33 C.F.R. § 84.21 Intensity of non-electric lights.
Title 33 - Navigation and Navigable Waters
Non-electric lights shall so far as practicable comply with the minimum intensities, as specified in the Table given in §84.15.
Title 33: Navigation and Navigable Waters
PART 84—ANNEX I: POSITIONING AND TECHNICAL DETAILS OF LIGHTS AND SHAPES
§ 84.21 Intensity of non-electric lights.