177.210—Plans for sister vessels.
        
        (1) 
         Approved plans for the original vessel are on file at the Marine Safety Center or in the files of the cognizant OCMI;
    
    
    
        
        (3) 
         The regulations used for the original plan approval have not changed since the original approval; and
    
    
    
        
        (b) 
         If approved plans for the original vessel are not on file at the MSC or with the cognizant OCMI, the vessel owner shall submit plans as described in  § 177.202 of this part.