Why do the US Fleet come in Yokosuka?

Those American ships are in trouble going back. They have been found floating around Japan, and those crew don't remember where they came from and how they can come home. So the Japanese Government opened Yokosuka Missing Navy Ship Re-Education Center in 1976, educating and training them to learn how to go home. Civil volunteers outside the center, usually having big red flags, are shouting at those ships and the crew, helping them to understand this is not their home. The center has successfully made ships and crews returning home so far, and over 300 Navy command ships and boats successfully returned to San Diego. However, even big ships like carriers are still arriving to the center against our effort. The Japanese government thinks it would be almost impossible to decrease the number of lost ships.