46 C.F.R. § 182.540 Ballast systems.
Title 46 - Shipping
(a) Ballast piping must not be installed in any compartment integral with the hull of a wooden vessel. Where the carriage of liquid ballast in such a vessel is necessary, suitable ballast tanks, structurally independent of the hull, must be provided. (b) Solid and water ballast must comply with the requirements of part 178 of this subchapter.
Title 46: Shipping
PART 182—MACHINERY INSTALLATION
Subpart E—Bilge and Ballast Systems
§ 182.540 Ballast systems.