Frogmen search the waters of the River Foyle. Our notes indicate that they are looking for the ship, ‘Mountjoy’. The Mountjoy figured heavily in the 1689 Siege of Derry and was the small ship that broke through the boom erected by the army of King James to liberate the city.

We don’t have any records on whether anything was recovered in this search. There has been archaeological work done since to establish the exact location of the boom.