The increase in the cost of fuel derived from petroleum has had an adverse impact on the tariffs of tickets for the ferry boat between Mayaguez, Puerto Rico, and Santo Domingo. According to Listin Diario, ferry operator Ferries del Caribe announced its sea tickets between the two cities would increase by US$10 as from 1 September 2005. Maribel Mas, Vice President of the ferry operator had stated to Puerto Rican newspaper “El Nuevo Dia” that the round trip on the “Millennium Express”, which currently costs US$169, would be more expensive because of the increase of nearly 45% in the cost of fuel over the last year. The ferry boat leaves the port of Mayaguez on Mondays, Wednesdays, and Fridays. It leaves Santo Domingo on Tuesdays, Thursdays, and Sundays.