45.127—Position of structures, openings, and fittings.
         For the purposes of this part—
    
    
    
    
        
        (2) 
         A superstructure deck or a trunk deck and forward of a point  1/4L from the forward perpendicular; or
    
    
    
    
    
        
        (2) 
         On a superstructure and trunk combination, that is H
            s or more n height, aft or a point  1/4L abaft the forward perpendicular.