"Incapacitate Vargas' ship" is a mission objective in Right-Hand Man
Walkthrough[edit]
Go up to Travel Speed quickly. Use the spyglass to mark your target of Vargas' ship. Once you are within 500 meters, start using the Mortar to damage his ship. Close the distance, weaken the ship and board it. If you are close to begin with, immediately start firing the Forward guns.
Previous Objective[edit]
Reach the wheel of the Jackdaw