The Alaska Marine Highway System (AMHS) is a ferry service operating along the south-central coast of Alaska, the eastern Aleutian Islands and the Inside Passage of Alaska and British Columbia, Canada. Animals may be transported on AMHS vessels, but are restricted to the car deck. They must be properly contained in an approved carrier or be transported in a vehicle and accompanied by an adult passenger. U.S. Coast Guard regulations restrict passenger access to the car deck while the vessel is underway. On extended sailings such as between Bellingham and Ketchikan, Juneau and Whittier, and in route to Sitka, 15-minute pet calls will be made approximately every 8 hours to allow pet owners to be escorted to the car deck. Owners are responsible for attending and cleaning up after pets. Pet calls are made at the discretion of the Captain and may occur throughout the day or night. Owners may also attend to pets any time the vessel is stopped in port.