if you're referring to the youtube video talking about the ketch, it was hardly a chart (it used warped images that distorted the shape and size of the vehicles) and the numbers used where widely inaccurate. There was a point in the video where he stated the cabal carrier was around 300 meters and the cruiser was 400 meters. Yet in that exact same video he showed a shot of the crashed carrier in the background completely dwarfing the cruiser in the foreground. So yeah, I wouldn't call it a chart