[Code of Federal Regulations] [Title 46, Volume 4] [Revised as of October 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR108.423] [Page 134] TITLE 46_SHIPPING (This book contains parts 90 to 139) CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 108_DESIGN AND EQUIPMENT--Table of Contents Subpart D_Fire Extinguishing Systems Sec. 108.423 Fire hydrants and associated equipment. (a) A fire main system must have enough fire hydrants so that each accessible space may be sprayed with at least two spray patterns of water. (b) In a main machinery space, except a shaft alley with no assigned space for stowage of combustibles, each spray pattern of water must be from one length of fire hose and each must be from a separate outlet. In all other spaces at least one spray pattern of water must be from one length of fire hose. (c) No outlet on a fire hydrant may point above the horizontal. (d) Each fire hydrant must have at least one spanner and at least one fire hose rack or reel.