Loonitick
Supercharged
The white powdery stuff you have there (will likely be basically a powder under the lacquer) is aluminium oxide. Get aluminium and oxygen together, with a bit of salty moisture and it oxidizes like a pig. Only thing to do with it really is to strip back the lacquer, polish it down and immediately re-lacquer it. May work, but the ****ed stuff almost always comes back.
	
		
			
		
		
	
				
			 
					
					
				 
			
			 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
	 
 
		 
 
		