CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER L—OFFSHORE SUPPLY VESSELS (parts 125 to 135) > PART 128—MARINE ENGINEERING: EQUIPMENT AND SYSTEMS > SUBPART C—Main and Auxiliary Machinery (§128.310 to §128.320) > 128.320—Exhaust systems.