John Chandagnac is a fictional character from the novel "Pirate Latitudes," written by Michael Crichton. He is portrayed as a young man with a keen interest in adventure and exploration during the 17th century in the Caribbean. Chandagnac's character embodies the spirit of the age, seeking fortune and excitement in a world filled with danger and opportunity. In the story, John Chandagnac becomes involved with pirates and navigates the complexities of life at sea. His journey reflects themes of ambition, survival, and the moral dilemmas faced by those who live outside the law. The novel captures the essence of piracy and the allure of the high seas.