181.500—Required number, type, and location.
        
        (a) 
         Each portable fire extinguisher on a vessel must be of an approved type. The minimum number of portable fire extinguishers required on a vessel must be acceptable to the cognizant OCMI, but must be not less than the minimum number required by Table 181.500(a) and other provisions of this section.
    
    | Space protected | Minimum No. required | Type extinguisher permitted | ||
|---|---|---|---|---|
| CG class | Medium | Min size | ||
| Operating Station | 1 | B-I, C-I | Halon | 1.1 kg (2.5 lb). | 
| CO2 | 1.8kg (4 lb). | |||
| Dry Chemical | 0.9 kg (2 lb). | |||
| Machinery Space | 1 | B-II, C-II located just outside exit | CO2 | 6.8 kg (15 lb). | 
| Dry chemical | 4.5 kg (10 lb). | |||
| Open Vehicle Deck | 1 for every 10 vehicles | B-II | Foam | 9.5 L (2.5 gal). | 
| Halon | 4.5 kg (10 lb). | |||
| CO2 | 6.8 kg (15 lb). | |||
| Dry Chemical | 4.5 kg (10 lb). | |||
| Accomodation Space | 1 for each 232.3 square meters (2,500 square feet) or fraction thereof | A-II | Foam Dry Chemical | 9.5 L (2.5 gal). 4.5 kg (10 lb). | 
| Galley, Pantry, Concession Stand | 1 | A-II, B-II | Foam | 9.5 L (2.5 gal). | 
| Dry Chemical | 4.5 kg (10 lb). | |||
        
        (b) 
         A vehicle deck without a fixed sprinkler system and exposed to weather must have one B-II portable fire extinguisher for every five vehicles, located near an entrance to the space.
    
    
        
        (c) 
         The cognizant OCMI may permit the use of a larger portable fire extinguisher, or a semiportable fire extinguisher, in lieu of those required by this section.
    
    
        
        (d) 
         The frame or support of each B-V fire extinguisher permitted by paragraph (c) of this section must be welded or otherwise permanently attached to a bulkhead or deck.
    
    [CGD 85-080, 61 FR 982, Jan. 10, 1996; 61 FR 24464, May 15, 1996, as amended at 62 FR 51358, Sept. 30, 1997]