Pretty much what Loken said, but just to add a link and a short explanation:
You have to download the latest version of DSAccountManager, make a character ingame, then edit the character in DSAM changing the shiptype to dsy_venator and giving it the assorted powercore and engine.
Also if you want to make that ship public without having to manually give it to every character, you can copy the character files for the Venator you've made and put it in your restarts folder, naming it Venator or sth, so people can simply type /restart venator and get the ship.