Below are some tips for exploring the shipwrecks underwater:ġ.) You can always backtrack after exiting out an entire shipwreck.
Completely exploring all shipwrecks is needed for a level-3 Abstergo Explorer challenge. These contain several treasure chests, including a design plan that can be used for unlocking elite level upgrades for your ship. Seven shipwrecks are spread throughout the game, they are marked by sunken ships above the waters, which are very visible from the horizon.
