46 CFR § 173.056
Collision and other watertight bulkheads
April 15, 2021
(a) Collision bulkheads required by this section must comply with the requirements in §171.085 of this subchapter.
(b) Each sailing school vessel required to meet paragraph (a) of §173.054 must comply with the machinery space bulkhead requirements in §171.095 of this subchapter.
[CGD 83-005, 51 FR 924, Jan. 9, 1986]