[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: 46CFR171.060] [Page 124] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 171--SPECIAL RULES PERTAINING TO VESSELS CARRYING PASSENGERS--Table of Contents Subpart C--Large Vessels Sec. 171.060 Watertight subdivision: General. (a) Each of the following vessels must be shown by design calculations to comply with the requirements in Secs. 171.065 through 171.068 for Type I subdivision or Sec. 171.075 for Type III subdivision: (1) Each vessel 100 gross tons or more on an international voyage: and (2) Each vessel 150 gross tons or more in ocean service. (b) Each vessel not described in paragraph (a) of this section must be shown by design calculations to comply with the requirements in Secs. 171.070 to 171.073 for Type II subdivision. (c) Except as allowed in Sec. 171.070(c), each vessel must have a collision bulkhead. (d) Each double-ended ferry that is required by paragraph (c) of this section to have a collision bulkhead must also have a second collision bulkhead. One collision bulkhead must be located in each end of the vessel.