The Treasure of the "San Philipo"

"The Treasure of the 'San Philipo'" by Percy F. Westerman is an adventure story about a sixteen-year-old named Reginald Trevena, who joins his father and uncle on a hunt for treasure hidden in a sunken Spanish ship. The story is set in the past and full of family history, sailing, and the dream of finding lost riches. Reginald's uncle finds clues about a treasure that could help the Trevena family, whose wealth is dwindling. Their ancestor, Captain Humphrey Trevena, captured the "San Philipo," which later sank. Reginald and his family work to solve the mystery of Humphrey’s past and where the treasure might be, facing dramatic shipwrecks and rivals who also want the treasure. A secret code appears, offering to show the way to the treasure, launching them into a dangerous journey full of excitement.