The Fenton docks were one of the "below the bridges" docks into which the tall masted schooners had to berth. Difficult to know if this is a photo or a painting ? Most of these docks have now been filled in and commercial property built on them.
The message reads:-
Dear Emily
I pen you these few lines to let you know I am well hoping you are quite the same remember me to mother and sister lilly and also ??? brother charley. From your l c a
At the top of the card is added (upside down) "Hope you are a good girl"