Guide: http://www.gamerguides.com/assassins-creed-iv-black-flag/
iPad App: https://itunes.apple.com/us/app/gamer-guides/id599410871

This legendary ship, like the others, has a massive broadside attack, but its most devastating ability is the invisible mortar shots that it fires. The mortars will not appear on the water as the typical yellow/red silhouettes that we are used to, instead you need to watch where the mortars are going to avoid them. This ship will fire the mortars from left to right. There is a spot in the middle where you can avoid the fire but it requires immense precision.

Its backside is the most vulnerable part of the ship. Both hulls are impenetrable by ramming and cannon fire so always try to circle behind it. It is not as maneuverable as El Impoluto so you should be able to get around it. Unleash chain shots and mortars once you're there.

As long as you can maintain your position at the back of the ship, you will have no trouble taking it down.