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Successful Submarine Operations in the Sea of Marmara during World War I
- Learn about the successful submarine operations carried out in the Sea of Marmara during World War I by the Allies.
- HMS E14 and E11 were two submarines that made multiple tours of the Sea of Marmara, sinking several ships and disrupting Ottoman communications.
- The French attempts to enter the Sea of Marmara were met with challenges and losses, including the capture of their submarine Turquoise.
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He had been present when de Robeck assumed command from Carden and was more senior but had been commanding the base at Mudros whereas de Robeck was with the fleet. Churchill had preferentially chosen de Robeck. On 7 December, it was decided by Cabinet to abandon the campaign. British submarine attacks had commenced in 1914, before the campaign proper had started. On 13 December, the submarine HMS B11 (Lieutenant-Commander Norman Holbrook) had entered the straits, avoiding five lines of mines and torpedoed the Ottoman battleship Mesûdiye, built in 1874, which was anchored as a floating fort in Sari Sighlar Bay, south of Çanakkale. Mesûdiye capsized in ten minutes, trapping many of the 673-man crew. Lying in shoal water, the hull remained above the surface so most men were rescued by cutting holes in the hull but 37 men were killed. The sinking was a triumph for the Royal Navy. Holbrook was awarded the Victoria Cross—the first Royal Navy VC of the war—and all twelve other crew members received awards. Coupled with the naval bombardment of the outer defences on 3 November, this success encouraged the British to pursue the campaign. The first French submarine operation also preceded the start of the campaign; on 15 January 1915, the French submarine Saphir negotiated the Narrows, passing the ten lines of mines before running aground at Nagara Point. Various accounts claim she was either mined, sunk by shellfire or scuttled, leaving fourteen crew dead and thirteen prisoners of war. On 17 April, the British submarine HMS E15 attempted to pass the straits but having dived too deep, was caught in a current and ran aground near Kepez Point, the southern tip of Sarı Sıĝlar Bay, under the guns of the Dardanos battery. Seven of the crew were killed and the remainder were captured. The beached E15 was a valuable prize for the Ottomans and the British went to great lengths to deny it to them and managed to sink it after numerous attempts. The first submarine to pass the straits was the Australian HMAS AE2 (Lieutenant-Commander Henry Stoker) which got through on the night of 24/25 April. The army landings at Cape Helles and Anzac Cove began at dawn on 25 April. Although AE2 sank one Ottoman destroyer, thought to be a cruiser, the submarine was thwarted by defective torpedoes in several other attacks. On 29 April, in Artaki Bay near Panderma, AE2 was sighted and hit by the Ottoman torpedo boat Sultanhisar. Abandoning ship, the crew was taken prisoner.
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On 5 September 1914, U-21 commanded by Lieutenant Otto Hersing made history when he torpedoed the Royal Navy light cruiser HMS Pathfinder. The cruiser's magazine exploded, and the ship sank in four minutes, taking 259 of her crew with her. It was the first combat victory of the modern submarine. The German U-boats were to get even luckier on 22 September. Early in the morning of that day, a lookout on the bridge of U-9, commanded by Lieutenant Otto Weddigen, spotted a vessel on the horizon. Weddigen ordered the U-boat to submerge immediately, and the submarine went forward to investigate.
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The Battle of Krithia Vineyard (6–13 August 1915) was fought during the Gallipoli Campaign during the First World War. It was originally intended as a minor British action at Helles on the Gallipoli peninsula to divert attention from the imminent launch of the August Offensive, but instead, the British commander, Brigadier General H.E. Street, mounted a futile and bloody series of attacks that in the end gained a small patch of ground known as "The Vineyard".The original commander of the British VIII Corps at Helles, Lieutenant General Aylmer Hunter-Weston, had departed the peninsula in July, following the last Helles offensive—the Battle of Gully Ravine. His replacement, Lieutenant General Francis Davies, arrived in early August but had not yet assumed command of the corps when a series of diversions were due to be launched from Anzac and Helles to divert Ottoman attention from the planned landing at Suvla and the break out from Anzac. Consequently, the Helles diversion was planned and conducted by the VIII Corps' chief of staff, Brigadier General H.E. Street, who proved himself an able student of Hunter-Weston's battle strategy.Due to the shortage of artillery, the attack was split into two parts with the 88th Brigade of the 29th Division attacking on the afternoon of 6 August while two brigades of the 42nd (East Lancashire) Division would attack the following day. They were facing four Ottoman divisions, three of which were fresh, while there were two more divisions in reserve. The 88th Brigade's attack managed to capture some Ottoman trenches, which were recaptured by the Ottoman 30th Regiment during a counter-attack. The British attacked again and once more captured some trenches, but the Ottomans counter-attacked again and drove them out. The British failed to hold any ground and the 88th Brigade was effectively destroyed as a fighting force. At around 9:40 am on the morning of 7 August the 42nd Division attacked on the right of the 88th Brigade's sector. The 127th Brigade managed to break through the line held by the Ottoman 13th Division, but were forced back by an Ottoman counter-attack. The Ottomans counter-attacked repeatedly from 7 August to 9 August and the fighting in the area continued until 13 August when it finally subsided. Afterwards, this sector of the Helles front would remain one of the busiest and most violent for the remainder of the campaign.Two Victoria Crosses were awarded to men of the 42nd Division during the fighting at Krithia Vineyard. The British casualties in the first 24 hours of fighting, covering the original attacks of the 88th Brigade and the two brigades of the 42nd Division, were 3,469. The total British casualties for the duration of the battle were probably in excess of 4,000. The Ottoman casualties for the period of the battle were estimated to be around 7,000.
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On 11 December, a British column sent to Duwwar Hussein was attacked along the Matruh–Sollum track and in the Affair of Wadi Senba, drove the Senussi out of the wadi. The reconnaissance continued and on 13 December at Wadi Hasheifiat, the British were attacked again and held up until artillery came into action in the afternoon and forced the Sanussi to retreat. The British returned to Matruh until 25 December and then made a night advance to surprise the Sanussi. At the Affair of Wadi Majid, the Sanussi were defeated but were able to withdraw to the west. Air reconnaissance found more Senussi encampments in the vicinity of Matruh at Halazin, which was attacked on 23 January, in the Affair of Halazin. The Senussi fell back skilfully and then attempted to envelop the British flanks. The British were pushed back on the flanks as the centre advanced and defeated the main body of Senussi, who were again able to withdraw. In February 1916, the Western Frontier Force was reinforced and a British column was sent west along the coast to re-capture Sollum. Air reconnaissance discovered a Senussi encampment at Agagia, which was attacked in the Action of Agagia on 26 February. The Senussi were defeated and then intercepted by the Dorset Yeomanry as they withdrew; the Yeomanry charged across open ground swept by machine-gun and rifle fire. The British lost half their horses and 58 of 184 men but prevented the Senussi from slipping away. Jaafar Pasha, the commander of the Senussi forces on the coast, was captured and Sollum was re-occupied by British forces on 14 March 1916, which concluded the coastal campaign.
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The last success of the year came on 31 December. SM U-24 sighted the British battleship HMS Formidable on manoeuvres in the Channel and torpedoed her. Formidable sank with the loss of 547 of her crew. The C-in-C Channel Fleet, Adm. Sir Lewis Bayly, was criticized for not taking proper precautions during the exercises, but was cleared of the charge of negligence. Bayly later served with distinction as commander of the anti-submarine warfare forces at Queenstown.
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By the evening of 19 August, the French occupied the city, having captured 24 guns, 3,000 prisoners and considerable amounts of equipment. With the capture of the Rhine bridges and valleys leading into the plain, the French had gained control of Upper Alsace but on 26 August the French withdrew from Mulhouse to a more defensible line near Altkirch, to provide reinforcements for the French armies closer to Paris. The Army of Alsace was dissolved on 26 August and many of its units distributed among the remaining French armies.[6] In September 1914, the German 7th Army was transferred to the Aisne and left three Landwehr brigades in Oberelsaß (Upper Alsace). The force was named Armee-Gruppe Gaede (an improvised force larger than a corps and smaller than an army and subordinate to an army headquarters) on 19 September 1914, after its commander General der Infanterie Hans Gaede (formerly the chief of staff of the XIV Corps) and renamed Armee-Abteilung Gaede on 30 January 1915. On 25 December, the French 66th Division and a battalion of Chasseurs Alpins attacked through deep snow and woods, to improve the French position on the peak of Hartmannswillerkopf. The French attack was a success but the German defenders were pushed back only a short distance. Division Fuchs of Armee-Abteilung Gaede attacked on a line from Hartmannswillerkopf to the Herrengluh ruins, Wolfskopf and Amselkopf in thick fog from 18–21 January 1915 and managed to surround the French positions, recapture the summit of Hartmannswillerkopf and Hirzstein to the south. The French counter-attacked but were repulsed and the main German attack on 30 January near Wattwiller made early progress then bogged down against the French defences. French attacks against Division Fuchs from 19–27 February were repulsed but on 26 February, a French attack gained 110 yards (100 m). On 5 March, the French captured a blockhouse and a German counter-attack by two regiments was defeated. The 152nd Infantry Regiment arrived to reinforce the Chasseurs Alpins and after a four-hour artillery preparation, the infantry and chasseurs captured two trench lines and took 250 prisoners but failed to penetrate new German trench lines close to the peak. The French attacked again on 17 and from 23 March – 6 April and then on 26 March, after a preparatory bombardment, the 152nd Regiment captured the summit of Hartmannswillerkopf in ten minutes, taking 400 prisoners and finding that the ground had been stripped of trees by the artillery exchanges. The Germans suspended the offensive at Wattwiller and Steinbach to concentrate all reserves in the Hartmannswillerkopf area but on 17 March, the German army chief of staff, General Erich von Falkenhayn, ordered offensive operations in Alsace to cease.
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The Admiralty wished to prevent the station from being used to co-ordinate attacks on shipping in the Atlantic. At the outbreak of war the Governor of Togoland, Duke Adolf Friedrich of Mecklenburg was in Germany and his deputy, Major Hans-Major Georg von Döring was the acting-Governor. Sir Hugh Clifford, the Governor of the Gold Coast, Lieutenant-General Charles Macpherson Dobell, commander of the West African Frontier Force (WAFF) and Lieutenant-Colonel R. A. de B. Rose, commander of the Gold Coast Regiment were absent during July 1914. W. C. F. Robertson was the acting-Governor and Captain Frederick Bryant was acting-Commandant of the Gold Coast Regiment. The Gold Coast Regiment had one pioneer company, seven infantry companies with a machine-gun each, and a battery of four QF 2.95-inch Mountain Guns, amounting to 1,595 men including 124 carriers and about 330 reservists. There were four "Volunteer Corps" with about 900 men and 1,200 police and customs officers. The Defence Scheme for the Gold Coast (1913) provided for war against the French in neighbouring Ivory Coast and the Germans in Togoland; in the event of war with Germany, the colony was to be defended along Lake Volta and the north-eastern frontier against the possibility of a raid, which was the most that the Germans in Togoland were thought capable of. The plan also provided for an offensive across the lake into the north of Togoland, before making a thrust south to the more populated portion of the colony. On 29 July, a Colonial Office telegram arrived at Accra, ordering the adoption of the precautionary stage of the Defence Scheme and Robertson forwarded the information to Bryant the next day. Bryant dispensed with the Scheme, which had not been revised after the wireless station at Kamina was built and by 31 July, had mobilised the Gold Coast Regiment along the southern, rather than the northern border with Togoland. In London on 3 August, Dobell proposed an advance if war was declared, along the coast road from Ada to Keta and thence to Lomé, which was fewer than 2 mi (3.2 km) from the border. Bryant had reached the same conclusion as Dobell and had already organised small expeditionary columns at Krachi and Ada and assembled the main force at Kumasi, ready to move in either direction. On 5 August 1914, a day after Britain declared war on Germany, the Allies cut the German sea cables between Monrovia and Tenerife, leaving the radio station at Kamina the only connexion between the colony and Germany. The same day the acting-Governor of Togoland, Döring sent a telegram to Robertson proposing neutrality, in accordance with articles X and XI of the Congo Act, which stated that colonies in the Congo Basin were to remain neutral in the event of a conflict in Europe.
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The Director of the Intelligence Division of the Admiralty, Rear-Admiral Henry Oliver, established a code breaking organisation to decipher German signals, using cryptographers from academic backgrounds and making use of the windfalls taken from the German ships. At first, the inexperience of the cryptanalysts in naval matters led to errors in the understanding of the material and this lack of naval experience caused Oliver to make personal decisions about the information to be passed to other departments, many of which, particularly the Operations Department, had reservations about the value of Room 40. The transfer of an experienced naval officer, Commander W. W. Hope, remedied most of the deficiencies of the civilians' understanding. On 14 October, Oliver became Chief of the Naval War Staff, but continued to treat Room 40 more as a fiefdom and a source for the informal group of officers around the First Lord of the Admiralty, Winston Churchill, which received decoded messages but had insufficient authority to use them to best advantage. German ships had to report their position every night by wireless and British listening posts along the east coast took cross-bearings to find the positions of the ships when they transmitted. This signals intelligence meant that the British did not need wasteful defensive standing patrols and sweeps of the North Sea but could economise on fuel and use the time for training and maintenance. The Admiralty also uncovered the German order of battle and tracked the deployment of ships, which gave them an offensive advantage. The lack of a proper war staff at the Admiralty and poor liaison between Room 40, Oliver and the operations staff, meant that the advantage was poorly exploited in 1915. (It was not until 1917 that this was remedied.) When German ships sailed, information from Room 40 needed to be passed on quickly but Oliver found it hard to delegate and would not routinely supply all decrypts; commanders at sea were supplied only with what the Admiralty thought they needed. Information could reach the Grand Fleet late, incomplete or mistakenly interpreted. When Jellicoe asked for a decryption section to take to sea, he was refused on security grounds. With the German High Seas Fleet (HSF) confined to port after the British success at the Battle of Heligoland Bight in 1914, Admiral Friedrich von Ingenohl, the Commander-in-Chief of the HSF planned a raid on Scarborough, Hartlepool and Whitby on the east coast of England, with the I Scouting Group (Admiral Franz von Hipper), a battlecruiser squadron of three battlecruisers and a large armoured cruiser, supported by light cruisers and destroyers.
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The British commander General Edmund Allenby needed to establish a defensive line running from the Mediterranean Sea which could be held with reasonable security once his right flank was secured on the Dead Sea. In order to consolidate a strong British line, it was necessary to push the 3rd and 7th Divisions, part of the XXII Corps, of the Ottoman Eighth Army away from the Nahr el Auja 4 miles (6.4 km) north of Jaffa on the Mediterranean coast. The river was defended on the northern bank, by a trench system, from Mulebbis and Fejja to Bald Hill. From Mulebbis to the sea the river is between 40 to 50 feet (12 to 15 m) wide and 10 feet (3.0 m) deep except for the ford. The first attack across the Nahr el Auja, was little more than a raid, on the night of 24/25 November by two infantry battalions from the 54th (East Anglian) Division and the New Zealand Mounted Rifles Brigade. The outnumbered battalions, were driven back by the Ottoman defenders, as they recaptured the bridgeheads and restored the tactical situation. Three infantry divisions of the British XXI Corps, under the command of Lieutenant General Edward Bulfin, began moving their units into position on the coastal plain on 7 December. The 75th Division was on the right with the 54th (East Anglian) Division in the centre and the 52nd (Lowland) Division on the left at the coast. The 162nd (East Midland) Brigade, relieved the New Zealand Mounted Rifles Brigade in the front line on 11 December and the mounted riflemen, who had been heavily involved in the earlier attempt to capture the Nahr el Auja, moved back to bivouac near Ayun Kara. On 14 December Major General John Hill, the commanding officer of the Lowland Division, submitted a plan for a surprise assault across the river by his division. Artillery was concentrated behind the lines, while the division's Royal Engineers, formed pontoons and canvas coracle boats, that were large enough to accommodate twenty men. It had initially been planned for a heavy artillery bombardment to proceed the attack, however Hill suggested they instead try a surprise attack without the artillery bombardment.
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After a shell explosion, the commander of Fort de Boussois was evacuated with shell shock; during the night of 31/31 August, the morale of the garrison collapsed and the men fled to Maubeuge, some claiming that the fort had been captured. Had the Germans realised that Fort de Boussois was undefended and rushed in, the remaining defences of the Entrenched Position would have become untenable. Fournier sent immediately a battalion of the 145th Infantry Regiment to reoccupy Fort de Boussois, which managed to reoccupy the fort before the Germans realised. On 31 August, Fournier appointed Captain Tarubal, an engineer officer, to hold Fort de Boussois with the 11th Company of Territorial Engineers. Fournier had received information from civilians that the German siege guns had been established in the Erquelines quarries and behind the villages of Grand Reng, Vieux Reng and Rouveroy. A big sortie by the general reserve was planned to destroy the German batteries. Fournier ordered that two Territorial battalions were to cover the flanks of the general reserve, one facing Villers Sire Nicole and the other south of the Sambre towards Ferme Watissart. Two columns were to advance in the centre, the 31st Colonial Infantry Regiment on Vieux Reng and the 145th Infantry Regiment on the Erquelines sand quarries. The commander of the reserve passed on the orders from Fournier but neglected to nominate an axis of advance, which led to uncoordinated attacks and in the rush there was insufficient liaison between the infantry and the fortress artillery. The 31st Colonial Infantry Regiment advanced quickly into a deluge of artillery and machine-gun fire and reached the fringe of Vieux Reng. Units moving up in support joined the survivors but they were pinned down by machine-gun fire from the houses. Germans were rushed to the threatened area and eventually the French were forced to retreat. The 345th Reserve Infantry Regiment attacked as the Colonials retreated but was also pushed back, ending the attack on the left flank. On the right flank, the 145th Infantry Regiment failed to get across the Vieux Reng–Marpent road. The commanders of the columns ordered a general retreat, the sortie being a bloody failure. The German artillery firing on the French attackers resumed the bombardment of the fortifications and the town. A huge bombardment began on the defences of the third sector from Fort de Cerfontaine to the Sambre. At Fort de Cerfontaine a 420 mm shell pierced the earth cover and detonated in a shelter where sixty troops had just taken cover. The men not killed by falling masonry were choked by the exhaust gases of the exploding shell.
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