[Code of Federal Regulations] [Title 46, Volume 7] [Revised as of October 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR174.325] [Page 180] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 174--SPECIAL RULES PERTAINING TO SPECIFIC VESSEL TYPES--Table of Contents Subpart I--Hopper Dredges With Working Freeboard Assignments Sec. 174.325 Equalization. When doing the calculations required by Sec. 174.310 of this subpart-- (a) Equalization arrangements requiring mechanical aids, such as valves, may not be assumed to be effective in reducing the angle of heel; and (b) Spaces joined by ducts may be assumed to be common spaces only if equalization takes place within 15 minutes after flooding begins. [[Page 181]]