original_query: What evidence suggests that Crowhurst's reported sailing performance was falsified during his voyage?
query: What evidence suggests that Crowhurst's reported sailing performance was falsified during his voyage in the Sunday Times Golden Globe Race?
answer: Crowhurst's claim of a remarkably fast day's run of 242 nautical miles on December 8th was met with skepticism by Francis Chichester.  Furthermore, starting December 6th, Crowhurst maintained two logs—one accurate and one fabricated—with increasingly impressive progress reported in the false log despite his remaining in the Atlantic.