A sail may be classified in a variety of ways, including by its orientation to the vessel (e.g. noun An upstanding curl or roll of hair over the forehead, like the roach of a sail. To move briskly and gracefully through the air. The battens are attached loosely to the mast with lines called batten parrels that allow fore-and-aft motion as the sail is controlled by individual sheets leading to multiple battens.[32]. [4], A square rig is a 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—the sails themselves are not square but are symmetrically quadrilateral. A fore-and-aft triangular mainsail achieves a better approximation of a wing form by extending the leech aft, beyond the line between the head and clew in an arc called the roach, rather than having a triangular shape. roach synonyms, roach pronunciation, roach translation, English dictionary definition of roach. ) It provides a useful increase in sail area, but it comes at a price - battens. I have received interesting comments from Estar at a different topic.. roach: [noun] a curved cut in the edge of a sail to prevent chafing or to secure a better fit. It is commonly used for plastics, and especially for joining dissimilar materials.[29]. These sails are officially called “Large Roach … Full-height battens support a larger roach, but make the furled sail more bulky. The sail may be attached to the boat via a combination of mast, spars and ropes. For a sewn, textile sail this is done through thread and is limited by the strength of the thread and the strength of the hole in the textile through which it passes. Well, if you draw an imaginary straight line from the masthead to the outer end of the boom, any sail area that protrudes aft of that line is a roach. Three sides of gaff-rigged sails are attached to a mast or spar. These are called reef pendents that drop through a comb on the boom, where they are secured, as needed. The roach is the area of the sail aft of a line between the head and the clew. High Power for Multihulls. (Nautical Terms) the amount by which the leech of a fore-and-aft sail projects beyond an imaginary straight line... 2. I want this for a 31' HR Monsun, fore-foot cut full keel, original sail little over 20m2. High Roach Mainsail for sale 3Di Endurance. There are two basic configurations, cross-cut and radial. [28], Conventional sail panels are sewn together. [1], Features that define a (ship) sail's shape and function. An edible freshwater cyprinid fish (Rutilus rutilus) of northern Europe. Roach Crossing broadcasts a large selection of roaches for sale in the hopes of expanding the hobby of insect cultivation. Those triangular sails that are attached to both a mast along the luff and a boom along the foot have depth, known as draft or draught, which results from the luff and foot being curved, rather than straight as they are attached to those spars. Login . Sails may be classified as either triangular, which describes sails that either come to one point of suspension at the top or where the sail comes to a point at the forward end, or quadrilateral, which includes sails that are attached to a spar at the top and have three other sides, or as square. [3] Measures for seam structural attributes—shown with a typical value for a sewn seam—include:[29], Whereas textiles are typically sewn together, other sail materials may be ultrasonically welded—a technique whereby high-frequency ultrasonic acoustic vibrations are locally applied to workpieces being held together under pressure to create a solid-state weld. Roach The bulge in a sail's Leech when the cut is rounded to increase sail area. Full Performance - Full Control The sail pictured below has a special headboard included with this luff hardware. It adds approximately 15% more sail … Sails have a variety of treatments at their edges, either to attach the sail to a stay, spar or mast or to prevent a free edge from fluttering or fraying. fore-and-aft) and its shape, (e.g. Mainsails are more likely to be bi-radial, since there is very little stress at the tack, whereas head sails (spinnakers and jibs) are more likely to be tri-radial, because they are tensioned at their corners. [12], Different categories of sails are reefed (reduced in size) in different manners and therefore have different fixtures that achieve shortening of sail. A ship mainly so rigged is called a square-rigger.[6]. : Other hardware includes cam cleats, used to tension luff and foot lines. To be impelled or driven forward by the action of wind upon sails, as a ship on water; to be impelled on a body of water by steam or other power. The principal reason is we want to support roach, the material added to the back edge of the sail, beyond an imaginary straight line drawn between the head and clew of On this boat the entire sail is about 1.5 inches further aft from the mast than it would be if the sail … Define roach. Only the clews on a square sail take a comparatively large amount of stress, because the head is supported along the spar. A bi-radial sail has panels radiating from two of three corners; a tri-radial sail has panels radiating from all three corners. A roach provides extra power to a sail 2. The High Roach Mainsail profile fits between a standard cruising mainsail and a square top racing mainsail, and it is the preferred profile for many cruising cats and multihulls. Sails usually have fittings attached to them that transmit force through a small area. See more. A roach provides extra power to a sail The top of all sails is called the head, the leading edge is called the luff, the trailing edge is the leech, and the bottom edge is the foot. (Nautical Terms) the curve at the foot of a square sail The names of corners of sails vary, depending on shape and symmetry. Under the IOR, permitted batten lengths limited roach to about 11 percent of M. Full-battened sails carry much more roach, and this is included in a builder’s published sail areas. [1], Junk rigs feature full-length battens that facilitate short-handed sail handling, including reefing. This additional part of the sail is known as the roach; mainsails usually have roaches, but they are very occasionally found on specialized jibs as well. High Roach Mainsail. Roach Sailing Association Home Newsletters Boats Racing & Cruising Social Contacts Links; The RSA is a small friendly club with members who sail, or have at some time sailed the Roach river in Essex. The shape of a sail is defined by its edges and corners in the plane of the sail, laid out on a flat surface. Such cloth is typically specified by deniers for warp and fill (weft), e.g. Mast Furling Mainsail. Roach definition, a cockroach. The greater the departure from the straight line, the greater the "hollow" in the roach. Evolved from the original 3Di sail and continually refined, 3Di Endurance represents the state of the art in high performance and durability. [1][2], Triangular sails have names for each of three edges and three corners, explained below. Sails are typically constructed out of flexible material that is shaped by various means, while in use, to offer an appropriate airfoil, according to the strength and apparent direction of the wind. Roach is sail area that lies outside of a straight line drawn from head to clew on a mainsail. n. ... (Nautical Terms) the amount by which the leech of a fore-and-aft sail projects beyond an imaginary straight line between the clew and the head. What is a Large Roach Headsail or “Tweener” sail? Other sails are constructed directly from fibers, filaments and films. [1] The most common use of sail battens is in the roach of a mainsail. The fact is, you don't need battens in a mainsail. (paleontology) an outward projection of the. 2. Draft creates a more efficient airfoil shape for the sail. [1] Battens are also found in jibs of beach-cat catamarans. [13][14] The roach allows the foot of the sail to clear stays coming up the mast, as the sails are rotated from side to side.[15]. [3], Gaff, gunter, lug, junk and some sprit sails have four sides and are set fore and aft so that one edge is leading into the wind, forming an asymmetric quadrilateral shape. On this boat the entire sail is about 1.5 inches further aft from the mast than it would be if the sail … High-tenacity Dacron comes in multiples of 220, 350 and 570 deniers, whereas low-tenacity Dacron comes in multiples of 150, 250, and 400 deniers. Triangular cross-cut sail panels are designed to meet the mast and stay at an angle from either the warp or the weft (on the bias) to allow stretching along the luff, but minimize strutting on the luff and foot, where the fibers are aligned with the edges of the sail. The mainsheet not only adjusts the angle of the sail to the wind, it also affects twist when sailing close to the wind. Negative round is equivalent to hollowing that edge of the sail. Sails are constructed of fabrics that may be woven or manufactured as films. When sailing off the wind, the kicker takes over. Rigs with such sails include Bermuda, cutter, lateen and vessels with mixed sail plans that include jibs and other staysails. Hello, we are thinking about extra large roach (overlapping the backstay) mainsail to expand our sail area (not that it would be bad now). A reefing line typically runs through the reef point on the luff to quickly secure the new clew. Anything resembling a sail, such as a wing. As nouns the difference between sail and roach is that sail is (nautical) a piece of fabric attached to a boat and arranged such that it causes the wind to drive the boat along the sail may be attached to the boat via a combination of mast, spars and ropes while roach is a small freshwater fish in the carp family (cyprinidae ), (taxlink). The batten extends the leech past the line that runs from the head and the clew of the sail to create a wider sail towards the top. To move through or on the water; to swim, as a fish or a waterfowl. Most triangular sails are classified as asymmetrical and fore and aft; symmetric spinnakers are symmetrical triangular sails that are designed for off-the-wind use. Traditional canvas square and gaff-rigged sails have one or more rows of reefing lines that pass through the sail, which reach around the sail that has been gathered in to reduce its size and secure the remaining unreefed sail to the spar (square rig) or boom (gaff rig). Sail seams are often overlapped between panels and sewn with zig-zag stitches that create many connections per unit of seam length. Mainsheet. The head of a triangular sail may have a rigid headboard riveted to it in order to transfer load from the sail to the halyard. While it requires the support of those pesky battens (the batten length must be at least 3 times longer than the roach it is supporting), roach enhances mainsail performance. Roach is sail area that lies outside of a straight line drawn from head to clew on a mainsail. Naming conventions are consistent with triangular sails, except for the top edge and corners, as explained below. DICTIONARY.COM; THESAURUS.COM; MEANINGS. This design combines the high performance of a large roach, with battens parallel to the boom for easy stacking. [3][1], Woven materials, like Dacron, may be specified as either high or low tenacity, as indicated, in part by their denier count (a unit of measure for the linear mass density of fibers). [1] Offshore cruising mainsails sometimes have a hollow leech (the inverse of a roach) to obviate the need for battens and their ensuing likelihood of chafing the sail. Text is available under the Creative Commons Attribution/Share-Alike License; additional terms may apply. Sails are tensile structures, so the role of a seam is to transmit a tensile load from panel to panel. Cross-cut sails have the panels sewn parallel to one another, often parallel to the foot of the sail, and are the less expensive of the two sail constructions. Whereas conventional sails form an airfoil with one layer of fabric, wingsails comprise a structure that has material on both sides to form an airfoil—much like a wing placed vertically on the vessel—and are beyond the scope of this article. These become the new tack and clew. Size quantifies the two dimensional aspects of the sail: luff, leech and foot lengths, and the sail’s roach profile. The sail pictured below has a special headboard included with this luff hardware. Other sails are constructed directly from fibers, filaments and films. Draft can also be induced in triangular staysails by adjustment of the sheets and the angle from which they reach the sails.[23]. [3], Higher-performance sails may be laminated, constructed directly from multiple plies of filaments, fibers, taffetas, and films—instead of woven textiles—and adhered together. The Roach is supported and shaped by battens. Sailcloth is typically heat-shrunk to tighten the weave and then receives a chemical bonding finish of melamine. (Nautical Terms) the curve at the foot of a square sail Under the IOR, permitted batten lengths limited roach to about 11 percent of M. Full-battened sails carry much more roach, and this is included in a builder’s published sail areas. The floating organ of siphonophores, such as the Portuguese man-of-war. This, along with the broad-seaming of the sail, is one of the methods used to create shape in the sail. The sail are often assembled of multiple panels that are arrayed in a manner that transfers the load from the wind to the sail's attachment points—a combination of corners and edges—that transmits the load into the mast and powers the boat. [34], Tell-tales are pieces of yarn, thread or tape that are affixed to sails to help visualize airflow over their surfaces. The Roach. The amount of sail area that projects backwards from the straight line from the head to the clew (see diagram) is called roach. Sails are constructed of fabrics that may be woven or manufactured as films. Molded sails are laminated sails formed over a curved mold and adhered together into a shape that does not lie flat. Generally, more roach will have more twist. You only need battens if the sail has a roach. The connecting shackle runs through a grommet at each of these points. Large Roach Headsails or “Tweener” sails are sails that have an LPG greater than 1.1 x J of the LRH and a half width of more than 50% but less than 75% of the foot when measured as a spinnaker. [3], Where a sail may rub against a spreader on the mast, a spreader patch may be placed on a jib, when it overlaps with the mast,[26] or on the mainsail, where it may interfere when furled[27] or when the sail is backwinded against the mast. Large Roach Headsails (LRH) or “Tweener” sails are sails that have an LPG greater than 1.1 x J of the LRH and a half width of more than 50% but less than 75% of the foot when measured as a spinnaker. noun A rash, or eruption on the skin. • (v. t.) To cut off, as a horse`s mane, so that the part left shall stand upright. roach: [noun] a curved cut in the edge of a sail to prevent chafing or to secure a better fit. Information and translations of roach in the most comprehensive dictionary definitions resource on the web. The edges may be curved, either to extend the sail's shape as an airfoil or to define its shape in use. Roach • (n.) A cockroach. They also may be classified as symmetrical (square sails and symmetric spinnakers) or asymmetrical (most other sails). Sail stowage Hardware. (US, slang, smoking) A butt of a marijuana cigarette. It bothers me that if I replaced the mainsail with a full-batten main with substantial roach, which would be my preference, then it seems to … [31] Most battens are fiberglass pultrusions with a thin, rectangular cross section. Any of various similar fishes, such as some North American freshwater sunfishes. [12], Roach is a term also applied to square sail design—it is the arc of a circle above a straight line from clew to clew at the foot of a square sail, from which sail material is omitted. A tower-like structure found on the dorsal (topside) surface of submarines. Style refers to the material used to build a sail. Roach. To ride in a boat, especially a sailboat. Shape describes the three dimensional aerodynamic form built into these perimeter dimensions, which is commonly referred to as the Mold Shape. https://en.wikipedia.org/w/index.php?title=Sail_components&oldid=1001753198, Creative Commons Attribution-ShareAlike License, This page was last edited on 21 January 2021, at 04:22. [25], Square sails and gaff-rigged sails also have grommets at corners. (uncountable) The power harnessed by a sail or sails, or the use this power for travel or transport. There may be grommets along the line between the new tack and clew that allow ties to pass through around the boom. Boom Furling Mainsail. The shape of a sail is seldom a perfect triangle. Positive round (roach) of the luff, foot, leech and gaff extend the sail outside of the straight edge line. roach teriminin İngilizce İngilizce sözlükte anlamı A butt of a marijuana cigarette a cockroach A small freshwater fish in the carp family (Cyprinidae), Rutilus rutilus A curve in the bottom of a sail to prevent it snagging deck equipment Convenience without Compromise. So what's a roach? noun Nautical, a concave curve in the leech or foot of a square sail, to improve the fit of the sail. [24], Conventional sails comprise panels, which are most often stitched together, at other times adhered. Our clubhouse is the waterside, moorings, anchorage or pub. Note that the mainsail calculation doesn’t include roach, the area between the P*E/2 triangle and the sail’s leech. Plural. [25], Radial sails have panels that "radiate" from corners in order to efficiently transmit stress and are typically higher-performance than cross-cut sails. Additional features include tell-tales, windows—used on dinghy sails[33]—and lettering and other graphics that include sail numbers and manufacturers logos, etc. The grommet that becomes the new tack is typically hooked onto the boom. 220/570. A small freshwater fish in the carp family (. 3Di Endurance is the most rugged version of our composite molded sail technology. • (n.) A convex curve or arch cut in the edge of a sail to prevent chafing, or to secure a better fit. [4], Mainsails on Bermuda rigs typically have paired grommets that secure the luff and leech to the boom, as the sail is lowered to reduce its area. Roach Roach The outward and rearward curve of the leech of a mainsail, an unnatural shape which is maintained by Battens. Sail components include the features that define a sail's shape and function, plus its constituent parts from which it is manufactured. Roach makes a pretty shape, and gives untaxed area to the racing man whose sail area is calculated on straight corner-to-corner measurements.. Roach Sails are not usually a perfect triangle and include an additional curved area on the leech of a sail, called a roach. In the lower sections of the sail, the roach is a smaller percentage of the cord, so the battens don't have as much work to do. Before we delve into those topics, let’s discuss why we have battens in the first place. These include grommets, which reinforce fabric at an attachment points and connections to lines; hoops and slides, which attach sails to spars; and reefing features, which may include reefing lines attached to the sail or grommets that have reefing lines running through them. Without the battens, no amount of tweaking the mainsheet, outhaul or halyard would prevent it from flopping about creating nothing but drag. While it requires the support of those pesky battens (the batten length must be at least 3 times longer than the roach it is supporting), roach enhances mainsail performance. [34] Gaff-rigged sails require an extra set of lines to secure the part of the leech that becomes the new clew. (UK, slang, smoking) The filter of a rolled cigarette or joint, made from card or paper. MEANINGS. It is common for sailmakers to add an arc of extra material on the leech, outside a line drawn from the head to the clew. Roband A piece of yarn or line used to fasten a sail to a spar. roach 1. There are several key factors in evaluating a fiber for suitability in weaving a sail-cloth:[1][3], Traditionally, sails were made from flax or cotton canvas. Racing sailboats may have full-length battens, as well, that allow for better sail shape. The position of the round or roach is expressed in percentage of the side length starting from the lower or most leftward end of that edge. Get an Offer These spars are called yards and their tips, beyond the last stay, are called the yardarms[5]. These sails are officially called “Large Roach … To my surprise, the mainsail was battenless with no roach, which seems a bad idea to me for a full-keel cruising boat.