In case you’re traveling in the Pacific Northwest, I made a ferry map you may find useful. It shows routes for the two major ferry systems: the BC Ferry (blue routes), the Washington State Ferry (green routes), as well as the Victoria Clipper (red routes) and Coho (black route) ferries. All ferries accept cars and motorcycles, except for the Victoria Clipper, a high-speed ferry, which carries passenger only.
Note: the BC Ferry travels throughout British Columbia. I’m only showing their Gulf Island routes on this map. Also, if there’s anything on this map that I missed, please let me know.
Correction: A previous version of this map showed a Victoria Clipper route from Friday Harbor to Victoria. The route does not exist.