[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: 46CFR169.307] [Page 47-48] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 169_SAILING SCHOOL VESSELS--Table of Contents Subpart 169.300_Construction and Arrangement Sec. 169.307 Plans for sister vessels. Plans are not required for any vessel which is a sister ship to a vessel, provided that-- (a) The approved plans for the original vessels are already on file at any Marine Inspection Office; (b) The owner of the plans authorizes their use for the new construction; (c) The regulations have not changed since the original plan approval; and [[Page 48]] (d) There are no major modifications to any of the systems used. Hull Structure