I was just thinking about where I saw it, then I remembered it in the File Library under routes. I recall thinking that the Atlantic Bay Terminal was a good place to see close in buildings and such, if that was what you were thinking.
Screenshot_Atlantic Bay Terminal_43.64790--70.28127_20-04-51.jpg
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Good old Portland Terminal (which is now of course Maine Maritime and lives right here in the file library) comes to mind. It has a nice collection of harbor themed assets, including some truly lovely ships (most if not all of them courtesy of Captain Bazza if I remember correctly), some docks, sea walls, pilings, etc.