<p>E7 was launched by Miss Anson, the daughter of the Admiral Superintendent at Chatham at the time, Rear Admiral Charles Anson on 2nd October 1913.
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E7 was stationed in Harwich, conducting patrols in Heligoland Bight, but was sent to the Sea of Marmara in June 1915,but on 4th September 1915, while attempting to pass under the Turkish anti-submarine nets at Nagara, one of her propellers became entangled. Her attempts to free herself did not pass unnoticed by the Turks and they soon started attacking the boat with bombs dropped from small boats.At the time, the German submarine UB-14 was undergoing repairs at Chanak. Her commander heard the explosions and decided to take a close look at what was going on. He and the U-Boat’s cook went out in a small rowing boat to observe the action. On seeing that the Turks efforts were having no effect, they decided to use a plumb-line in an attempt to find the British submarine. The line was repeatedly dropped until he felt it contact metal. they  then dropped a Turkish sinker mine with a shortened fuse right on top of E7. By the time this happened, E7 had been trapped in the net for 12 hours. The explosion was too close for comfort and with his crew running short of air, Lt-Cdr Cochrane realised the game was up. Once the confidential papers had been destroyed and the scuttling charges set, he ordered that E7 be surfaced to allow the crew to escape. After everyone was off the boat, the charges were set off and E7 went to the sea-bed for good. E7′s officers and crew were taken into captivity for the rest of the war.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/59759366@N02">Harwich &amp; Dovercourt</a> from Dovercourt, United Kingdom
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/harwichs/6694716291/">E07</a>