MSC Seaside is a Seaside-class cruise ship currently owned and operated by MSC Cruises. As the lead vessel of the Seaside class, she lends her name to the company's Seaside class. At 153,516 GT, she would become the largest cruise ship ever to be constructed by Italian shipbuilder Fincantieri, and the 45th largest cruise ship in the world, behind Norwegian Epic, upon her delivery in December 2017.
On April 27th, 2023 the MSC Seaside scored a 67 out 100 by the Centers for Disease Control and Prevention's Vessel Sanitation Program, citing issues such as poorly cleaned dishware and flies.[3] Prior to this score, the ship averaged a score of 93 across two inspections.[4] In July 2023, the CDC updated the score to 92 after corrective actions were taken.