[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: 46CFR45.137] [Page 84] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 45_GREAT LAKES LOAD LINES--Table of Contents Subpart D_Conditions of Assignment Sec. 45.137 Cargo ports. (a) Unless otherwise authorized by the Commandant, the lower edge of any opening for cargo, personnel, machinery access, or similar opening in the side of a ship must be above a line that is drawn parallel to the freeboard deck at side and has as its lowest point the upper edge of the uppermost loadline. (b) The number of cargo ports in the sides of a ship must be-- (1) No more than the minimum necessary for working the ship; and (2) Approved by the Commandant.