The Internationals quickly spread. Bermuda took delivery of seven in January 1937. The next year fleets were established in Marblehead, Massachusetts and Northeast Harbor, Maine, followed by fleets in Norway and Cowes. During the war, legend says that Aas buried the construction jigs to protect them during the Nazi occupation. After the liberation of Norway, construction resumed at Fredrikstad with boats going to San Francisco, Sweden, France, Oyster Bay, and Cowes. Fiberglass construction was introduced in the 1960s with great care taken by the class to ensure that the wood and glass yachts could race on an equal basis. Today, there are twelve fleets racing around the world— Bermuda, Norway (two fleets - (Fredrikstad and Tønsberg), the United Kingdom (St. Mawes, Falmouth), Sweden (Stenungsund), Canada (Chester, Nova Scotia), New York (three fleets -- Larchmont, Manhattan, and Fishers Island), Maine (Northeast Harbor), Massachusetts (two fleets -- Marblehead and Nantucket) and California (San Francisco Bay).