covering approximately . The seaway and lock were shut down to help contain the spill. International trade and tourism The seaway is important for American and Canadian international trade. It handles 40–50 million annual tonnes of cargo. About 50% of this cargo carried travels to and from international ports in Europe, the Middle East, and Africa. The rest comprises coastal trade, or short sea shipping, between various American and Canadian ports. Among international shippers are found: Polsteam, which maintains a fleet of dry-bulk only vessels that transit every two weeks from the Dutch town of IJmuiden to Duluth, Minnesota Fednav Group, a private international dry-bulk only ocean transportation group, with routes between the Port of Antwerp and Sorel, Quebec, even in wintertime World Shipping Inc., a privately owned global logistics operation Canfornav, a subsidiary of Canfor, which does dry bulk only and registers most of its vessels in Cyprus American Steamship Company, a subsidiary of the General American Transportation Corporation (GATX) Rand Logistics, which was formed from the acquisition of Lower Lakes Towing Ltd, and does not ship containers McKeil Marine, headquartered in Hamilton, which provides service to Arctic ports Groupe Desgagnés, The Port of Montreal is the site of operations of Maersk Line, a unit of the A.P. Moller-Maersk Group Mediterranean Shipping Company Compagnie Maritime d'Affrètement / Compagnie Generale Maritime, a French transshipper Hapag-Lloyd acquired the Port of Montreal docks of, along with the rest of, CP Ships in 2005 Orient Overseas Container Line, a Hong Kong-based multinational Arrimage Quebec, which has stevedoring operations in Baie-Comeau, Becancour, Chicago, Cote-Sainte-Catherine, Gaspe, Gros-Cacouna, Hamilton, Matane, Oshawa, Pointe-au-Pic, Port Colborne, Portneuf, Quebec, Rimouski, Saguenay, Sept-Iles, Sorel-Tracy, St. Catharines, and other ports in the Maritime provinces of Canada. The St. Lawrence Seaway (along with ports in Quebec) is the main route for Ontario grain exports to overseas markets. Its fees are publicly known, and were limited in 2013 to an increase of 3%. A trained pilot is required for any foreign trade vessel. A set of rules and regulations are available to help transit. Commercial vessel transit information is hosted on the U.S. St. Lawrence Seaway Development Corporation website. Since 1997, international cruise liners have been known to transit the seaway. The Hapag-Lloyd Christopher Columbus carried 400 passengers to Duluth, Minnesota, that year. Since then, the number of annual seaway cruising passengers has increased to 14,000. Every year, more than 2,000 recreational boats,