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Sailing ships frequently encounter difficult conditions, whether by storm or combat, and the crew frequently called upon to cope with accidents, ranging from the parting of a single line to the whole destruction of the rigging, and from running aground to fire.
The sailboat is particularly vulnerable to capsizing or hitting a shoal or rock in the water when the steering fails. In heavy chop there is a lot of force on the rudder as it is pushed by the water. If the ship is flying a Spinnaker and it loses steering, the boat will most likely broach (head up into wind), which will, on most boats, cause a capsize in heavy weather. It is possible to sail smaller dinghies without a rudder using only sail adjustment.
Running rigging is often subject to parting, especially during bad weather, or when attempting to carry too much sail in a strong wind. For instance, the brace on the weather side is under a considerable strain, and its parting would allow the entire yard to swing free, a rather ugly prospect for a spar up to 30 meters long. In general, for each line there is a procedure to a) reduce the forces at play, b) use other lines to bring loose items under control, and c) run a replacement line (retying is not usually an option, since the knot will not fit through the blocks). The most critical lines will sometimes have a backup in the form of a "preventer" line serving the same function.
Standing rigging is a structural element that holds up the masts, and loss of standing rigging puts them at risk of being sprung (cracked) or simply snapped off. By the end of the age of sail, most stays had preventers, and warships equipped themselves with "rigging stoppers" or "fighting stoppers", small lengths of rope arranged so they could be attached to shrouds quickly and tightened.
In the days of wooden construction, sprung masts were a serious problem, because their structural integrity was compromised, and the next gust of wind could easily bring them down. Upper masts were usually just replaced by spares carried for the purpose. The usual recourse for the lower mast was to "fish" it by lashing a special set of spars to the mast along the cracked area.
If the mast was gone altogether, it had to be replaced with a jury rig assembled from whatever spars were available.
On a ship, cargo must be stowed evenly so that the ship floats upright. All ships are vulnerable to cargo shifting, causing the ship to develop a list to one side. However sailing ships are particularly vulnerable because the ship naturally heels over in reaction to the force of the wind on the sails. If the cargo is not adequately secured the cargo may fall to the leeward side of the ship. Loose cargos (e.g. grain) flow downhill like water if not adequately secured (e.g. by shifting boards) and are particularly prone to shifting. If a large quantity of cargo shifts the ship may develop such a heavy list that she capsizes. A catastrophic cargo shift caused the loss of the tall ship Pamir in 1957.
Ship grounding is a type of marine accident that involves the impact of a ship on the seabed, resulting in damage of the submerged part of her hull and in particularly the bottom structure, potentially leading to water ingress and compromise of the ship's structural integrity and stability. Grounding induces extreme loads onto marine structures and is a marine accident of profound importance due to its impact:
A capsize is when a vessel rolls over beyond the limit angle of positive static stability. [1] The severity of a capsize depends on the size and design of a vessel. A small dinghy is designed to capsize and be righted by her crew. Yachts are typically built to right themselves even if heeled over beyond 90 degrees. However a large sailing ship will typically lose all stability at a smaller angle of heel, and will be vulnerable to downflooding and sinking if heeled beyond this point.
Ballasted monohull sailing yachts will capsize very easily if they loose their external ballast keel. Fortunately, this is rare, but if it does, it's a life-threatening danger, as seen in the case of the sunken Cheeki Rafiki .
Fire is a serious threat to all ships, but to a ship made of wood, rope, and canvas, it was the greatest danger of all. Cooking fires in the galley were watched constantly, and put out instantly if the weather turned ugly, or an enemy ship appeared in the distance. Warships had an elaborate set of procedures for handling their gunpowder; the magazines were deep in the ship and the lanterns kept in another room, with a window between.
The introduction of steam power in the mid-19th century was attended by the use of "fire-engines" consisting of pumps and hoses. Even so, fire was fatal to a ship far more often than not.
A sailboat or sailing boat is a boat propelled partly or entirely by sails and is smaller than a sailing ship. Distinctions in what constitutes a sailing boat and ship vary by region and maritime culture.
A sail plan is a description of the specific ways that a sailing craft is rigged. Also, the term "sail plan" is a graphic depiction of the arrangement of the sails for a given sailing craft.
A jibe (US) or gybe (Britain) is a sailing maneuver whereby a sailing vessel reaching downwind turns its stern through the wind, which then exerts its force from the opposite side of the vessel. For square-rigged ships, this maneuver is called wearing ship.
Boat building is the design and construction of boats and their systems. This includes at a minimum a hull, with propulsion, mechanical, navigation, safety and other systems as a craft requires.
Pamir was a four-masted barque built for the German shipping company F. Laeisz. One of their famous Flying P-Liners, she was the last commercial sailing ship to round Cape Horn, in 1949. By 1957, she had been outmoded by modern bulk carriers and could not operate at a profit. Her shipping consortium's inability to finance much-needed repairs or to recruit sufficient sail-trained officers caused severe technical difficulties. On 21 September 1957, she was caught in Hurricane Carrie and sank off the Azores, with only six survivors rescued after an extensive search.
Running rigging is the rigging of a sailing vessel that is used for raising, lowering, shaping and controlling the sails on a sailing vessel—as opposed to the standing rigging, which supports the mast and bowsprit. Running rigging varies between vessels that are rigged fore and aft and those that are square-rigged.
A yard is a spar on a mast from which sails are set. It may be constructed of timber or steel or from more modern materials such as aluminium or carbon fibre. Although some types of fore and aft rigs have yards, the term is usually used to describe the horizontal spars used on square rigged sails. In addition, for some decades after square sails were generally dispensed with, some yards were retained for deploying wireless (radio) aerials and signal flags.
This is a glossary of nautical terms; an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water, but not necessarily on the sea. Some remain current, while many date from the 17th to 19th centuries. The word nautical derives from the Latin nauticus, from Greek nautikos, from nautēs: sailor, from naus: ship.
Square rig is a generic type of sail and rigging arrangement in which the primary driving sails are carried on horizontal spars which are perpendicular, or square, to the keel of the vessel and to the masts. These spars are called yards and their tips, outside the lifts, are called the yardarms. A ship mainly rigged so is called a square-rigger.
Capsizing or keeling over occurs when a boat or ship is rolled on its side or further by wave action, instability or wind force beyond the angle of positive static stability or it is upside down in the water. The act of recovering a vessel from a capsize is called righting. Capsize may result from broaching, knockdown, loss of stability due to cargo shifting or flooding, or in high speed boats, from turning too fast.
In sailing, a boom is a spar (pole), along the foot of a fore and aft rigged sail, that greatly improves control of the angle and shape of the sail. The primary action of the boom is to keep the foot flatter when the sail angle is away from the centerline of the boat. The boom also serves as an attachment point for more sophisticated control lines. Because of the improved sail control it is rare to find a non-headsail without a boom, but lateen sails, for instance, are loose-footed. In some modern applications, the sail is rolled up into the boom for storage or reefing.
In sailing, hiking is the action of moving the crew's body weight as far to windward (upwind) as possible, in order to decrease the extent the boat heels. By moving the crew's weight to windward, the moment of that force around the boat's center of buoyancy is increased. This opposes the heeling moment of the wind pushing sideways against the boat's sails. It is usually done by leaning over the edge of the boat as it heels. Some boats are fitted with equipment such as hiking straps and trapezes to make hiking more effective.
The spritsail is a four-sided, fore-and-aft sail that is supported at its highest points by the mast and a diagonally running spar known as the sprit. The foot of the sail can be stretched by a boom or held loose-footed just by its sheets. A spritsail has four corners: the throat, peak, clew, and tack. The Spritsail can also be used to describe a rig that uses a spritsail.
In dinghy sailing, a boat is said to be turtling or to turn turtle when the boat is fully inverted with the mast pointing down to the lake bottom, riverbed, or seabed. The name stems from the appearance of the upside-down boat, similar to the carapace of a sea turtle. The term can be applied to any vessel; turning turtle is less frequent but more dangerous on ships than on smaller boats. It is rarer but more hazardous for multihulls than for monohulls, because of multihulls are harder to flip in both directions. Measures can be taken to prevent a capsize from becoming a turtle.
The limit of positive stability (LPS) or angle of vanishing stability (AVS) is the angle from the vertical at which a boat will no longer stay upright but will capsize, becoming inverted, or turtled.
Potosi was a five-masted steel barque built in 1895 by Joh. C. Tecklenborg ship yard in Geestemünde, Germany, for the sailing ship company F. Laeisz as a trading vessel. Its primary purpose was as a "nitrate clipper" collecting guano in South America for use in chemical companies in Germany. As its shipping route was between Germany and Chile, it was designed to be capable of withstanding the rough weather encountered around Cape Horn.
Shipwrecking is an event that causes a shipwreck, such as a ship striking something that causes the ship to sink; the stranding of a ship on rocks, land or shoal; poor maintenance; or the destruction of a ship either intentionally or by violent weather.
Dismasting, also spelled demasting, occurs to a sailing ship when one or more of the masts responsible for hoisting the sails that propel the vessel breaks. Dismasting usually occurs as the result of high winds during a storm acting upon masts, sails, rigging, and spars. Over compression of the mast owing to tightening the rigger too much and g-forces as a consequence of wave action and the boat swinging back and forth can also be result in a dismasting. Dismasting does not necessarily impair the vessel's ability to stay afloat, but rather its ability to move under sail power. Frequently, the hull of the vessel remains intact, upright and seaworthy.
The following outline is provided as an overview of and topical guide to sailing:
This is a glossary of nautical terms; an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water, but not necessarily on the sea. Some remain current, while many date from the 17th to 19th centuries. The word nautical derives from the Latin nauticus, from Greek nautikos, from nautēs: sailor, from naus: ship.