§ 84.17 § 84.17 Intensity of non-electric lights. Non-electric lights shall so far as practicable comply with the minimum intensities, as specified in the Table 84.14(b).
33 CFR §84.17
33 CFR Part 84
TL;DR
Non-electric lights shall so far as practicable comply with the minimum intensities, as specified in the Table 84.14(b).