In a boat, the racing shell (also called only a smooth boat (UK) or just shell ) is very narrow, and often rowboats are relatively long and specially designed for racing or sports. It comes with a long, outrigger paddle to hold oarlocks away from the boat, and a sliding seat. The length of the cross section and the semi-circular cross section reduces the drag to a minimum. This makes the boat fast and unstable. This should be offset by the oarsmen to avoid tipping. Being able to balance - or "arrange" - the boat while trying to the maximum to the oars is an important skill of the rowing sport.
Video Racing shell
History
Shell racing evolved from a simple work paddle boat. Longer hull boats and narrower rays were developed in the early 19th century especially for team racing. These dedicated boats are the first boats to be called racing shells, and they have evolved into very special forms used today.
Riggers
The narrower boat provides a sharper angle to the bow and smaller cross-sectional areas reduces drag and drag waves, and avoids the hull speed limitations at race speed. The first racing shells, while narrower than the working oars, are limited by the width required to install oarlocks on the sides of the ship ("gunwales"). By attaching the outrigger to the gunwales, oarlocks can be placed further. This results in two things: the oars become longer, provide longer for the blow, and the stomach becomes narrower to as narrow as possible while maintaining adequate buoyancy and balance.
Materials
Originally made of lapstrake wood, shells are now almost always made of composite materials for strength and overweight. The first composite framework was made from a papier-mÃÆ' Â ¢ chÃÆ'Â © and became popular in the 1870s. These paper shells are sold worldwide by Waters Paper Boat Factory of Troy, New York. The next evolution of oar shells is mainly made of thin plywood flanking the honeycomb structure of cardboard with the outer hull of fiberglass. Modern shells are usually made of carbon fiber reinforced plastic in a honeycomb structure. They are produced by the cold accumulation of carbon, which is then left to be regulated, or by using heat preservation, which ensures that the carbon fiber composites are set up properly. The best shells are characterized by their "rigidity", because lack of flexibility means no force given by the oarsmen who are wasted in twisting the ship.
Shear
A rower in a seat remained limited in the amount of power he could apply to the oars by the force at the top of his body and the distance he could draw the oars on each blow. Once the riggers are added to the shell allowing the use of the paddles again, the oarsmen take advantage by taking longer strokes and using their feet during a stroke. Initially, athletes wear long trousers with oil-resistant wear-resistant footwear and the shell has a concave, elongated chair. The athletes can then use their feet to slide along the seats, adding strength to their feet and letting them greatly extend the stroke. This eventually leads to a modern sliding seat, which is mounted on a roller, which allows the movement of a rower body almost without friction. The first sliding seat was developed by George Warren of Toronto, a famous shipbuilder and bait maker, who was then coach of world rowing champion Ned Hanlan. With the emergence of a sliding seat, Ned was able to outperform his English-speaking colleagues.
Sliding rigger
The same advantage can be obtained by fixing the seat and installing the outrigger on the roller. Now the athlete's body mass remains silent and the boat does not throw almost as hard. This increases the speed of the boat significantly. The disadvantage is that this arrangement can lead to blisters on one's ass and at the risk of slipping off one's seat when exerting too much explosive force at the start of the race. In April 1877, Michael Davis of Portland Maine applied for a patent for a sliding rigger/foot-board with a fixed seat. In 1981, Germany's Peter-Michael Kolbe won the FISA World Championship using a glide tool. In August 1983 FISA banned the use of sliding-riggers, probably because it was considered more expensive than a sliding boat boat.
Maps Racing shell
Ship classification
There are a large number of types of boats. They are classified using:
- Number of Rowers . In all forms of modern competition, the number of rowers can be 1, 2, 4, or 8. Although they are very rare, boats for some other rowers do exist (such as 24 people StÃÆ'¤mpfli Express). In the 19th century, there were often races with 6, 10, and 12 rowers per boat.
- Coxswain's position . Boats can be coxless, bow-coxed (also called bowloaders), or stern-coxed. In the coxless ("straight") vessel, a Steersman is responsible for steering well using a mechanism that connects one of his shoes with a wire to the steering wheel-turn steering wheel, or by using a hand-controlled rope, called a rope, gunwal or boat, and controlling the rudder in the same way. Singles and doubles do not use the wheel in competition; rower directs by increasing or decreasing the pressure or length on one scull or the other. In competition, bow-and-stern vessels can compete with each other.
Although rowing and sweeping boats are generally identical to each other (except having different riggers), they are called using a different name:
- Sweep: straight pair (2-), coxed pair (2), four straight (4-), coxed four (4), eight (8) (always in-cox)
- Sculling: single (1x), double (2x), straight quad (4x), quad coxed (4x), octuple (8x) (very rare in world class, and always in-cox)
See also
- Rowing (sport)
- Single Scull
- Sculling
Category: Rowing Equipment Manufacturers
Note
References
- The history of the paper ship, including the paper racing shell
http://www.duckworksmagazine.com/04/s/excerpts/maib/17/index.htm, For information on development and production process of paper boat
- The History of the MIT Crew: Chapter 8, which includes the evolution of the paddle shell
Source of the article : Wikipedia
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