Where are the most powerful ships in assassin creed rouge?

In Assassin's Creed Rogue, the most powerful ships are found in the North Atlantic and the River Valley regions. Notably, players can encounter legendary ships like the "Elk" and the "Rogue," which pose significant challenges due to their advanced capabilities and strong defenses. Players must employ strategic tactics and upgrades to defeat these formidable adversaries and reap the rewards. Upgrading the Jackdaw is also crucial for taking on these powerful foes successfully.