HMS E11
HMS "E11" was an E-class submarine of the Royal Navy launched on 23 April 1914. "E11" was one of the most successful submarines in action during the 1915 naval operations in the Dardanelles Campaign, sinking over 80 vessels of all sizes in three tours of the Sea of Marmara. Design. Like all post-"E8" British E-class submarines, "E11" had a displacement of at the surface and while submerged. She had a total length of and a beam of . She was powered by two Vickers eight-cylinder two-stroke diesel engines and two electric motors. The submarine had  a maximum surface speed of and a submerged speed of . British E-class submarines had fuel capacities of of diesel and ranges of when travelling at . "E11" was capable of operating submerged for five hours when travelling at . "E11" initially did not have a deck gun. After her first Dardanelles tour, she was fitted with a 12-pounder QF by the dockyard in Malta. She had five 18 inch (450 mm) torpedo tubes, two in the bow, one either side amidships, and one in the stern; a total of 10 torpedoes were carried. E-Class submarines had wireless systems with  power ratings; in some submarines, these were later upgraded to systems by removing a midship torpedo tube. Their maximum design depth was although in service some reached depths of below . Some submarines contained Fessenden oscillator systems. Crew. Her complement was three officers and 28 men. Service history. European operations. In September 1914, , a submarine of neutral Denmark displaying her pennant number of "3" on her conning tower, was mistaken for the German U-boat by "E11". A launched torpedo from "E11" that missed its mark spared "Havmanden". In October 1914 "E11", under the command of Lieutenant-Commander Martin Nasmith, was  dispatched to the Baltic Sea along with two other submarines, but was twice intercepted by German patrols, and forced to return to Harwich. During the Scarborough Raid in December 1914, the "E11" attempted to intercept the German battlecruisers, but failed due to faulty torpedoes. "E11" took part in the Cuxhaven Raid, which culminated on 25 December 1914 in the attack by seven seaplanes from the aircraft tenders , , and (escorted by three cruisers and several destroyers of the Harwich Force) on Zeppelin sheds and other military targets near Cuxhaven. Four of the aircraft failed to regain their ships; three of them  landed at the rendezvous point where "E11" was waiting and were scuttled, the crews being taken on board. Mediterranean operations. In May 1915, still commanded by Nasmith, "E11" arrived at the Dardanelles to join the submarine campaign in the Sea of Marmara. "E11" was the second submarine to undertake a successful tour, following the which had passed through the straits on 27 April. The "E11" passed through the Dardanelles on the night of 18 May. Surfacing off the town of Gallipoli, Nasmith captured a Turkish sailing vessel and lashed it to the conning tower to act as a disguise. However , this ruse failed to attract any targets, so after several days he abandoned it. Travelling up the Sea of Marmara, he sank a gunboat and several other small craft on 23 May. The following day, near the port of Rodosto (today Tekirdağ), "E11" encountered the Turkish transport "Nagara", laden with ammunition. Aboard the transport was an American journalist, Raymond Gram Swing, from the "Chicago Daily News". Nasmith sank the ship after it was abandoned by the crew and passengers. Nasmith sank another transport and forced one aground before being driven away from the shore by some Turkish cavalry. On 25  May 1915 "E11" reached Constantinople (now Istanbul). Nasmith was searching for the German warships and , but when he surfaced at 12:40, he sighted the elderly transport "Stamboul" lying alongside the Tophane Arsenal. Nasmith's first torpedo ran in a circle and nearly struck the "E11", however the second torpedo hit "Stamboul". Under fire from shore-based artillery, "E11" dived to make her escape. Caught in the strong Bosphorus current, "E11" was out of control for 20 minutes until she settled on the bottom near the Leander Tower. "Stamboul" failed to sink, but was beached at Harem. "E11's" attack on  Constantinople, the first by an enemy vessel in over 100 years, had an enormous impact on Turkish morale, causing a panic in the city and compelling "Goeben" to shift to a safer mooring. "E11" returned to the Bosphorus approaches on 27 May and sank more ships, but running short of torpedoes and with mounting mechanical problems, Nasmith headed home on 5 June. On his return passage through the Dardanelles he encountered an anchored transport near the Moussa Bank which, despite his vulnerable position and the poor state of the submarine, he attacked and sank with his final torpedo. Passing through  the Narrows near Kilid Bahr, "E11" snagged a moored mine. Nasmith had to tow the mine out of the straits before he was able to disentangle the submarine. On "E11's" first tour, eleven ships were sunk or disabled. For this successful tour Nasmith was awarded the Victoria Cross, the third submarine commander to receive the award during the Dardanelles Campaign. "E11" was on her second tour when, on 6 August, she successfully torpedoed the Turkish torpedo cruiser , causing serious damage. Two days later 8 August 1915 as a new British landing was underway at Suvla, "E11" torpedoed the antiquated  Turkish pre-dreadnought battleship off Bulair at the northern entrance to the Dardanelles. The ship sank with the loss of 21 officers and 237 men. "Barbaros Hayreddin" was one of two Ottoman battleships sunk during the campaign. Visiting Constantinople again, "E11" sank a Black Sea collier "Isfahan" as it was preparing to unload — a significant blow as coal was the main fuel source and supplies were scarce. Moving into the Gulf of Izmit, on the night of 20 August, "E11's" first officer, Lieutenant Guy D'Oyly-Hughes, swam ashore and blew up a section of the Constantinople–Baghdad railway line , a feat for which he was awarded the Distinguished Service Cross (United Kingdom). Navigating Officer Lieutenant Robert Brown was also awarded the Distinguished Service Cross (United Kingdom). A reservist from the Merchant Navy, Brown had famously been born rounding the Cape Horn on the clipper "John Gambles", the sister ship to the more famous "Cutty Sark". "E11" made three tours of the Sea of Marmara and sank in total 27 steamers and 58 smaller vessels.