We are spending a day from a cruise---any interesting sights or shopping we should see?

have you read the tourist web site for the city?
https://www.ferrol.gal/Cidade
or maybe the website for tourism for Galicia.
Ciudad de Ferrol - GALICIA
See what interests you. That information you have not given unfortunately.

You keep asking about what's interesting and what shopping there is in places all over Europe. Do you not have any time to research any of these places yourself? Or at least time to tell us what might interest you or what kinds of shopping you're interested in? If you're going to be on a cruise, presumably you'll have time to pen a sentence or two to explain yourself. Especially as you call yourself wordsmith.

Why did you pick this cruise if you know nothing about the ports? You might find some info at cruisecritic.com if you can't be bothered to buy/borrow some guidebooks.

There is a 3-1/2 hour tour offered for Jewish Travelers in A Coruña you might be interested in judging by your profile.*La Coruna

It A Coruña not La.
It is also the city with the most Graffitied streets in Galicia. According to the Galician newspaper.

https://www.lavozdegalicia.es/notici...07H22C2991.htm

My, what arrogance! I use Fodors as a useful tool along with guidebooks----I have also booked myself private tours in most f the cities I will be seeing except for these few. Lighten up..........

Thanks! I will check it out

See my response below-----

Always taking, never giving back isn't exactly a worthy attribute.

I'll tell you what's arrogant - assuming people are mind readers because you can't be bothered to write a few words other than "what's interesting? shopping?"

I have traveled the world and most areas have specialties they are known for due to terrain, climate, etc. It is a question asked by many---Every town has places or things that are noticed by people----not a problem. Have a nice day