In Assassin's Creed Odyssey, Kassandra's ship is named Adrestia.
The Adrestia is a trireme that carries Kassandra across the Aegean Sea during the Peloponnesian War. It functions as both transportation and a combat platform, allowing the player to ram enemy vessels, fire arrows and javelins, and board ships after weakening them.
The ship can be upgraded with improvements to its hull, weapons, crew, and storage. Adrestia is also available when Alexios is selected as the playable character, since the game allows either sibling to lead the story. It should not be confused with the Jackdaw, Edward Kenway's ship in Black Flag, which is a different vessel in a later historical period.