 In May 1915 , she sailed for the Dardanelles , carrying two Short Type 184 torpedo bombers , and arrived at Lesbos on 10 June . Her aircraft were mainly involved in spotting for ships providing naval gunfire support for troops ashore , although they also conducted reconnaissance missions of the area . On 11 August , one of these missions had spotted a Turkish ship off the north coast of the Sea of Marmora and , on the following day , Flight Commander Charles Edmonds attacked it flying a Short 184 seaplane . He left his observer behind and flew with a reduced fuel load to lighten his aircraft enough to carry a 14 @-@ inch ( 356 mm ) , 810 @-@ pound ( 370 kg ) torpedo . He successfully dropped his aerial torpedo at a distance of about 800 yards ( 730 m ) and an altitude of 15 feet ( 4 @.@ 6 m ) . It turned out that his target had been beached after having been torpedoed by the British submarine E14 . This was followed by a successful attack on 17 August against a 5 @,@ 000 @-@ long @-@ ton ( 5 @,@ 100 t ) ship by Edmonds . Flight Lieutenant George Dacre accompanied Edmonds on his flight in his own aircraft , but suffered engine troubles and had to land in the Dardanelles . He was taxiing on the water when he encountered a large steam tugboat , which he promptly torpedoed . After taxiing for several miles he was able to get airborne again and was within gliding distance of Ben @-@ my @-@ Chree when his engine failed permanently . 
