CFR > Title 33 - Navigation and Navigable Waters > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER O—POLLUTION (parts 151 to 159) > PART 156—OIL AND HAZARDOUS MATERIAL TRANSFER OPERATIONS > SUBPART A—Oil and Hazardous Material Transfer Operations (§156.100 to §156.170) > 156.105—Definitions.