It is not immediately obvious to me as to how you remove the covers on the deck navigation lights..Advice would be appreciated .
			
			
			
				Can you show us which lights those are with a photo or specify the make and model?
			
			
			
				On some models there is a button on the base which enables the cover to slide off.
			
			
			
				If its the nav light port/Stbd on the pulpit if I mind right there is a small screw underneath 
Mike
			
			
			
				Many thanks.I didn't notice a button or a screw.I will look again next time I am at the boat and if unsuccessful, will post a photograph. 
			
			
			
				If they are the white plastic lights, there is a button on the bottom to depress while simultaneously rotating the bottom edge towards you.  They don't come apart easily, but once you get the knack, it's not too bad.  I was always afraid of breaking one.  So far none have broken.
Jake