This question seems to be incomplete. However, there is enough information to find the right answer.
Answer: Yes
Explanation:
Although Armstrong W. Sperry had been born in New Haven, Connecticut, he soon became interested in the sea stories by Herman Melville, Robert Louis Stevenson, and Jack London. Furthermore, he was introduced to the South Seas by his great-grandfather, Captain Sereno Armstrong, who told him about his past adventures when he was a mariner in that region. Eventually, Sperry decided to quit his job and sail off to the South Seas, His adventures during that time of exploration would become the foundation for his future stories set in the south seas. So he did have the authority to write an adventure story about the south Sea because he had seen that area himself.
