CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER S—SUBDIVISION AND STABILITY (parts 170 to 174) > PART 174—SPECIAL RULES PERTAINING TO SPECIFIC VESSEL TYPES > SUBPART G—Special Rules Pertaining to Offshore Supply Vessels (§174.180 to §174.225) > 174.195—Bulkheads in machinery spaces.

174.195—Bulkheads in machinery spaces.

(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.