Pirate Diary is a historical children's book, presented in the engaging format of a diary. The book follows the fictional experiences of a young boy or cabin boy who is forced or voluntarily joins a pirate ship in the 17th or 18th century. The diary entries, complemented by detailed illustrations, bring the brutal realities and daily life aboard a pirate vessel to life. The book is an educational tool that uses a fun narrative structure to teach historical facts about piracy.