Which Assassin's Creed game introduced the naval ship Adrestia?

Assassin's Creed Odyssey introduced the naval ship Adrestia.

The Adrestia is the player-controlled warship used by Kassandra or Alexios in Assassin's Creed Odyssey. The game is set in ancient Greece during the Peloponnesian War, and the ship lets the protagonist travel among the Aegean islands, engage enemy vessels, and reach coastal locations.

Players can upgrade the Adrestia's hull, weapons, and crew. Naval combat includes ramming, volleys of arrows and javelins, and boarding or salvaging after a ship is defeated. Lieutenants recruited during the adventure also provide bonuses to the vessel.

The ship is sometimes confused with Black Flag's Jackdaw, which belongs to Edward Kenway, or Origins' river and sea vessels, which are used in a different ancient setting. Odyssey's maritime system is especially prominent because the Aegean Sea forms a major part of its open world.