 Before the battery could start firing on the 30th, the French surrendered both forts.The French surrendered 26 heavy guns, two 13" mortars, and a blockhouse with a garrison of three hundred men and officers, all of whom became prisoners of war.From late December 1813 Farquhar's squadron, comprising "Desiree", "Hearty", "Blazer", "Piercer", "Shamrock", "Redbreast", and eight gun-boats (the seven from Cuxhaven plus No.