This was for DL 1.4ish if memory serves, and it was later rolled into either DL or DA.  One way or another, you should have access to all the ship parts it adds (which IIRC is it, really).

Bit of an adendum to synergy09's query. I too have the Ultimate edition and have downloaded Croc's ships (both the fighter pack and the capship one) My problem is that all but the battleships show up. Is there a reason for this? Eg, missing content. If so how do I resolve this problem. I do have Kryo's hull mods in the game (in I presume the correct folders as the options show during ship creation). Any help would be greatly appreciated.