[Code of Federal Regulations] [Title 46, Volume 2] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR44.310] [Page 71] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 44_SPECIAL SERVICE LIMITED DOMESTIC VOYAGES--Table of Contents Subpart C_Rules for Assigning Working Freeboards to Hopper Dredges Sec. 44.310 Definitions. Hopper dredge means a self-propelled dredge with an open hold or hopper in the hull of the dredge that receives dredged material. Working freeboard means one-half the distance between the mark of the load line assigned under this subchapter and the freeboard deck.