The felucca has remained, over the centuries, the primary transportation of the Nile. Its ancient form still graces the river as it has done since the time of the Pharaohs. Motorized barges transport bulk material and modern cruise ships transport tourists, but the felucca remains despite modern alternatives. The felucca rarely has any form of engine and relies entirely on the breeze which builds during the day and usually subsides at night. Some of the craft today are used to carry tourists who wish to enjoy an eternally peaceful journey carried along by the gentle breeze and the currents of the river. Few are now made entirely of wood, but the basic layout has barely changed. They don't have a keel as such, but a heavy centre plate which can be raised in the shallows. The sails are seriously low tech affairs made of native cotton and other natural fibers.