
Emo Duck |

I'm not sure if I understand the question correctly, but if you're asking whether necrocrafts count for the maximum number of undead HD that a character can control, I would say yes, based on this sentence:
Creating a necrocraft wrote:
As with animate dead, the necrocraft is under the creator's control when created.
Since it references the animate dead spell directly, I would assume that the rules therein apply to necrocrafts the same as more conventional undead.