[Code of Federal Regulations] [Title 33, Volume 3] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 33CFR401.45] [Page 673] TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER IV--SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION PART 401_SEAWAY REGULATIONS AND RULES--Table of Contents Subpart A_Regulations Sec. 401.45 Emergency procedure. When the speed of a vessel entering a lock chamber has to be checked in an emergency, a signal consisting of five blasts on a horn shall be given by the master and all mooring lines shall be put out as quickly as possible. [61 FR 19551, May 2, 1996]