this study will focus specifically on the movement of smoke within corridors. In a shipboard scenario,corridors represent the main, and often the only,route of egress.Unlike shoreside installations,the egress route for a ship is quite often "up".For many ships,and especially Coast Guard cutters,the majority of work spaces and berthing areas are below the main weather decks;the likely point of safety and debarkation from a ship.Also unlike buildings and many larger passenger vessels,cutters are not provided with centralized stair towers that lead to these outside spaces. It is quite conceivable that one would have to traverse more that one passageway(corridor) in it's entirety to gain access to a ladderway(stairway) that leads to a weather deck.Where building codes,as well as regulations for large passenger vessels,address "dead ends" in corridors, this is not an issue that has, historically, been considered when designing Coast Guard cutters.As such,the potential exists for certain passageway configurations to represent a significant threat to life safety,given a specific fire scenario. Where the initial module of the SAFE program,the Flame Movement Module, is primarily aimed at identifying potential "property" losses, a smoke movement module would primarily be used to identify potential life safety problems. It is hoped that the results of this study will assist in the development and inclusion of a smoke movement module to allow designers to compare possible solutions to life safety problems and make design improvements to mitigate any.