HMS Halcyon (1813) was a Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

  that Edward Larking & William Spong built at King's Lynn

King's Lynn

King's Lynn is a sea port and market town in the ceremonial county of Norfolk in the East of England. It is situated north of London and west of Norwich. The population of the town is 42,800....

and launched in 1813. She had one of the shortest lives of any vessel of her class. She was commissioned on 13 July under Commander John Houlton Marshall for the West Indies. During her short period of active duty Halcyon escorted convoys and cruised. Less than a year after her commissioning she was wrecked.

On her last cruise she left Britain on 6 April 1814. Because of the number of sick men aboard Halcyon, Marshall decided to sail to Annotto Bay, Jamaica, to get fresh provisions. On 19 May 1814, while reentering the bay to retrieve her boat, Halcyon hit a reef off Free Point. Despite efforts to free her, by the early hours of the next morning she had filled with water and capsized to port. All her crew were saved by boats that were by then standing by.

The reef was marked on the charts but was found ex post to extend much farther than had been charted. Apparently, unknown to anyone but the locals, the reef extended four miles from the shore as a result of an earthquake in 1812.