46 C.F.R. § 173.061 Watertight integrity above the margin line.
Title 46 - Shipping
The watertight integrity of each sailing school vessel above the margin line must comply with the requirements in subpart G of part 171 of this subchapter or §179.360 in subchapter T of this chapter. [CGD 83–005, 51 FR 925, Jan. 9, 1986, as amended by CGD 85–080, 61 FR 946, Jan. 10, 1996; 61 FR 20556, May 7, 1996]
Title 46: Shipping
PART 173—SPECIAL RULES PERTAINING TO VESSEL USE
Subpart C—School Ships
§ 173.061 Watertight integrity above the margin line.

