The Algeciras – Tanger Med ferry is a very popular crossing to get to Morocco from Spain. You will be on the boat for about 1.5 hours; this can be an exciting option if you want to travel from somewhere in Europe by car, for example.
The Alaska Marine Highway operates a ferry service between Whittier and Valdez in the USA, with sailings available up to 3 times per week. The distance covered by the ferry is 130 kilometers or 81 miles, and the journey takes about 6 hours.
The stopover ferry from Split to Dubrovnik (4 hours) is an alternative to driving there by car (3,5 hours) of flying. The ferry is however only operational in the summer season. Stops in Hvar, Korcula, Mljet and Bol.