33 CFR § 401.82
Reporting mast height
August 2, 2023
§ 401.82 Reporting mast height.
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.
[48 FR 20691, May 9, 1983]