Without being able to see the mastheads it would be impossible to determine whether it's a ketch
It just looks like a ketch
with the mizzen staysail rigging
in place. The angle of the staysail rigging
looks very much like a ketck, but the angle of the photo
makes it hard to tell for sure.
I've taken pictures of my ketch and the angle makes her look like a schooner, especially when the mizzen staysail stay is in place.
I wouldn't bet either way though..