"Several helicopters and ships passed by, but none of them noticed me," he was quoted by another defense agency spokesman as saying.

“数架直升机与船只经过，但他们都没有注意到我，”防卫省另一名发言人引述他的话指出。

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Also, there is no US government agency that regulates cruise ships, like the Federal Aviation Administration and the Department of Transportation which regulate air and land travel.

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"There was no information that indicated where troops were or ships were, " he told the Associated Press news agency.

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Safety standards for cruise ships are set by the International Maritime Organization, a United Nations agency, with enforcement falling to individual countries.

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