122.508—Wearing of life jackets.
        
        (a) 
         The master of a vessel shall require passengers to don life jackets when possible hazardous conditions exist, including, but not limited to:
    
    
    
    
    
        
        (4) 
         When the vessel is being towed, except a non-self-propelled vessel under normal operating conditions.
    
    
        
        (b) 
         The master or crew shall assist passengers in obtaining a life jacket and donning it, as necessary.