I know exactly where that is! Fort Lauderdale/Port Everglades in Florida. If you go to marinetraffic.com and click on the aforementioned area, you'll find a cruise ship terminal at the end of Eller Drive. 'Mazon' was berthed at the north end of that area, on the eastern side (technically, in the Intracoastal Waterway.
I was there in early 1984. The Canadian Navy used to head south in mid-winter, to paint our ships prior to participating in NATO's winter exercise. We were berthed to the left of 'Mazon'. At that time, most of her house had been removed. At the stern, one could see the patterns of 'Rio Amazonas' and 'Buenaventura'. Most of the name was painted-over, leaving 'Mazon', and the POR was Panama.
I'm quite sure about the dates - I joined the (not 'Royal', in those dark days)Canadian Navy in Feb 1983, and that port visit was the first stop on my first deployment.
I might have a few photos to post, if I can track down my old photo album.

Tom

Thank you Peter, for the information, it looks like she is at the location where it was cut down to the barge, Florida, maybee ?

IMO 5074381
Built Canada 1953 as ciudad de Cali
Renamed rio amazonas 1972 then Mazon in 1980
Converted to a barge and sunk off fort lauderdale 1982