46 C.F.R. § 174.195 Bulkheads in machinery spaces.
Title 46 - Shipping
(a) The bulkhead in each machinery space of each OSV must be watertight to the bulkhead deck. (b) Each penetration of, and each opening in, a bulkhead in a machinery space must— (1) Be kept as high and as far inboard as practicable; and (2) Except as provided by §174.210 of this subpart and by paragraph (c) of this section, have means to make it watertight. (c) No penetration of a bulkhead in a machinery space by a ventilation duct need have means to make the bulkhead watertight if— (1) Every part of the duct is at least 760 millimeter (30 inches) from the side of the OSV; and (2) The duct is continuously watertight from the penetration to the main deck. (d) Each penetration of a bulkhead in a machinery space by piping must meet the design requirements for material and pressure in subchapter F of this chapter.
Title 46: Shipping
PART 174—SPECIAL RULES PERTAINING TO SPECIFIC VESSEL TYPES
Subpart G—Special Rules Pertaining to Offshore Supply Vessels
§ 174.195 Bulkheads in machinery spaces.
