Pearl Harbor is not just a piece of history and a popular tourist attraction. It is also an active military base. If you had visited Pearl Harbor prior to September 11, 2001, it’s possible that you may have found a boat willing to take you on a tour to Pearl Harbor and float past the USS Arizona wreckage. Since 9/11, the heightened security at military bases means that commercial vessels are not permitted to enter. Even when they were permitted in the harbor, commercial vessels have never been permitted to stop at the memorial. The only way to see the USS Arizona memorial is through the National Park program that offers a navy boat shuttle.