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Story highlights

A dock to the USS Arizona Memorial in Pearl Harbor, Hawaii, was damaged

World War II memorial will be closed for at least a week, National Park Service says

Japan's surprise attack on Pearl Harbor sank the USS Arizona on December 7, 1941

CNN —  

The USS Arizona Memorial in Pearl Harbor, Hawaii, will be closed to visitors until at least June 4 after a dock to the memorial that sits atop the sunken battleship was damaged in an accident Wednesday, the National Park Service says.

The damage occurred when tugboats were “assisting” the USNS Mercy, an 894-foot-long, 69,000-ton hospital ship, inside the harbor, the U.S. Navy Region Hawaii said in a statement on its Facebook page.

“Initial visual assessments show that the dock was moved about 10 feet toward the Memorial. A small area of concrete was damaged where the dock’s ramp joined the Memorial. The dock’s ramps and railings were also damaged,” the statement said.

“It is not safe for visitors to disembark at the USS Arizona Memorial,” said the National Park Service, which administers the memorial, part of the World War II Valor in the Pacific National Monument.

Military.com, which first reported the accident, said it occurred around 7 a.m. Hawaii time on Wednesday. A photo on the website shows the hospital ship dangerously close to the 184-foot-long memorial.

The Navy said the accident is under investigation.

The USS Arizona was sunk on December 7, 1941, during Japan’s surprise attack on Pearl Harbor that brought the United States into World War II. The remains of many of the 1,177 U.S. military personnel who died aboard the Arizona are still inside the wreck. It was the greatest loss of life ever in an attack on a U.S. warship, the park service says.

The memorial was dedicated in 1962. About 5,000 people visit it every day.

The Mercy, which has its home port in San Diego, is in Hawaii to participate in Pacific Partnership 2015, a humanitarian and disaster relief exercise, according to the Navy.