129.360—Semiconductor-rectifier systems.
        
        (a) 
         Each semiconductor-rectifier system must have an adequate heat-removal system to prevent overheating.
    
    
        
        (b) 
         If a semiconductor-rectifier system is used in a propulsion system or in another vital system, it must—
    
    
    
    
        
        (3) 
         Comply with  Sections 4/5.84.2 and 4/5.84.4 of the “Rules for Building and Classing Steel Vessels” of the American Bureau of Shipping.