Eight people who were aboard a Norwegian Cruise Line ship on a trip to Africa have been stranded for nearly a week after the ship left without them. Six American citizens are among those who were left behind, but the company is denying any liability for the issues and also for the inability of those who are stranded to make their way back onboard, the New York Post reported. According to the NBC affiliate WMBF-TV, a Norwegian cruise ship made a stop in the African island country of São Tomé and Príncipe on March 27. A number of passengers exited the ship in order to explore the country on priv…