| Portsmouth | ||||
| Destinations | Name | Contact | Other services | Schedule |
| Isle of Shoals | Isle of Shoals Steamship Co. | 800.441.4620 | sightseeing, charters | schedule |
| Casco Bay | ||||
| Portland and islands | Casco Bay Lines | 207-774-7871 | sightseeing, charters, music | schedule |
| Portland/Yarmouth NS | Bay Ferries | 888-249-7245 | coming soon: "The Cat" | schedule |
| Cousins/Chebeague Island | Chebeague Island Transportation Co. | 207-846-3700 | schedule | |
| S. Freeport/Bustins Island | Bustins Island Ferry | |||
| Midcoast | ||||
| New Harbor/Monhegan | Hardy Boat Cruises | 800-278-3346 | sightseeing, charters | schedule |
| Port Clyde/Monhegan | Monhegan Boat Lines | 207-372-8848 | schedule | |
| Penobscot Bay | ||||
| Rockland/Matinicus | Maine State Ferry Service | 207-596-2202 | schedule | |
| Rockland/Vinalhaven | Maine State Ferry Service | 207-596-2202 | schedule | |
| Rockland/North Haven | Maine State Ferry Service | 207-596-2202 | schedule | |
| Lincolnville Beach/Islesboro | Maine State Ferry Service | 207-734-6935 | schedule | |
| Mount Desert | ||||
| Stonington/Isle au Haut | Isle au Haut Company | 207-367-5193 | schedule | |
| Bass Harbor/Swans | Maine State Ferry Service | 207-244-3254 | schedule | |
| Bass Harbor/Long Island | Maine State Ferry Service | 207-244-3254 | schedule | |
| SW Hbr/ Cranberry Isles | Cranberry Cove Boating Co. | 207-244-5882 | schedule | |
| NE Hbr/Cranberry Isles | Beal and Bunker | 207-244-3575 | schedule | |
| Bar Harbor/Yarmouth NS | Bay Ferries | 888-249-7245 | "The Cat" | schedule |
| Passamaquoddy Bay | ||||
| Eastport/Campobello NB | East Coast Ferry Service | 506-747-2159 | schedule | |
| Eastport/Deer Isle NB | East Coast Ferry Service | 506-747-2159 | schedule | |
| Deer Isle NB/Back Bay NB | Canadian government | 888-747-7006 | "Letete ferry" free service | schedule |
| Blacks Hbr NB/Grand Manan Is NB | Coastal Transport | 506-662-3724 | schedule | |
| Grand Manan NB/ Whitehead Is NB | Coastal Transport | 506-662-3724 | schedule | |
| Fundy and Saint John | ||||
| Saint John River crossings | Canadian government | 888-747-7006 | free service | schedule |