A coxed four, abbreviated as a 4+, is a

racing shell In watercraft, a racing shell (also referred to as a ''fine boat'' (UK) or simply a ''shell'') is an extremely narrow, and often comparatively long, rowing boat specifically designed for Rowing (sport), racing or exercise. It is equipped with lon ...

used in the sport of competitive rowing. It is designed for four persons who propel the boat with sweep oars and is steered by a

coxswain The coxswain ( or ) is the person in charge of a boat, particularly its navigation and steering. The etymology of the word gives a literal meaning of "boat servant" since it comes from ''cock'', referring to the wiktionary:cockboat, cockboat, a ...

. The crew consists of four rowers, each having one oar, and a cox. There are two rowers on the stroke side (rower's right hand side) and two on the bow side (rower's lefthand side). The cox steers the boat using a

rudder A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, airship, or other vehicle that moves through a fluid medium (usually air or water). On an airplane, the rudder is used primarily to counter adverse yaw ...

and may be seated at the stern of the boat where there is a view of the crew or in the bow (known as a bowloader). With a bowloader, amplification is needed to communicate with the crew which is sitting behind, but the cox has a better view of the course and the

weight distribution Weight distribution is the apportioning of weight within a vehicle, especially cars, airplanes, and trains. Typically, it is written in the form ''x''/''y'', where ''x'' is the percentage of weight in the front, and ''y'' is the percentage in t ...

may help the boat go faster. When there is no cox, the boat is referred to as a "

coxless four A coxless four, abbreviated as a 4- and also called a straight four, is a racing shell used in the sport of competitive rowing. It is designed for four persons who propel the boat with sweep oars, without a coxswain. The crew consists of four ...

". Racing boats (often called "shells") are long, narrow, and broadly semi-circular in cross-section in order to reduce drag to a minimum. Originally made from

wood Wood is a structural tissue/material found as xylem in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulosic fibers that are strong in tension and embedded in a matrix of lignin t ...

, shells are now almost always made from a

composite material A composite or composite material (also composition material) is a material which is produced from two or more constituent materials. These constituent materials have notably dissimilar chemical or physical properties and are merged to create a ...

(usually

carbon-fibre reinforced plastic Carbon fiber-reinforced polymers (American English), carbon-fibre-reinforced polymers ( Commonwealth English), carbon-fiber-reinforced plastics, carbon-fiber reinforced-thermoplastic (CFRP, CRP, CFRTP), also known as carbon fiber, carbon comp ...

) for strength and weight advantages. Fours have a fin towards the rear, to help prevent roll and yaw and to help the rudder. The riggers are staggered alternately along the boat so that the forces apply asymmetrically to each side of the boat. If the boat is sculled by rowers each with two oars the combination is referred to as a

quad scull A quadruple sculling boat, often simply called a quad and abbreviated as a 4x, is a racing shell used in the sport of competitive rowing. It is designed for four people who propel the boat by sculling with two oars, or "sculls", one in each h ...

. In a quad scull the riggers apply forces symmetrically. A sweep oared boat has to be stiffer to handle the unmatched forces, and so requires more bracing, which means it has to be heavier than an equivalent sculling boat. However most rowing clubs cannot afford to have a dedicated large hull with four seats which might be rarely used and instead generally opt for versatility in their fleet by using stronger shells which can be rigged for either as fours or quads. "Coxed four" is one of the classes recognized by the

International Rowing Federation World Rowing, also known as the World Rowing Federation (officially FISA; ), is the international governing body for rowing. Its current president is Jean-Christophe Rolland who succeeded Denis Oswald at a ceremony held in Lucerne in July 2 ...

. It was one of the original events in the

Olympics The modern Olympic Games (Olympics; ) are the world's preeminent international sporting events. They feature summer and winter sports competitions in which thousands of athletes from around the world participate in a variety of competit ...

but was dropped in 1992.FISA World Rowing - Olympic Games
The world fastest time in the coxed four has been set by the crew from Germany in the final of the World Championships in Vienna, Austria in 1991. The crew of Matthias Ungemach, Armin Weyrauch, Armin Eichholz, Bahne Rabe and coxswain Jörg Dedering finished in a time of 5:58.96 min.

References

{{fineboats Rowing racing boats

See also

References