''Surcouf'' a French submarine built in the 1930s. The gun entered service on the ''Duquesne'' in 1928. The gun would remain in active service until 1948 when the last cruiser was placed in reserve. The gun was finally removed for inventory when the last treaty cruiser was towed for scrap in 1976. Design and Description The 203 mm/50 A new gun was designed starting in 1924 with a simplistic constructed of a thick auto-fretted A tube, with a shrunk jacket and breach ring. The gun was actually bored to with a length of 50 calibres. The breach was seal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Submarine Surcouf
''Surcouf'' was a large French gun-armed cruiser submarine of the mid 20th century. She carried two 8" guns as well as anti-aircraft guns and (for most of her career) a floatplane. ''Surcouf'' served in the French Navy and, later, the Free French Naval Forces during the Second World War. ''Surcouf'' disappeared during the night of 18/19 February 1942 in the Caribbean Sea, possibly after colliding with the American freighter Thompson Lykes, although this is not definitely established. She was named after the French privateer and slave trader Robert Surcouf. She was the largest submarine built until surpassed by the first Japanese Aircraft carrier submarine in 1944. Design The Washington Naval Treaty had placed strict limits on naval construction by the major naval powers in regard to displacements and artillery calibers of battleships and cruisers. However, no agreements were reached in respect of light ships such as frigates, destroyers or submarines. In addition, to ensure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
12cm (4
1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length 1. In conventions of sign where zero is considered neither positive nor negative, 1 is the first and smallest positive integer. It is also sometimes considered the first of the infinite sequence of natural numbers, followed by 2, although by other definitions 1 is the second natural number, following 0. The fundamental mathematical property of 1 is to be a multiplicative identity, meaning that any number multiplied by 1 equals the same number. Most if not all properties of 1 can be deduced from this. In advanced mathematics, a multiplicative identity is often denoted 1, even if it is not a number. 1 is by convention not considered a prime number; this was not universally accepted until the mid-20th century. Additionally, 1 is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italian Submarine Ettore Fieramosca
''Ettore Fieramosca'' was an Italian submarine which served with the Regia Marina in World War II. She was named after Ettore Fieramosca, an Italian '' condottiero'' of the 16th century. Design ''Ettore Fieramosca'' was designed by the firm Bernardis and was intended to be a cruiser submarine which carried a seaplane in a waterproof hangar and a gun; such a design was inspired by the similar (although bigger) , then under construction in France. Several prototype seaplanes were designed but not deployed and the hangar was removed in 1931. The deck gun was initially a 27-calibre OTO model of 1924, but this was later replaced by a 120 mm 45-calibre OTO model of 1931. However ''Ettore Fieramosca'' proved to be rather over-dimensioned for her armament, slower than intended—the intended speed of while surfaced was never achieved—with poor maneuverability, both surfaced and underwater, and rather poor endurance. Due to her huge cost and these shortcomings, plans to build mor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fleet Submarine
A fleet submarine is a submarine with the speed, range, and endurance to operate as part of a navy's battle fleet. Examples of fleet submarines are the British First World War era K class and the American World War II era ''Gato'' class. The term has survived in Britain to refer to modern nuclear-powered attack submarines. In the United States Navy, the term came to be used primarily for the long-range submarines that served in World War II. Examples United States The term was used by the United States Navy to distinguish submarines suitable for long range patrols in the Pacific Ocean from earlier classes such as the United States S-class submarines. The initial goal, pursued with frequent interruptions since the ''AA-1''-class (aka ''T''-class) launched 1918–19, was to produce a submarine with a surfaced speed of 21 knots to operate with the Standard-type battleships of the surface fleet. Most of the nine " V-boats" launched 1924-33 (''V-1'' through ''V-6'') were either ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage of its active battle fleet alone exceeding the next 13 navies combined, including 11 allies or partner nations of the United States as of 2015. It has the highest combined battle fleet tonnage (4,635,628 tonnes as of 2019) and the world's largest aircraft carrier fleet, with eleven in service, two new carriers under construction, and five other carriers planned. With 336,978 personnel on active duty and 101,583 in the Ready Reserve, the United States Navy is the third largest of the United States military service branches in terms of personnel. It has 290 deployable combat vessels and more than 2,623 operational aircraft . The United States Navy traces its origins to the Continental Navy, which was established during the American Revo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Type IX Submarine
The Type IX U-boat was designed by Nazi Germany's '' Kriegsmarine'' in 1935 and 1936 as a large ocean-going submarine for sustained operations far from the home support facilities. Type IX boats were briefly used for patrols off the eastern United States in an attempt to disrupt the stream of troops and supplies bound for Europe. It was derived from the Type IA, and appeared in various sub-types. Type IXs had six torpedo tubes; four at the bow and two at the stern. They carried six reloads internally and had five external torpedo containers (three at the stern and two at the bow) which stored ten additional torpedoes. The total of 22 torpedoes allowed U-boat commanders to follow a convoy and strike night after night. Some of the IXC boats were fitted for mine operations; as mine-layers they could carry 44 TMA or 66 TMB mines. Secondary armament was provided by one deck gun with 180 rounds. Anti-aircraft armament differed throughout the war. They had two periscopes in the to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_with_seven_submarines_alongside_at_San_Diego%2C_California_(USA)%2C_on_24_December_1934_(80-G-63334).jpg "Click for more on -> V-boat")
