4 August 1915Probably mined in the North SeaHMS C33 had been operating with the trawler Malta in an attempt to entice German submarines into attacking the trawler. C33 would be towed behind the trawler ready to attack any German vessel that closed to take a look. Having completed the patrol C33 and Malta parted company at 2015. The last contact with the submarine was a wireless message at 2150. No further contact was made and a search failed to locate any wreckage or survivors. The Germans made no claims for her sinking and it is therefore believed that the submarine must have hit a mine.
19 August 1915Ran aground off Danish coastJust after 2300 on 17th August 1915 a faulty compass forced HMS E13 aground on a mud bank in Danish Territorial waters. All attempts to re-float the submarine failed and by the dawn of the 19th both German and Danish vessels were in the area. Under International Law a belligerent warship is allowed sanctuary in neutral waters for up to 24 hours. At 0500 on the 19th E13 was informed by the Danish ship Narvalen that she had 24 hours within which to re-float. With previous attempts having failed E13 attempted to gain a tow from the Danish vessels in the area. At 0928 two German destroyers were seen to be closing at high speed and flying the signal "Abandon Ship Immediately" The destroyers opened fire with torpedoes and machine guns. The crew of E13 who were resting on the casing were caught unawares and immediately abandoned the submarine and headed for the Danish ships and Internment.
29 August 1915Mined in North SeaOn 29th August 1915 HMS C29 and the trawler Ariadne were carrying out anti U-boat duties off the Outer Dowsing Light Vessel off the Humber in the North Sea. The submarine was under tow and in telephone contact with the trawler when the mine exploded.
4 September 1915Scuttled at A/S Nets in DardanellesAt 0700 on 4th September 1915 HMS E7 dived to 100 feet in an attempt to break through the anti-submarine nets at Nagara Point in the Dardanelles. The attempt failed when the starboard propeller became entangled in the nets. All attempts to free the vessel failed and drew the attention of the Turkish craft in the area. After successive attacks E7 was forced to surface. Once the crew had been removed to safety, the vessel was scuttled.
6 November 1915Torpedoed in Sea of Marmara by UB14On 30th October 1915 the French submarine Turquoise ran aground near Nagara Point, in the Dardanelles. With the submarine directly under the Turkish shore batteries the French crew hastily abandoned ship. Unfortunately for E20, who was due to rendezvous with the Turquoise, the French Captain had failed to destroy his confidential papers. The Germans now knew of the rendezvous and despatched UB 14 to intercept the unsuspecting E20. UB14 first sighted E20 at 1600 on the 6th November, and 1700 at a range of 550 yards she fired a single torpedo scoring a direct hit.
26 December 1915Mined off HarwichOn 26th December 1915 HMS E6 left Harwich to carry out an anti-submarine patrol in the North Sea. As the submarine neared the Sunk Light Vessel she was signalled by a patrolling torpedo boat to keep clear. E6 continued on her course and within view of the torpedo boat struck a mine and disappeared.
6 January 1916Scuttled off Texel Island after striking submerged rockWhilst patrolling north of Texel Island on Thursday 6th January 1916, HMS E17 struck an uncharted sandbank. Badly damaged the submarine was forced to surface. The Royal Netherlands Navy Cruiser Noord Brabant approached the stricken submarine to investigate. E17 believing the Cruiser was belligerent submerged, but owing to the damage was forced to surface again. E1 signalled the un-identified cruisers for assistance and her crew were taken off and interned. E17 finally sank at 1140 on Thursday 6th January 1916.
19 January 1916Ran aground off Ameland Island (No loss of life)On 18th January H6 ran aground off the island of Schiermonikoog. A boat from the destroyer Firedrake brought off 2 officers, 10 men and the ship's papers. The remainder of the crew, including C.O., were rescued by the Dutch and interned at Groningen. The Dutch pulled H6 off the sands a month later. The submarine was sold to the Royal Netherlands Navy in February 1916, renamed O8, and taken over by the German Navy during WW II for use as a training boat.
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