Harborside loading work area 3×4
This fits directly next to a harbor building, since it is 3 squares deep.
These almost all rely on Shroomblaze’s amazing shipping series of props. He’s also made some buildings with them, too, so check it out. His full collections is found in one place here:
Sadly, these lovely cargo props disappear at a far range, but unfortunately it seems that is something only the designers of the props, or the game itself, can fix. They still look nice, so they’re well worth having until that fix is added to an update. Your version of the props in these parks will also be automatically updated once the creators figure out how to fix it.