A Union Jack is displayed at the castle. The Union Jack wasn't in use before 1606, while the Robin Hood legend is set in the times of the 3rd Crusade (1187-1192).
The pirate boat lands on a sand beach, with a sign reading Conten di Sherwood (sic), while Sherwood Forest has no sea border, and never was a county. Sherwood was part of the county of Nottinghamshire.