Three more cruise lines have been hit with lawsuits under an obscure, 23-year-old US law designed to turn the screws on Cuba, with a fourth suit being allowed to move forward.

The Havana Docks Corp is accusing Royal Caribbean, MSC Cruises and Norwegian Cruise Lines of trafficking in illegally seized property by sailing to the island country and using docks the 102-year-old, brass plate company claims it rightfully owns.