The use of performance analysis within swimming and diving began in the 1990’s and has developed along with advances in video technology since then. By breaking a race down into its constituent parts, specific objective data of the technical components of a race can be analysed. This data is critical to the coach and athlete as it can be used to enhance training and competitive performance. In swimming, each race is broken down into its constituent parts i.e. swim speed, stroke length, stroke rate, starts, turn, finish times. This data can then be used to create a measure of current performance against which any improvement can be benchmarked. This also allows the coach to clearly identify areas within the race where improvements can be made e.g. turns are too slow. These areas can then be targeted during the next training cycle into the next benchmark meet.