Again, the same pic posted from the j-15/breaking news/threads...
here, I'd like to add a couple of things:
1: we do not know when this picture was taken.
2: We do not know whether it is the first catapult test, or second, or 100th
3: we do not know which J-15A/T/B prototype it is, i.e.: we don't know if there's only one J-15A/T/B or multiple.
4: it looks like the plane in the photo as it was taken, was only being guided into position, and the green helmet in the white jacket is giving the thumbs up to indicate a positive "lock". In other words, the aircraft is not immediately in the process of being launched in this moment which the photo takes, which is also obvious given the jet blast deflector isn't up.
View attachment 40203
regarding 4: it's possible the jet blast deflector is just out of sight, as we can see what appears to be an edge of it on the right side of the photo
is this the steam cat?
I don't think anyone knows which one is the steam cat or em cat confidently.
However, keep in mind they have almost certainly done many launches from both the em cat and the steam cat as part of the competition. This photo would be of just one launch of many.