Tim, in the un-cropped original Bevington photograph the Norwich City is in the background. Now, we know the length of the Norwich City but, that was when it was seaworthy. If you look at it in the Bevington photograph it has begun to fall apart so, the length is questionable and therefore not much use for scaling. If we could get some accurate info for funnel and masts sizes it would be better, they look to be in good nick in the photo, then the number crunching could begin. Apart from that there isn't much else to go on regarding scale in the Bevington photograph. IMHO of course.