Dosimetric control: report of French submarine forces from 1989 to 1999.We report on the Ile Longue strategic site and describe the medical and dosimetric monitoring of nuclear submarine crews. Over the past eleven years, dosimetric results of nuclear submarine crews have been gathered. We have compared these results to those of workers employed by outside enterprises and the directorate of naval constructions. During this period, neither the crew members nor the workers have been over-exposed. Considering each group, we show a more or less distinct diminution of equivalent doses.