MSC Meraviglia is a cruise ship owned and operated by MSC Cruises, built at its Chantiers de l'Atlantique shipyard in St. Nazaire, France, by STX France. Meraviglia is the lead ship of MSC's new "Vista Project" vessels, with the MSC Bellissima planned to follow in 2019, each of which will have a passenger capacity of 4,500. When it debuted in June 2017, it was the 4th largest cruise ship in the world,
SD Northern River is a large multi-purpose auxiliary ship operated by Serco Marine Services in support of the United Kingdom's Naval Service and is currently the largest ship operated by Serco Marine Services, both in terms of dimensions and gross tonnage.
Her duties involve target towing during naval training exercises, noise ranging and data gathering, as well as serving as a submarine escort.