Just to add to what Falcon wrote. The first mention is in Chapter 3 when Chantry meets up with the group of castaways. The next mention is in Chapter 5 when Chantry finds the stranded galleon and retrieves three chests filled with treasure. In Chapter 6, Chantry sees the ship has floated free and tells the reader that it has begun to drift being pushed inland by the wind and tide. Then, as Falcon says, in Chapter 29, Chantry and Turley overhear the pirates talking and one tells the pirate captain, who I think is Leckenbie, that the ship is "hard aground" which is probably where Sackett discovers it years later.

Justintime