The newspaper reports that the Government is aware of at least a dozen "incidents of disruption or intimidation on cruise liners" since mid November, and cites a Foreign Office minister as calling on militants to “allow cruise ships to travel without threats or hindrance".
The incidents apparently include ships being refused entry to Argentine ports, ransacking of the offices of shipping companies and operators being forced to alter or abandon their itineraries.
More top news
The 53-year-old was killed shortly after leaving her home in Mosta, Prime Minister Joseph Muscat said.
Jordi Sanchez of the Catalan National Assembly and Jordi Cuixart of the Omnium Cultural group were jailed on Monday.
Storm Ophelia continues to bring strong winds to western parts.