Killing somebody in a any ship that is neither a speciality of BCH-class+ ship does not count for any VCs.
Ships classfied as "specialty" is determined by the Server Admin. There's a max limit of how many speciality and/or BCH-class+ ships are on at one time. Losing a speciality and/or BCH-class+ ship disallows the player from flying these type ships for the successive 12 hours.