 Her oft worn @-@ out and poor condition contributed to her being wrecked when in June 1809 she grounded on an uncharted shoal in the mouth of the River Plate , whilst seeking shelter with the rest of her squadron from a storm . All hands and most of the ship 's stores were saved , but the condition of the ship 's timbers made it impossible to free the ship ; her captain was cleared of responsibility for the ship 's loss thanks to documents detailing her defects . Recently , the wreck of Agamemnon has been located , and several artefacts have been recovered , including one of her cannons . 
