33 C.F.R. § 401.82 Reporting mast height.
Title 33 - Navigation and Navigable Waters
A vessel, any part of which extends more than 33.5 m above water level, shall not transit any part of the Seaway until precise information concerning the height of the vessel has been furnished to the nearest Seaway station. (68 Stat. 93–96, 33 U.S.C. 981–990, as amended and secs. 4, 5, 6, 7, 8, 12 and 13 of sec. 2 of Pub. L. 95–474, 92 Stat. 1471) [48 FR 20691, May 9, 1983]
Title 33: Navigation and Navigable Waters
PART 401—SEAWAY REGULATIONS AND RULES
Subpart A—Regulations
Information and Reports
§ 401.82 Reporting mast height.