I’ve just finished Longitude by Dava Sobell. Great story with some amazing characters like Admiral Sir Cloudisely Shovell
Admiral of the Fleet Sir Cloudisely Shovell died along with 2000 sailors in the mass shipwreck of 1707 in the Scilly Isles. 7 years later Parliament passed the Longitude Act offering £20,000 to anyone who could develop a method for ships to accurately calculate their longitude.
Sobell says one sailor on Shovell’s flagship, who was a native of the Isles, spoke up to warn him they were off course. Shovell had him hanged for insubordination. Shortly after the ship HMS Association foundered on rocks, and three other ships followed; Eagle, Romney and Firebrand.
Shovell’s body washed ashore in Porthellick Cove. Sobell says 30 years later a woman confessed on her deathbed that she had found him on the beach alive, and finished him off so she could take his emerald ring.