What is the name of the main ship in Assassin's Creed Rogue?

The Morrigan is the main ship in Assassin's Creed Rogue.

Shay Cormac commands the Morrigan as he travels through the North Atlantic, the River Valley, and New York during the Seven Years' War. Unlike the Jackdaw, which is a large sailing ship in Black Flag, the Morrigan is a smaller sloop designed for colder waters and river navigation.

Rogue was released in 2014 and presents the series' conflict from the viewpoint of a former Assassin who joins the Templars. Its naval mechanics build on Black Flag but add hazards such as icy waters and the ability to break through ice. The Aquila belongs to Assassin's Creed III, and the Gabbiano is another vessel associated with the franchise, so those names are not the answer for Shay's ship.