Message in a bottle.

[TyGeR_STD 37]

Message in a bottle gives treasure maps which are fun, but are always on land. There should be treasure maps for the water.  Same concept.  you find a bottle near shore and it has a note inside.  "Our ship was attacked and sunk by X number Ship of the Damn in the north area of J10!"  so you sail to J10,  see the red marker somewhere in open water on the north end of the zone and when you get close one (or more depending on the map level) unique colored ships of the damn will spawn.  Once these ships are destroyed you can dive down to find a ship wreck and recover a treasure chest.  The map quality will give a clue as to the level ships that will spawn. Also with the upcomming SotD changes the ships that spawn can be different sizes and levels.  lower level/quality maps should be one or two very low level SotD,  a higher level/quality map would be 3, 4, 5, or more high level SotD that will take several company members with several ships to deal with.