This section includes the description of how to unlock the Ramming Speed trophy in Assassin's Creed: Odyssey. This trophy is unlocked for ramming any ship in half. It is not difficult, however, requires you to take specific actions.
This trophy can be unlocked even when completing the first naval tutorials soon after you take command over Adestria.
Attack any ship and weaken it enough for it to have a minimal amount of Energy.
Do not continue your attack on the enemy ship and do not board it. Instead, direct Adestria at the side of the weakened ship. Right before you reach it, hold the Ramming button. It should be cut in half and your trophy unlocked.