Section 67.50-45 - Thirteenth Coast Guard District(a)Description. See § 3.65-1 of this chapter.(b)Line of demarcation. There is no line of demarcation prescribed for this District. When required, it will be determined in accordance with § 67.01-20 .CGFR 58-17, 23 FR 3377, May 20, 1958, as amended by CGFR 62-25, 27 FR 8733, Aug. 31, 1962