This study aims to evaluate the correlation between width cracks - corrosion rate in reinforced concrete specimens exposed to a tropical marine environment of very high aggressiveness. For this specimens from DURACON project with w/c ratio of 0.65 and 0.45 were used; six of them have 6 steel bars placed at three different depths (15 20 and 30 mm) for electrochemical tests and 6 specimens without reinforcement for destructive testing. These specimens were exposed for more than 10 years at the station La Voz Venezuela; monthly the meteorochemical parameters (relative humidity temperature precipitation wind speed and Cl-) and electrochemical parameters (potential and corrosion rate) were evaluated. This paper presents the results obtained for the specimens with a/c = 0.65 which are the only that have cracked demonstrating excellent linear correlation between crack width and corrosion rate depending on the coating thickness on rebar.