46 C.F.R. § 179.212 Watertight bulkheads for subdivision.
Title 46 - Shipping
(a) A vessel of not more than 19.8 meters (65 feet) in length must comply with §179.220 of this part if it: (1) Carries more than 49 passengers; or (2) Is constructed of wood on or after March 11, 2001, and operates in cold water. As an alternative, the above vessels may comply with the intact stability requirements of §§170.170, 170.173, 171.050 and 171.055 of this chapter, and comply with the Type II subdivision requirements of §§171.070 through 171.073 in subchapter S of this chapter. (b) A vessel of more than 19.8 meters (65 feet) in length must comply with the Type II subdivision requirements of §§171.070 through 171.073 in subchapter S of this chapter. (c) A vessel that carries more than 12 passengers on an international voyage must meet the Type II subdivision requirements of §§171.070 through 171.073 in subchapter S of this chapter.
Title 46: Shipping
PART 179—SUBDIVISION, DAMAGE STABILITY, AND WATERTIGHT INTEGRITY
Subpart B—Subdivision and Damage Stability Requirements
§ 179.212 Watertight bulkheads for subdivision.