[Chronology of scheduling repeated dives and its importance in professional diving]

Repeated dives are frequently performed in diving practice. The value of proper chronology of sequencing repeated dives into different depths was verified by analyzing three professional tabular decompression systems. Sequencing of dives from greater to smaller depths proved to be the only correct algorithm. Such an algorithm plays an important role in preventing the development of critical supersaturation with inert gas and of potential manifestations of decompression sickness in divers.