Simplify the following text for a Grade 8 native English-speaking person.
Original: She resumed her westward journey on 26 December , rounded the Cape of Good Hope on 13 March 1771 , and reached the English port of Dover on 12 July , having been at sea for nearly three years .
Simplified: She left on 26 December , rounded the Cape of Good Hope on 13 March 1771 , and reached the English port of Dover on 12 July , having been at sea for nearly three years .