I am still puzzled by a 1653 Brak

Ron van Maanen, as I have mentioned, lists a yacht Brak, of the Admiralty of Amsterdam, with a date of 1653 that has somewhat different dimensions than the yacht that we know. The captain, on 1 April 1653, was Dirck Pietersse Berthiens. The dimensions that Ron gives are 115ft x 25ft x 9ft x 6ft. The armament is familiar: 4-8pdr, 12-4pdr, and 2-3pdr guns. The crew was anywhere from 70 to 90 men. The usual dimensions for the Brak are 115ft x 23ft x 10-1/2ft x 6ft. Ron also lists a set of dimensions for a Brak on 31 March 1665 of 116ft x 24ft.