Gyn

A gyn is a form of three legged lifting device used on sailing ships. It provides more stability than a derrick or sheers, and requires no rigging for support. However, it can only be used for lifting things directly up and down. Gyns may also be used to support either end of a ropeway.

Two legs, called cheeks, are bound together as in the sheerlegs. The third spar is called the prypole and is fixed under the cheeks. Only four pulleys are required; three as splay tackles and the fourth one as lifting purchase. A timber hitch of six figure-of-eight turns and a finishing clove hitch lash the crutch but not too tight because the cheeks need some room to spread their heels. The cheeks of the gyn are now ready to spread and to be erected, the cheek splay tackle is hauled tight and then the other adjacent splay tackles can be lashed. At the sides, the gyn is unstable and it is crucial that the cargo is not swung out of the base triangle; consequently the gyn is only for lifting cargo vertically.

Santa Genoveva Airport

Santa Genoveva/Goiânia Airport (IATA: GYN, ICAO: SBGO) is the airport serving Goiânia, Brazil.

It is operated by Infraero.

History

The airport was inaugurated in 1955 although operations started a few years earlier. Since 1974 it is operated by Infraero.

The present passenger terminal is capable of handling 600,000 passengers/year but in the last few years it has been operating beyond its capacity: in 2010 it handled almost 4 times its capacity.

The government of the state of Goiás, in order to encourage tourism and aviation reduced the tax on petrol from 15% to 3%. After such a reduction there was some interest from airlines to build a hub at Santa Genoveva airport but its present operational limitations prevented the immediate implementation of such a plan.

Airlines and destinations

Accidents and incidents

Accidents