GW2 Ship of Sorrows achievement guide with detailed walkthrough. Ship of Sorrows is a new achievement introduced with the Halloween patch for a location in Straits of Devastation.
This achievement is pretty hard to get if you are doing it solo. There is a sunken ship underwater NW of Royal Forum Waypoint and it is filled with risens. The chest and the Ship of Sorrows achievement is inside the ship (bottom deck) and it can be a bit confusing to navigate.