Real Miami is a city of canals. The intracoastal, the residential canals, the drawbridges that interrupt traffic when a yacht passes. Trailer 2 reproduces that vocabulary deliberately.
We cover the canal frames here. For the broader water systems, see the water systems page.
What the canal frames show
Narrow waterways flanked by residential buildings. Small docks at the back of houses. Bridges over the canals at street intervals. Boats moored along the canal walls. Some sequences include moving boats - small craft, not yachts.
Visual coding: residential, lived-in, not the marina-coded leisure water. The canals are part of the city's interior, not its waterfront.
What the canals enable
Boat traversal inside the city, plausibly. The real Miami canal system isn't a serious commuting route but the surface area for small-boat movement is real. GTA 6 might use this for chase sequences, smuggling missions, or just for atmosphere.
The other thing the canals enable is residential variety - houses-with-docks are a different kind of property to houses-with-driveways, and Vice City probably has both.