I'm not sure about this one, it seems nicely composed and exposed but it lacks any real impact. The black and white finish gives it a bit of a bleak outlook but the calm see and fluffy clouds don't really suit it. I think it would have worked better as a normal colour exposure.
I like that shot, the small boat give diimensions to the rocks Perfect exposure and (IMO) a good BW conversion. At most you can add a little amount of contrast...
I like it's simple. But there are a couple of white spots on the right hand side that are bit off putting.