The switching of data for the Black Bull and Black Spread Eagle

Frank Fox has long believed that a copies, a long time ago, switched the dimensions for the two captured Dutch ships Black Bull and Black Spread Eagle. He had advised Dr. Weber of this, back in the 1980's. The Black Bull (Edam or Wapen van Edam) had well-known Dutch dimensions of 120ft x 28ft x 11ft. Frank Fox's first book, Great Ships, still had the error. The English dimensions for the Black Bull were given as 103ft x 30ft x 13ft-6in with a burden of 493 tons. The dimensions given for the Black Spread Eagle were 86ft x 28ft-4in x 12ft and a burden of 367 tons. This is nonsensical, as the Black Spread Eagle was a much larger ship than the Black Bull. The Black Spread Eagle was the Friesland ship Groningen. Her dimensions in Amsterdam feet were132ft x 31ft x 14-1/2ft. Dr. Weber corrected the error in his book De Vierdaagse Zeeslag 11-14 Juni 1666. I had asked Frank Fox about this in 2001, and he told me that yes, the earlier figures were in error, and that Dr. Weber's book was correct, as he had incorporated Frank's thoughs on the subject.