CFR > Title 33 - Navigation and Navigable Waters > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER H—MARITIME SECURITY (parts 101 to 107) > PART 104—MARITIME SECURITY: VESSELS > SUBPART A—General (§104.100 to §104.150) > 104.145—Maritime Security (MARSEC) Directive.