In the first shot the main points of interest are the colored boats, of which you have cropped one, there is empty space to left of shot with little interest, one or two steps to your right you could have included all three boats? unless that meant you falling in the harbor.
The second one is the best IMHO but a wider shot to include the netting bottom right would help.
The last is OK I like the colors of the buildings against the grey sea.
For one I would have been in the sea!!!
I get what you are saying re 2, but was wary to include to much additional foreground as well.
Ta for commenting.