[Code of Federal Regulations] [Title 46, Volume 7] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR174.015] [Page 169-170] 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 B_Special Rules Pertaining to Deck Cargo Barges Sec. 174.015 Intact stability. (a) Except as provided in Sec. 174.020, in each condition of loading and operation, each barge must be shown by design calculations to have an area under the righting arm curve up to the angle of maximum righting arm, the downflooding angle, or 40 degrees, whichever angle is smallest, equal to or greater than-- [[Page 170]] (1) 15 foot-degrees (4.57 meter-degrees) for ocean and Great Lakes winter service; and (2) 10 foot-degrees (3.05 meter-degrees) for lakes, bays, sounds, and Great Lakes summer service. (b) For the purpose of this section, downflooding angle means the static angle from the intersection of the vessel's centerline and waterline in calm water to the first opening that does not close watertight automatically.