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Reef Knot
The reef knot, or square knot, is an ancient and simple binding knot used to secure a rope or line around an object. It is sometimes also referred to as a Hercules knot or Heracles knot. The knot is formed by tying a left-handed overhand knot between two ends, instead of around one end, and then a right-handed overhand knot via the same procedure, or vice versa. A common mnemonic for this procedure is "right over left; left over right", which is often appended with the rhyming suffix "... makes a knot both tidy and tight". Two consecutive overhands tied as described above of the same handedness will make a granny knot. The working ends of the reef knot must emerge both at the top or both at the bottom, otherwise a thief knot results. The reef knot is not recommended for List of bend knots, tying two ropes together, because of the potential instability of the knot when not stabilized; something that has resulted in many deaths (see #Misuse as a bend, Misuse as a bend). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Thief Knot
The thief knot resembles the reef knot (square knot) except that the free, or bitter ends are on opposite sides. It is said that sailors would secure their belongings in a ditty bag using the thief knot, often with the ends hidden. If another sailor went through the bag, the odds were high the thief would tie the bag back using the more common reef knot, revealing the tampering, hence the name. It is difficult to tie by mistake, unlike the granny knot, unless one attempts to tie a square knot in a similar manner to a sheet bend (which is the correct way to tie a thief knot), then it is possible to tie accidentally. The thief knot is much less secure than the already insecure reef knot. It unties itself if the lines are pulled when the same action would seize a reef knot. (knot number 1207) Tying Related knots See also *List of binding knots *List of knots This list of knots includes many alternative names for common knots and lashings. Knot names have evolved over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Misuse As A Bend
Abuse is the act of improper usage or treatment of a person or thing, often to unfairly or improperly gain benefit. Abuse can come in many forms, such as: physical or verbal maltreatment, injury, assault, violation, rape, unjust practices, crimes, or other types of aggression. To these descriptions, one can also add the Kantian notion of the wrongness of using another human being as means to an end rather than as ends in themselves. Some sources describe abuse as "socially constructed", which means there may be more or less recognition of the suffering of a victim at different times and societies. Types and contexts of abuse Abuse of authority Abuse of authority includes harassment, interference, pressure, and inappropriate requests or favors. Abuse of corpse Necrophilia involves possessing a physical attraction to dead bodies that may led to acting upon sexual urges. As corpses are dead and cannot give consent, any manipulation, removal of parts, mutilation, or sexual ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Bandage
A bandage is a piece of material used either to support a medical device such as a dressing or splint, or on its own to provide support for the movement of a part of the body. When used with a dressing, the dressing is applied directly on a wound, and a bandage is used to hold the dressing in place. Other bandages are used without dressings, such as elastic bandages that are used to reduce swelling or provide support to a sprained ankle. Tight bandages can be used to slow blood flow to an extremity, such as when a leg or arm is bleeding heavily. Bandages are available in a wide range of types, from generic cloth strips to specialized shaped bandages designed for a specific limb or part of the body. Bandages can often be improvised as the situation demands, using clothing, blankets or other material. In American English, the word ''bandage'' is often used to indicate a small gauze dressing attached to an adhesive bandage. Types Gauze bandage (common gauze roller bandage) T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Furl (sailing)
Furling refers to stowing a sail into a neat package after it has been ed, but leaving it still fastened in the position from which it can be set. For a sail with a boom, this usually means flaking the sail down over the boom and securing it with sail ties. The headsail of a sloop (where roller furling is not fitted) is often lashed to a guardrail or along a bowsprit. A square sail is furled by gathering it more closely to the yard than is achieved by the buntlines and clewlines and securing it to the yard with gaskets image:gaskets.jpg, Some seals and gaskets A gasket is a Seal (mechanical), mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage from or into the joined objects while under compression (physical), .... When bending a sail onto a yard, a square sail is usually furled at deck level, being tied to itself with temporary lashings, so as to provide a controllable package to haul aloft and fasten to the yard. Less commo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Reefing
Reefing reduces the area of a sail, usually by folding or rolling one edge of the canvas in on itself and attaching the unused portion to a Spar (sailing), spar or a , as the primary measure to preserve a sailing vessel's stability in strong winds. Restoring full sail area is termed ''shaking out'' a . Whereas Fore-and-aft rig, fore-and-aft rigged vessels store the unused portion of the sail on a boom (sailing), boom (below the sail), square rig, square-rigged vessels stow the unused portion on a spar above the sail. Reefing may occur by rolling the sail around its Sail components, luff or Foot (sailing), foot, either on a rotating stay or within a spar. Fore-and-aft rigs Sails may have built-in alternative attachment points that allow their area to be reduced. In a mainsail, reefing cringles may be installed in the sail; a cruising boat will typically have two to three pairs. These are pulled down to the boom to form a new tack and clew, reducing the sail's area. The first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Friendship Knot
Friendship is a relationship of mutual affection between people. It is a stronger form of interpersonal bond than an "acquaintance" or an "association", such as a classmate, neighbor, coworker, or colleague. Although there are many forms of friendship, certain features are common to many such bonds, such as choosing to be with one another, enjoying time spent together, and being able to engage in a positive and supportive role to one another. Sometimes friends are distinguished from family, as in the saying "friends and family", and sometimes from lovers (e.g., "lovers and friends"), although the line is blurred with friends with benefits. Similarly, being in the '' friend zone'' describes someone who is restricted from rising from the status of friend to that of lover (see also unrequited love). Friendship has been studied in academic fields, such as communication, sociology, social psychology, anthropology, and philosophy. Various academic theories of friendship have be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Square Knot (mathematics)
In knot theory, the square knot is a composite knot obtained by taking the connected sum of a trefoil knot with its reflection. It is closely related to the granny knot, which is also a connected sum of two trefoils. Because the trefoil knot is the simplest nontrivial knot, the square knot and the granny knot are the simplest of all composite knots. The square knot is the mathematical version of the common reef knot. Construction The square knot can be constructed from two trefoil knots, one of which must be left-handed and the other right-handed. Each of the two knots is cut, and then the loose ends are joined together pairwise. The resulting connected sum is the square knot. It is important that the original trefoil knots be mirror images of one another. If two identical trefoil knots are used instead, the result is a granny knot. Properties The square knot is amphichiral, meaning that it is indistinguishable from its own mirror image. The crossing number of a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Slip Knot
The slip knot is a stopper knot which is easily undone by pulling the tail ( working end). The slip knot is related to the running knot, which will release when the standing end is pulled. Both knots are identical and are composed of a slipped overhand knot, where a bight allows the knot to be released by pulling on an end; the working end for a slip knot, and the standing end for a running knot. The slip knot is used as a starting point for crochet and knitting. Standard creation The slip knot is formed by first creating a loop in the shape of a "p". Place a hand or hook through the loophole and grab a bight on the working end. Draw this bight through the first loop. Seat the knot and pull the bight until a small loop is created. See also * Knot * List of knots This list of knots includes many alternative names for common knots and lashings. Knot names have evolved over time, and there are many conflicting or confusing naming issues. The overhand knot, for example ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Shoelace Knot
The shoelace knot, or bow knot, is commonly used for tying shoelaces and bow ties. The shoelace knot is a doubly slipped reef knot formed by joining the ends of whatever is being tied with a half hitch, folding each of the exposed ends into a loop ( bight) and joining the loops with a second half hitch. The size of the loops and the length of the exposed ends are adjusted when the knot is tied. It has the stability of the reef knot but is significantly easier to untie, simply by pulling the ends away from the center of the knot. The loops are sometimes referred to as "bunny ears", especially when the knot is taught to children. Techniques There are several ways to tie a shoelace knot; each starts with the tying of a half hitch, and requires attention or some habitual mechanism for arriving at a knot that is an elaboration of the reef (or square) knot rather than of the granny (or lubber's) knot. If the bow is horizontal across the opening the bow is correctly and securely ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Richard Henry Dana Jr
Richard Henry Dana Jr. (August 1, 1815 – January 6, 1882) was an American lawyer and politician from Massachusetts, a descendant of a colonial family, who gained renown as the author of the classic American memoir ''Two Years Before the Mast'' and as an attorney who successfully represented the U.S. government before the U.S. Supreme Court during the Civil War in the ''Prize Cases''. Both as a writer and as a lawyer, he was a champion of the downtrodden, from seamen to fugitive slaves and freedmen. Early life and education Dana was born in Cambridge, Massachusetts, on August 1, 1815 into a family that had settled in colonial America in 1640, counting Anne Bradstreet among its ancestors.Sullivan, 1972, p. 98. His father was the poet and critic Richard Henry Dana Sr. As a boy, Dana studied in Cambridgeport under a strict schoolmaster named Samuel Barrett, alongside fellow Cambridge native and future writer James Russell Lowell. Barrett was infamous as a disciplinarian who punish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Sailor
A sailor, seaman, mariner, or seafarer is a person who works aboard a watercraft as part of its crew, and may work in any one of a number of different fields that are related to the operation and maintenance of a ship. While the term ''sailor'' has its etymological roots from sailing, that is a time when sailing ships were the main mode of transport at sea, it now refers to the personnel of all watercraft regardless of the type of vessel, boat or ship. It encompasses people who operate ships professionally, be it for a military (navy) or civilian (merchant navy) or for Sailing (sport), sports or recreation. In a navy, there may be further distinctions: ''sailor'' may refer to any member of the navy even if they are based on land, while Seaman (rank), ''seaman'' may refer to a specific enlisted rank. Additionally, fisherman are seen as a distinct type of sailor, that is those engaged in fishing. Sailors have existed from the earliest periods in history as people as people used b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
