Core Ship Design requirements for TOA
Does anybody know the specifics for obtaining specific core ship designs in Twilight of the Arnor? Considering that there are new and different technology trees in TOA, I would expect different requirements for obtaining ship designs like the Sledge Hammer, Avatar, and Star Dragon. Also I am asking this because I only seem to obtain ship designs that include the Battle Axe, the Phoenix, and the Dreadnought. Does the tech requirements for each ship also differ for each species?