CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER F—MARINE ENGINEERING (parts 50 to 64) > PART 50—GENERAL PROVISIONS > SUBPART 50.10—Definition of Terms Used in This Subchapter (§50.10-1 to §50.10-35) > 50.10-20—Headquarters.