Marinas feature a few times in the GTA 6 promotional content. Here we list them. For the Vice City marina specifically, see the Vice City marina piece.

Vice City marinas

At least one marina next to downtown, visible in Trailer 2. Possibly a second on the barrier island coast. Yachts - leisure-based, not industrial.

Keys marinas

Smaller marinas visible on the islands. Dive bars. Small craft. All consistent with a real-Keys vocabulary.

Other coastal moorings

Working boats anchored at quiet coastal areas. Probably related to fishing as opposed to recreation.