the remaining leg vertically into a knight position. Lower the remaining leg and scull above your head into a back layout position. Knight: The body is in a surface arch position, where the legs are flat on the surface, and the body is arched so that the head is vertically in line with the hips. One leg is lifted, creating a vertical line perpendicular to the surface. Side Fishtail: Side fishtail is a position which one leg remains vertical, while the other is extended out to the side parallel to the water, creating a side "Y" position. Split Position: With the body vertical, one leg is stretched forward along the surface and the other extended back along the surface, in an upside down split position. Tower: Start in a front layout position. Scull downwards into a pike position. Lift one leg vertically into a crane position. Lift the other leg into a vertical position and descend into the water. Tub: Both legs are pulled up to the chest with the shins and tops of the feet dry and parallel on the surface of the water. Vertical: Achieved by holding the body completely straight upside down and perpendicular to the surface usually with both legs entirely out of water. The International Olympic Committee has further described the technical positions. Routine Routines are composed of "figures" (leg movements), arm sections and highlights. Swimmers are synchronised both to each other and to the music. During a routine swimmers can never use the bottom of the pool for support, but rather depend on sculling motions with the arms, and eggbeater kick to keep afloat. After the performance, the swimmers are judged and scored on their performance based on execution, artistic impression, and difficulty. Execution of technical skill, difficulty, patterns, choreography, and synchronization are all critical to achieving a high score. Technical vs. free routines Depending on the competition level, swimmers will perform a "technical" routine with predetermined elements that must be performed in a specific order. The technical routine acts as a replacement for the figure event. In addition to the technical routine, the swimmers will perform a longer "free" routine, which has no requirements and is a chance for the swimmers to get creative and innovative with their choreography. Length The type of routine and competition level determines the length of routines. Routines typically last two to four minutes, the shortest being the