Casco Bay Lines transports cars and light pickup trucks to Great Diamond, Long Island, Chebeague Island, and Cliff Island aboard the Maquoit II. This is not a regularly scheduled service; reservations are required and are taken on a first-come, first-served basis. Due to the limitations of schedule, tide, and weather, reservations should be made as far in advance as possible, and transportation on the requested date and time cannot be guaranteed. Charges are one-way; same day round-trip service is not available for any vehicle.

All vehicles departing down the bay from Portland must be at the terminal at least 90 minutes prior to departure — any exceptions must be discussed in advance. Vehicles departing from island piers must be on the pier 1/2 hour in advance of the published departure time.

Peak Rates: April 15, 2023 – October 9, 2023
Off-Peak Rates: October 11, 2022 – April 14, 2023

Downbay Rates Off-Peak Season Peak Season
Non-Commercial Vehicles (One Way)
Car/station wagon/pickup/van $88.65 $122.65
Trailers up to 20 feet $52.65 $78.65
Trailers over 20 feet $88.65 $122.65

Downbay Vehicle Restrictions

  • There is a 5500 pound maximum weight limit (including cargo). This prohibits most commercial trucks and heavily loaded pickup trucks or vans.
  • No vehicle exceeding 6 feet 6 inches in height may be transported.
  • No bicycles, kayaks, ladders, or other equipment may be carried on the roof of the vehicle. Bicycles may be carried on rear racks but may need to be removed for space reasons.

Downbay Vehicle Reservations

Please e-mail moc.s1701214754enily1701214754abocs1701214754ac@sr1701214754acyab1701214754nwod1701214754 or use the convenient form below to inquire about getting a vehicle Downbay.

  • MM slash DD slash YYYY
  • MM slash DD slash YYYY
  • This field is for validation purposes and should be left unchanged.