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Lifejacket
A personal flotation device (PFD; also referred to as a life jacket, life preserver, life belt, Mae West, life vest, life saver, cork jacket, buoyancy aid or flotation suit) is a flotation device in the form of a vest or suit that is worn by a user to prevent the wearer from drowning in a body of water. The device will keep the wearer afloat with their head and mouth above the surface – they do not have to swim or tread water in order to stay afloat and can even be unconscious. PFDs are commonly worn on small watercraft or other locations where accidental entry into deep water may occur in order to provide immediate support for the wearer should they end up in the water. PFDs are also kept on large vessels for passengers to wear in an emergency in order to help them stay afloat should they be forced to enter the water or accidentally fall overboard during an evacuation. PFDs are commonly worn for swimming and other activities that require an individual to be in water. This is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal National Lifeboat Institution
The Royal National Lifeboat Institution (RNLI) is the largest of the lifeboat (rescue), lifeboat services operating around the coasts of the United Kingdom, Republic of Ireland, Ireland, the Channel Islands, and the Isle of Man, as well as on some inland waterways. Founded in 1824 as the National Institution for the Preservation of Life from Shipwreck, it soon afterwards became the Royal National Institution for the Preservation of Life from Shipwreck because of the patronage of King George IV. Royal patronage has continued up to the present day with Charles III, King Charles III. The organisation changed its name to the Royal National Lifeboat Institution on 5 October 1854 and was granted a royal charter in 1860. The RNLI is a charity based in Poole, Dorset. It is principally funded by Will (law), legacies (65%) and donations (30%). Most of its lifeboat crews are unpaid volunteers. They operate more than 400 lifeboats from 238 stations. Paid lifeguards provide services at near ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drowning
Drowning is a type of Asphyxia, suffocation induced by the submersion of the mouth and nose in a liquid. Submersion injury refers to both drowning and near-miss incidents. Most instances of fatal drowning occur alone or in situations where others present are either unaware of the victim's situation or unable to offer assistance. After successful resuscitation, drowning victims may experience breathing problems, confusion, or unconsciousness. Occasionally, victims may not begin experiencing these symptoms until several hours after they are rescued. An incident of drowning can also cause further complications for victims due to Hypothermia, low body temperature, Pulmonary aspiration, aspiration, or acute respiratory distress syndrome (respiratory failure from lung inflammation). Drowning is more likely to happen when spending extended periods of time near large bodies of water. Risk factors for drowning include alcohol use, drug use, epilepsy, minimal swim training or a complete l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gustave Trouvé
Gustave Pierre Trouvé (2 January 1839 – 27 July 1902) was a French electrical engineer and inventor in the 19th century. A polymath, he was highly respected for his innovative skill in miniaturization. Early life and education Gustave Trouvé was born on 2 January 1839 in La Haye-Descartes (Indre-et-Loire, France) into a modest family. His father, Jacques Trouvé, was a cattle dealer. In 1850, he studied to be a locksmith in Chinon College, then from 1854 to 1855 at the École des Arts et Métiers in Angers. His studies were incomplete due to poor health, and he left his local region for Paris where he obtained a job with a clockmaker. Paris From 1865 Trouvé set up a workshop in central Paris where he innovated and patented many widely differing applications of electricity, regularly reported on by popular science magazines of the time such as ''La Nature''. He invented a carbon-zinc pocket-sized battery to power his miniature electric automata which soon became very popul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buoyancy Aid
Buoyancy aids are a specialist form of ''personal flotation device'' (PFD) used most commonly by kayakers, canoeists, people practicing rafting, and dinghy sailors. They are designed as a flotation aid, rather than merely a life-saving device and have several key differences to other PFD's and lifejackets. Some buoyancy aids may not provide the same high level of protection as lifejackets. Canoeing and kayaking buoyancy aids are designed with mobility in mind. A buoyancy aid that does not fit properly can restrict a paddler's (kayaker's) range of movement, which could cause them to tire or prevent them from paddling properly. They typically have front and back foam buoyancy, with none or very little around the sides to allow for better arm movements. Types of Buoyancy Aid All canoeing and kayaking buoyancy aids are made with a foam core, instead of being inflatable like some life jackets. This removes the possibility of them bursting or not being activated in the case of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceiba Pentandra
''Ceiba pentandra'' is a tropical tree of the order (biology), order Malvales and the family (biology), family Malvaceae (previously emplaced in the family Bombacaceae), native to Mexico, Central America and the Caribbean, northern South America, and (as the variety ''C. pentandra'' var ''guineensis'') West Africa. A somewhat smaller variety has been introduced to South Asia, South and Southeast Asia, where it is cultivated. The tree and the cotton-like fluff obtained from its seed pods are commonly known in English as kapok, a Malay language, Malay-derived name which originally applied to ''Bombax ceiba'', a native of tropical Asia. In Spanish-speaking countries the tree is commonly known as "ceiba" and in French-speaking countries as fromager. The tree is cultivated for its cottonlike seed Kapok fibre, fibre, particularly in south-east Asia, and is also known as the Java cotton, Java kapok, silk-cotton or samauma. Characteristics The tree grows up to tall as confirmed by clim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scuba Diving
Scuba diving is a Diving mode, mode of underwater diving whereby divers use Scuba set, breathing equipment that is completely independent of a surface breathing gas supply, and therefore has a limited but variable endurance. The word ''scuba'' is an Acronym#Normal case and acronyms, acronym for "Self-Contained Underwater Breathing Apparatus" and was coined by Christian J. Lambertsen in a patent submitted in 1952. Scuba divers carry their own source of breathing gas, affording them greater independence and movement than surface-supplied divers, and more time underwater than freedivers. Although the use of compressed air is common, other gas blends are also used. Open-circuit scuba systems discharge the breathing gas into the environment as it is exhaled and consist of one or more diving cylinders containing breathing gas at high pressure which is supplied to the diver at ambient pressure through a diving regulator. They may include additional cylinders for range extension, de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Men Donning Kapok Suits On Ship Delivering Oil To Allies During WWII (23558647890)
A man is an adult male human. Before adulthood, a male child or adolescent is referred to as a boy. Like most other male mammals, a man's genome usually inherits an X chromosome from the mother and a Y chromosome from the father. Sex differentiation of the male fetus is governed by the SRY gene on the Y chromosome. During puberty, hormones which stimulate androgen production result in the development of secondary sexual characteristics that result in even more differences between the sexes. These include greater muscle mass, greater height, the growth of facial hair and a lower body fat composition. Male anatomy is distinguished from female anatomy by the male reproductive system, which includes the testicles, sperm ducts, prostate gland and epididymides, and penis. Secondary sex characteristics include a narrower pelvis and hips, and smaller breasts and nipples. Throughout human history, traditional gender roles have often defined men's activities and opportuni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buoyancy
Buoyancy (), or upthrust, is the force exerted by a fluid opposing the weight of a partially or fully immersed object (which may be also be a parcel of fluid). In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus, the pressure at the bottom of a column of fluid is greater than at the top of the column. Similarly, the pressure at the bottom of an object submerged in a fluid is greater than at the top of the object. The pressure difference results in a net upward force on the object. The magnitude of the force is proportional to the pressure difference, and (as explained by Archimedes' principle) is equivalent to the weight of the fluid that would otherwise occupy the submerged volume of the object, i.e. the Displacement (fluid), displaced fluid. For this reason, an object with average density greater than the surrounding fluid tends to sink because its weight is greater than the weight of the fluid it displaces. If the objec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lifeboat (rescue)
A rescue lifeboat is a boat rescue craft which is used to attend a vessel in distress, or its survivors, to rescue crew and passengers. It can be hand pulled, sail powered or powered by an engine. Lifeboats may be rigid, Inflatable boat, inflatable or rigid-inflatable combination-hulled vessels. Overview There are generally three types of boat, in-land (used on lakes and rivers), in-shore (used closer to shore) and off-shore (into deeper waters and further out to sea). A rescue lifeboat is a boat designed with specialised features for searching for, rescuing and saving the lives of people in peril at sea or other large bodies of water. In the United Kingdom and Ireland rescue lifeboats are typically vessels crewed by volunteers, intended for quick dispatch, launch and transit to reach a ship or individuals in trouble at sea. Off-shore boats are referred to as 'All-weather' and generally have a range of 150–250 nautical miles. Characteristics such as capability to withstand he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Navy
The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom of England, English and Kingdom of Scotland, Scottish kings from the early Middle Ages, medieval period, the first major maritime engagements were fought in the Hundred Years' War against Kingdom of France, France. The modern Royal Navy traces its origins to the English Navy of the early 16th century; the oldest of the British Armed Forces, UK's armed services, it is consequently known as the Senior Service. From the early 18th century until the World War II, Second World War, it was the world's most powerful navy. The Royal Navy played a key part in establishing and defending the British Empire, and four Imperial fortress colonies and a string of imperial bases and coaling stations secured the Royal Navy's ability to assert naval superior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impressment
Impressment, colloquially "the press" or the "press gang", is a type of conscription of people into a military force, especially a naval force, via intimidation and physical coercion, conducted by an organized group (hence "gang"). European navies of several nations used impressment by various means. The large size of the British Royal Navy in the Age of Sail meant impressment was most commonly associated with Great Britain and Ireland. It was used by the Royal Navy in wartime, beginning in 1664 and during the 18th and early 19th centuries as a means of crewing warships, although legal sanction for the practice can be traced back to the time of Edward I of England. The Royal Navy impressed many merchant sailors, as well as some sailors from other, mostly European, nations. People liable to impressment were "eligible men of seafaring habits between the ages of 18 and 55 years". Non-Sailor, seamen were sometimes impressed as well, though rarely. In addition to the Royal Navy's use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vice Admiral
Vice admiral is a senior naval flag officer rank, usually equivalent to lieutenant general and air marshal. A vice admiral is typically senior to a rear admiral and junior to an admiral. Australia In the Royal Australian Navy, the rank of Vice Admiral (Australia), vice admiral is held by the Chief of Navy (Australia), Chief of Navy and, when the positions are held by navy officers, by the Vice Chief of the Defence Force (Australia), Vice Chief of the Defence Force, the Chief of Joint Operations (Australia), Chief of Joint Operations, and/or the Chief of Capability Development Group. Vice admiral is the equivalent of Air Marshal (Australia), air marshal in the Royal Australian Air Force and Lieutenant General (Australia), lieutenant general in the Australian Army. Canada In the Royal Canadian Navy, the rank of vice-admiral (VAdm) (''vice-amiral'' or ''Vam'' in French language, French) is equivalent to Lieutenant-General (Canada), lieutenant-general of the Canadian Army and Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
