The paper presents a contribution to the deduction of the distribution function of cloud condensation nuclei in a maritime atmosphere depended on supersaturation. The calculation is based on the Nukyiama-Tanassava distribution function and on the data deduced from the measurement of giant chloride nuclei concentration with a cascade impactor on the seashore. The supersaturation distribution function found was a decreasing function unlike the same relationship calculated using Junge's distribution law.