In the last years of World War I, the Allied sea-power had been weakened by German submarines. The U.S. military used wooden ships, many of which were built and anchored in Widewater, Virginia, but the war ended before they could be used. Most ships were moved across the Potomac river to a secluded bay called Mallows Bay that served as a junkyard. Some were deconstructed but most of the ships sank. In 1970 a representative from the Audubon Society testified that the wrecks had become an "integral part of the ecosystem." In the 1990s the area was found to contain longboats from the Revolutionary era and modern ships. In 2002, Mallows Bay was protected for the state of Maryland, and in November 2015 the site was nominated as a National Marine Sanctuary.