For dumping oiled waste into the seas and lying to cover it up, Princess Cruise Lines was fined $40 million in 2016. According to federal authorities, it was the "largest-ever criminal penalty" for intentional vessel pollution. Officials said that these practices began in 2005 and persisted until August 2013, when a newly hired engineer blew the whistle. As part of its plea agreement, ships of the parent company Carnival Cruise lines were subjected to a court supervised environmental compliance plan for five years.