All dives shall be designated by a system of 3 or 4 numerals followed by a single letter. In the Front, Back, Reverse and Inward groups, a 1 in the second digit indicates that the dive has a flying action during the dive. When there is no flying action the second digit shall be 0. The third digit shall indicate the number of half somersaults being performed. In the Twisting and Armstand groups the fourth digit shall indicate the number of half twists being performed.
Free position means any combination of the other positions and is restricted to twisting dives.
As a guide, a list of previously calculated dives with their numbers and degrees of difficulties are listed in Appendix 2. Any dive, which is not on the list but is entered into a competition, shall be allocated the dive number and the degree of difficulty that is determined by the Referee in accordance with Rules D 1.5 and 1.6. In calculating the degree of difficulty for twisting dives with more than 1 somersaults when position B or C is clearly defined, except during the twist, for at least one complete somersault during the dive, that position shall be used in the calculation. A somersault twisting dive with 1 or 1 somersaults shall be calculated in the free position. All Rights reserved.