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Very Slender Vessel
A Very Slender Vessel (VSV) is a high-speed, wave-piercing craft. It is designed to give a comfortable ride over long, high-speed transits in high seas. Normal boats travelling at high speed in rough seas can produce a very uncomfortable ride with g-force as high as 20g. Wave piercing vessels avoid this by going through waves instead of over them, at speeds that can exceed . Military North Korea It was revealed in 2015 that North Korea had under development a VSV attack boat, reported to be deployed on the western side of the Korean peninsula. It was first detected on trials by satellite surveillance late in 2014. The first images of the completed vessel were released by North Korean media in July 2018, after a visit to the Chongjin shipyard by leader Kim Jong-un. Singapore The Singapore Army operates VSV craft in special forces units. It was speculated in 2018 that they were to be replaced by new craft. United Kingdom VSV craft such as the Royal Marine VSV are used by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wave-piercing Hull
A wave-piercing boat hull has a very fine bow, with reduced buoyancy in the forward portions. When a wave is encountered, the lack of buoyancy means the hull pierces through the water rather than riding over the top, resulting in a smoother ride than traditional designs, and in diminished mechanical stress on the vessel. It also reduces a boat's wave-making resistance. Design theory calls for very long thin hulls, so in practice most are multi-hulls such as catamarans and trimarans. The main current usage areas are passenger ferries and naval ship A naval ship is a military ship (or sometimes boat, depending on classification) used by a navy A navy, naval force, or maritime force is the branch of a nation's armed forces principally designated for naval warfare, naval and amph ...s. See also * * * , later renamed MY ''Ady Gil'' * * * , a pioneer of the design * * Norwegian Cruise Line -Class Cruise Ships * hull form * * * : an racing multihull * : ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
G-force
The gravitational force equivalent, or, more commonly, g-force, is a measurement of the type of force per unit mass – typically acceleration – that causes a perception of weight, with a g-force of 1 g (not gram in mass measurement) equal to the conventional value of gravitational acceleration on Earth, ''g'', of about . Since g-forces indirectly produce weight, any g-force can be described as a "weight per unit mass" (see the synonym specific weight). When the g-force is produced by the surface of one object being pushed by the surface of another object, the reaction force to this push produces an equal and opposite weight for every unit of each object's mass. The types of forces involved are transmitted through objects by interior mechanical stresses. Gravitational acceleration (except certain electromagnetic force influences) is the cause of an object's acceleration in relation to free fall. The g-force experienced by an object is due to the vector sum of all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chongjin
Chŏngjin (; ) is the capital of North Korea's North Hamgyong Province (함경북도) and the country's third largest city. It is sometimes called the ''City of Iron''. History Prehistory According to archaeological findings near the lower areas of the Tumen river,evidence of human living traces back to the paleolithic period. Ancient and medieval history According to the Records of the Grand Historian, the region was where the tribe kingdoms of Buyeo, Mohe, Okjeo, Yilou, Yemaek and Sushen existed. The region later was the territory of Goguryeo. After the fall of Goguryeo in 668, the region was ruled by the Tang dynasty. During the reign of Balhae,the region was under the subdivision donggyeongyongwonbu. The region was under the rule of the Jin dynasty and Yuan dynasty after the fall of Balhae by the Khitans. Modern history Chongjin was a small fishing village prior to the Japanese annexation of Korea; its date of establishment is unknown. The Chinese characters for its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kim Jong-un
Kim Jong-un (; , ; born 8 January 1982) is a North Korean politician who has been Supreme Leader of North Korea since 2011 and the leader of the Workers' Party of Korea (WPK) since 2012. He is a son of Kim Jong-il, who was North Korea's second supreme leader from 1994 to 2011, and Ko Yong-hui. He is a grandson of Kim Il-sung, who was the founder and first supreme leader of North Korea from its establishment in 1948 until his death in 1994. Kim Jong-un is the first leader of North Korea to have been born in the country after its founding in 1948. From late 2010, Kim was viewed as successor to the leadership of North Korea. Following his father's death in December 2011, state television announced Kim as the "Great Successor". Kim holds the titles of General Secretary of the Workers' Party of Korea, Chairman of the Central Military Commission, and President of the State Affairs. He is also a member of the Presidium of the Politburo of the Workers' Party of Korea, the highes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Singapore Army
The Singapore Army is the land service branch of the Singapore Armed Forces (SAF). The largest of the four branches of the SAF, the Singapore Army traces its origins to the 1st Battalion, Singapore Infantry Regiment (1 SIR), which was formed in 1957, when Singapore was still under British colonial rule. After Singapore had gained independence, the Singapore Army Bill was passed in Parliament on 23 December 1965, and National Service (NS) was subsequently introduced in 1967. Mostly made up of conscripts, the Singapore Army can mobilise all operationally-ready military reservists in the event of war or national exigencies. Mission The mission of the Singapore Armed Forces (SAF) is to deter armed aggression, and to secure a swift and decisive victory should deterrence fail. The Army is also tasked with conducting peace-time operations to further Singapore's national interests and foreign policy. These range from disaster relief to peacekeeping, hostage rescue and other continge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Special Forces
Special forces and special operations forces (SOF) are military units trained to conduct special operations. NATO has defined special operations as "military activities conducted by specially designated, organized, selected, trained and equipped forces using unconventional techniques and modes of employment". Special forces emerged in the early 20th century, with a significant growth in the field during the Second World War, when "every major army involved in the fighting" created formations devoted to special operations behind enemy lines. Depending on the country, special forces may perform functions including airborne operations, counter-insurgency, counter-terrorism, foreign internal defense, covert ops, direct action, hostage rescue, high-value targets/manhunt, intelligence operations, mobility operations, and unconventional warfare. In Russian-speaking countries, special forces of any country are typically called , an acronym for "special purpose". In the United State ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Marine VSV
The Royal Marine VSV is a Very Slender Vessel in British service. A small number of the craft were built for service with the Royal Marines The Corps of Royal Marines (RM), also known as the Royal Marines Commandos, are the UK's special operations capable commando force, amphibious light infantry and also one of the five fighting arms of the Royal Navy. The Corps of Royal Marine ... and Special Boat Service. They were built in two versions, known as the VSV 16m 145 class and the follow-up version, the VSV 22m. References {{reflist Royal Marines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Marines
The Corps of Royal Marines (RM), also known as the Royal Marines Commandos, are the UK's special operations capable commando force, amphibious light infantry and also one of the five fighting arms of the Royal Navy. The Corps of Royal Marines can trace their origins back to the formation of the "Duke of York and Albany's maritime regiment of Foot" on 28 October 1664, and can trace their commando origins to the formation of the 3rd Special Service Brigade, now known as 3 Commando Brigade on 14 February 1942, during the Second World War. As a specialised and adaptable light infantry and commando force, Royal Marine Commandos are trained for rapid deployment worldwide and capable of dealing with a wide range of threats. The Corps of Royal Marines is organised into 3 Commando Brigade and a number of separate units, including 47 Commando (Raiding Group) Royal Marines, and a company-strength commitment to the Special Forces Support Group. The Corps operates in all environments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Special Boat Service
The Special Boat Service (SBS) is the special forces unit of the United Kingdom's Royal Navy. The SBS can trace its origins back to the Second World War when the Army Special Boat Section was formed in 1940. After the Second World War, the Royal Navy formed special forces with several name changes—Special Boat Company was adopted in 1951 and re-designated as the Special Boat Squadron in 1974—until on 28 July 1987 when the unit was renamed as the Special Boat Service after assuming responsibility for maritime counter-terrorism. Most of the operations conducted by the SBS are highly classified, and are rarely commented on by the British government or the Ministry of Defence, owing to their sensitive nature. The Special Boat Service is the maritime special forces unit of the United Kingdom Special Forces and is described as the sister unit of the British Army 22nd Special Air Service Regiment (22nd SAS), with both under the operational control of the Director Special Forces. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
