The higher level ships (Juggernaut, Death Omen, and Behemoth) are believed by some to be as I like to call , "drifter ships" (for example, you know how the Corvette flagship doesn't sail in a circle, but goes from Cutthroat all the way to Outcast and just sits there? Thats what i mean by a "drifter ship"). This is not proven though, due to the fact they are seen sailing in circles. I believe that they are drifter ships, due to the fact whenever you go to a place where somebody told you they found it, even when they have proof such as a picture, its not there!
On another fact, i guess i will have to agree with the others that the most likely you are to find the ships are:
Death Omen: Northwest of Peridida, Southeast of Kingshead, very far soth of Outcast and Cuba, and RARELY off to the east of Isla De la Avaricia.
Behemoth: Northwest of Peridida, East of Cuba, far south of Cuba Isla Tormenta and Outcast.
Juggernaut: Northwest of Peridida, FAR east of Kingshead, southwest of Padres, far south of Tormenta Cuba and sometimes Outcast.
(my answers are basically the same stuff you always hear)
- Captain Del