149.409—How many fire extinguishers are needed?
         Each particular location must have the number of fire extinguishers required by table 149.409.
    
    | Space | Classification | Minimum quantity and location | 
|---|---|---|
| (a) Safety Areas: | ||
| (1) Communicating corridors | A-II | One in each main corridor or stairway not more than 150 feet apart. | 
| (2) Radio room | C-II | One outside or near each radio room exit. | 
| (b) Accommodation Spaces: | ||
| (1) Sleeping quarters | A-II | One in each sleeping space that fits more than four persons. | 
| (c) Service Spaces: | ||
| (1) Galleys | B-II or CII | One for each 2,500 square feet or fraction thereof, for hazards involved. | 
| (2) Storerooms | A-II | One for each 2,500 square feet or fraction thereof, located near each exit, either inside or outside the space. | 
| 
                                
                                    Code of Federal Regulations
                                
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| (3) Paint room | B-II | One outside each paint room exit. | 
| (d) Machinery Spaces: | ||
| (1) Gas-fired boilers | B-II OR C-II | Two. | 
| (2) Gas-fired boilers | B-V | One. 1 | 
| (3) Oil-fired boilers | B-II | Two. | 
| (4) Oil-fired boilers | B-V | Two. 1 | 
| (5) Internal combustion or gas turbine engines | B-II | One for each engine. 2 | 
| (6) Open electric motors and generators | C-II | One for each of two motors or generators. 3 | 
| (e) Helicopter Areas: | ||
| (1) Helicopter landing decks | B-V | One at each access route. | 
| (2) Helicopter fueling facility | B-V | One at each fuel transfer facility.4 | 
| 1 Not required if a fixed system is installed. | ||
| 2 If the engine is installed on a weather deck or is open to the atmosphere at all times, one B-II may be used for every three engines. | ||
| 3 Small electrical appliances, such as fans, are exempt. | ||
| 4 Not required if a fixed foam system is installed in accordance with 46 CFR 108.489 . | ||