33 C.F.R. Subpart 67.30—Class “C” Requirements
Title 33 - Navigation and Navigable Waters
Class “C” structures shall be the structures erected in an area where Class “C” requirements must be met. (a) The obstruction lights shall be white or red lights as prescribed in Subpart 67.05 of this part and shall be of sufficient candlepower as to be visible at a distance of at least one nautical mile 90 percent of the nights of the year. The lights shall be displayed at such height, above mean high water, as shall be prescribed by the District Commander. When the District Commander shall authorize red lights to mark a Class “C” structure, the color thereof shall conform to the shade of red prescribed in Military Specification Mil-C-25050 (ASG), Type 1, Grade D. A copy of the specification may be obtained from the Commanding Officer, Document Automation and Production Service, 700 Robbins Avenue, Building 4, Section D, Philadelphia, PA 19111–5091. (b) When Class “C” structures are erected in close proximity to each other, or are connected in such a manner as to prevent marine traffic from passing freely through the field, obstruction lights may be authorized to mark the perimeter structures only, when in the judgment of the District Commander the group of structures which are equipped with obstruction lights are so arranged that the particular structures are protected to the degree required by this part, and are not a hazard to navigation. (c) Unless advised to the contrary by the District Commander, obstruction lights shall be required on Class “C” structures erected in depths of water greater than 3 feet at mean low water. (d) In cases where, although not required, an applicant desires to establish and operate obstruction lights, a permit therefor shall be granted, at the discretion of the District Commander: Provided, That the lights meet the requirements set forth in this part. [CGFR 58–34, 23 FR 7701, Oct. 4, 1958, as amended by CGFR 68–95, 33 FR 15285, Oct. 15, 1968; USCG–2001–10714, 69 FR 24983, 24984, May 5, 2004] (a) The owner of a Class “C” structure shall install a sound signal if: (1) The structure is erected on or adjacent to the edge of a: (i) Navigable channel; (ii) Fairways; or (iii) Line of demarcation; and (2) The District Commander decides it is necessary for the safety of marine commerce. (b) Sound signals required by paragraph (a) of this section must have rated range of at least one-half mile, unless the District Commander prescribes a greater rated range, not to exceed 2 miles. (c) The owner of the structure shall operate the sound signal required by paragraph (a) of this section whenever the visibility in any direction is less than 3 miles, unless the District Commander establishes a greater or lesser distance of visibility, not to exceed 5 miles. (d) Class “C” structures may have sound signals if: (1) Authorized by the District Commander under the provisions of Subpart 66.01 of this subchapter; and (2) The sound signal meets the requirements of §67.10–1 (a) and (b). [CGD 72–74R, 37 FR 13513, July 8, 1972]
Title 33: Navigation and Navigable Waters
PART 67—AIDS TO NAVIGATION ON ARTIFICIAL ISLANDS AND FIXED STRUCTURES
Subpart 67.30—Class “C” Requirements
§ 67.30-1 Class “C” structures.
§ 67.30-5 Obstruction lights.
§ 67.30-10 Sound signals.
