Continuity mistake: Nearing the final battle, the crew is ordered to weigh anchor. The shots switch back and forth from the anchor being raised, to overhead shots of the windlass. The rope is actually being played out (lowered) on the windlass, while the anchor is supposedly being hoisted.
Continuity mistake: During the carriage chase along the harbour front, Geena Davis crashes through the window of a overhead room, fights her way through it and lands back on the carriage. Did the horses, who were galloping at full tilt slow down for her?