 After the ' panic party ' had taken to the boats and the ship appeared to be sinking , the U @-@ boat approached to within 80 yards of her port quarter , whereupon Sanders ordered the White Ensign hoisted and the Prize opened fire . Within a few minutes the submarine was on fire and her bows rose in the air , whilst the Prize was further damaged . The U @-@ boat disappeared from sight , and was believed to have been sunk by the crew of the Prize and by several of the German crew ( including her captain ) who had been blown or jumped into the sea . However , neither of the crippled ships had sunk , with the Prize being towed in flames back to Kinsale . The U @-@ 93 struggled back to the Sylt nine days later . 
