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124-541: In the British Admiralty charts it is called Eight Degree Channel . It is so named as it lies on the 8-degree line of Latitude , north of the equator . Another local name for this channel is Addigiri Kandu. This channel appeared in old French maps with the name Courant de Malicut . Traditionally the northernmost atoll of the Maldives was Minicoy (Maliku). Fishermen from Thuraakunu and from Minicoy often crossed

248-402: A burin . The plate was inked, and the excess ink wiped from the flat surface before printing, so that ink remained only in the engraved lines ( intaglio printing). The process allowed very fine detail to be printed, but was slow. When corrections or alterations were needed to a chart, the copper was hammered from behind, the raised section scraped and smoothed, and the new information engraved on

372-639: A truce was organised by Aubrey Herbert and others on 24 May, to bury the dead lying in no man's land , which led to a camaraderie between the armies, much like the Christmas truce of 1914 on the Western Front. A witness account from Private Victor Laidlaw of the Australian 2nd Field Ambulance described the day, The armistice was declared from 8:30 a.m. this morning till 4:30 p.m. it is wonderful, things are unnaturally quiet and I felt like getting up and making

496-673: A "sense of superiority" among the Entente, because of the decline of the Ottoman Empire and its poor performance in Libya during the Italo-Turkish War of 1911–1912 and the Balkan Wars of 1912 and 1913. Entente intelligence failed to adequately prepare for the campaign, in some cases relying on information gained from Egyptian travel guides. The troops for the assault were loaded on transports in

620-544: A bay just south of Ari Burnu, due to undetected currents or a navigational error. The landing was more difficult, over ground which rose steeply from the beaches, unlike the objective to the south, which was more open. The landing site was garrisoned by only two Ottoman companies but from positions on commanding ground, the Ottomans inflicted numerous casualties on the Australians before being overcome. The broken terrain prevented

744-426: A commander at Gallipoli, as founder and president . The campaign is often considered to be the beginning of Australian and New Zealand national consciousness . The anniversary of the landings, 25 April, is known as Anzac Day , the most significant commemoration of military casualties and veterans in the two countries, surpassing Remembrance Day ( Armistice Day ). On 29 October 1914, two former German warships,

868-726: A convenient A2 size, are produced for leisure users. Alongside its paper charts, UKHO produces an expanding range of digital products to fulfil the impending compulsory carriage requirements of ECDIS/ENCs, as issued by the International Maritime Organization (IMO) . The digital range comprises Electronic Navigational Charts (ENCs) for use with an Electronic Chart Display and Information System (ECDIS) , which can be displayed and interrogated through Admiralty Vector Chart Service (AVCS). The range also includes Admiralty Raster Chart Service (ARCS), which allows paper nautical charts to be viewed in raster form on an ECDIS. Due to

992-413: A coordinated drive inland, with the Australians on unfamiliar ground and with inaccurate maps. In the maze of steep ravines, spurs and dense scrub, Australian parties that got forward quickly lost contact and were broken up into small groups. Some Australian troops reached the second ridge but fewer still reached their objectives and, having become dispersed, the covering force could provide little support to

1116-498: A destroyer. The submarine ran aground beneath a Ottoman fort but the Ottoman gunners could not bring their guns to bear and AE2 was manoeuvred free. Shortly after refloating, the periscope was sighted by a Ottoman battleship firing over the peninsula at Entente landing sites and the ship ceased fire and withdrew. AE2 advanced toward the Sea of Marmara and, at 08:30 , Stoker decided to rest

1240-454: A hill at Ariburnu saw a multitude of ships far on the horizon. Captain Faik, in charge of a company from the 27th Infantry Regiment verified it with his binoculars and immediately informed his commanding officer, Ismet Bey, at Kabatepe. By 3:00 a.m., the moon was covered and the ships were no longer visible to the Ottomans. The Ottomans were not sure if this was a real landing or a diversion. Once

1364-439: A horizontal line across an area to detect hazards that might be missed by individual soundings. Echo sounding was introduced in the 1920s, and Percy Douglas , hydrographer from 1924 to 1932, was a strong advocate of this method. As well as increasing productivity, it enabled continuous monitoring along a sounding line, reducing the chance of a hazard being missed. Isolated rocks between sounding lines could still be missed, and it

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1488-461: A landing on either side of the Straits was the 5th Army . This force, which initially consisted of five divisions with another en route, was a conscript force, commanded by Sanders. Many of the senior officers in the 5th Army were also German. Ottoman commanders and senior German officers debated the best means of defending the peninsula. All agreed that the best defence was to hold the high ground on

1612-696: A large number are down bathing and you would think today was Cup Day down at one of our seaside beaches. The truce was not repeated formally. The British advantage in naval artillery diminished after the battleship HMS  Goliath was torpedoed and sunk on 13 May by the Muâvenet-i Millîye , killing 570 men out of a crew of 750, including the ship's commander, Captain Thomas Shelford. A German submarine, U-21 , sank HMS  Triumph on 25 May and HMS  Majestic on 27 May. More British reconnaissance patrols were flown around Gallipoli and U-21

1736-404: A major shipping lane. Several attempts to find this were made before HMS Stork found it (and nearly struck it) in 1888. It was named Avocet Rock after the first ship to strike it. Technical developments over the years improved surveying methods and the accuracy of the charts. For depth determination, methods of measuring depth from a moving ship were developed, as well as "sweeping", dragging

1860-430: A minimum of troops guarding the coast. The 3rd Division and a cavalry brigade arrived from Istanbul in early April, bringing the front line strength of the Ottomans to 60,000–62,077 men, which Sanders concentrated in three groups. A maximum effort to improve land and sea communications was ordered, to move reinforcements swiftly to danger points; troops moving at night to avoid Entente air reconnaissance. Sanders' strategy

1984-456: A row myself, the rifle fire is quiet, no shell fire. The stench round the trenches where the dead had been lying for weeks was awful, some of the bodies were mere skeletons, it seems so very different to see each side near each other's trenches burying their dead, each man taking part in the ceremonies is called a pioneer and wears 2 white bands on his arms, everybody is taking advantage of the armistice to do anything they want to do out of cover and

2108-450: A scale of 1:50,000 or smaller (1:100,000 is a smaller scale than 1:50,000) use the Mercator projection , and have since at least the 1930s. The Mercator projection has the property of maintaining angles correctly, so that a line on the earth's surface that crosses all the meridians at the same angle (a rhumb line ) will be represented on the chart by a straight line at the same angle. Thus if

2232-544: A shore overlooked by dunes and obstructed with barbed wire. On both beaches, the Ottoman defenders occupied good defensive positions and inflicted many casualties on the British infantry as they landed. Troops emerging one by one from sally ports on River Clyde were shot by machine-gunners at the Seddülbahir fort and, of the first 200 soldiers to disembark, 21 men reached the beach. The Ottoman defenders were too few to defeat

2356-453: A straight line is drawn on the chart from A to B, and the angle determined, the ship may sail at a constant bearing at that angle to reach B from A. Allowances for magnetic variation and magnetic deviation must also be made. However, a rhumb line is not in general the shortest distance between two points, which is a great circle . (The equator and lines of longitude are both great circles and rhumb lines.) When navigating over longer distances

2480-468: A three-week patrol, which became one of the most successful Entente naval actions of the campaign, in which four ships were sunk, including the transport Gul Djemal which was carrying 6,000 troops and a field battery to Gallipoli. While the quantity and value of the shipping sunk was minor, the effect on Ottoman communications and morale was significant; Boyle was awarded the Victoria Cross. Following

2604-422: A transport alongside the arsenal, sinking a gunboat and damaging the wharf. The Ottoman forces lacked artillery ammunition and field batteries were only able to fire c.  18,000 shells between early May and the first week of June. After the defeat of the counter-attack at Anzac in mid-May, the Ottoman forces ceased frontal assaults. Late in the month, the Ottomans began tunneling around Quinn's Post in

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2728-664: The Kaiserliche Marine (Imperial German Navy) and the entrance to the Black Sea through the Dardanelles was controlled by the Ottoman Empire. While the Ottomans remained neutral, supplies could be sent to Russia through the Dardanelles but prior to the Ottoman entry into the war, the straits had been closed; in November the Ottomans began to mine the waterway. The French politician, Aristide Briand , proposed in November to attack

2852-604: The Australian and New Zealand Army Corps (ANZAC), commanded by Lieutenant General Sir William Birdwood , comprising the volunteer 1st Australian Division and the New Zealand and Australian Division . The ANZAC troops were joined by the regular 29th Division and the Royal Naval Division . The French Corps expéditionnaire d'Orient (Orient Expeditionary Corps), initially consisting of two brigades within one division,

2976-731: The Central Powers , by taking control of the Ottoman straits . This would expose the Ottoman capital at Constantinople to bombardment by Entente battleships and cut it off from the Asian part of the empire. With the Ottoman Empire defeated, the Suez Canal would be safe and the Bosphorus and Dardanelles straits would be open to Entente supplies to the Black Sea and warm-water ports in Russia. In February 1915

3100-792: The Dardanelles campaign , the Defence of Gallipoli or the Battle of Gallipoli ( Turkish : Gelibolu Muharebesi , Çanakkale Muharebeleri or Çanakkale Savaşı ) was a military campaign in the First World War on the Gallipoli peninsula (now Gelibolu) from 19 February 1915 to 9 January 1916. The Entente powers, Britain , France and the Russian Empire , sought to weaken the Ottoman Empire , one of

3224-761: The First Battle of Ypres in Flanders. The war of manoeuvre had evolved into trench warfare . The German Empire and Austria-Hungary closed the overland trade routes between Britain and France in the west and Russia in the east. The White Sea in the Arctic and the Sea of Okhotsk in the Far East were icebound in winter and distant from the Eastern Front ; the Baltic Sea was blockaded by

3348-590: The Hydrographic Office. This department of the Admiralty was established under Earl Spencer by an order in council in 1795, consisting of the Hydrographer , Alexander Dalrymple , one assistant and a draughtsman. The initial remit was to organise the charts and information in the office, and to make it available to His Majesty's ships. The Hydrographic Department began printing charts in 1800, with

3472-652: The Ordnance Survey National Grid . Topography on Admiralty charts of the UK is generally based on Ordnance Survey mapping. For the small areas depicted on such maps, the differences between projections are of no practical importance. Admiralty charts are issued by the UKHO for a variety of users; Standard Nautical Charts (SNCs) are issued to mariners subject to the Safety of Life at Sea (SOLAS) convention , while chart folios, at

3596-476: The Royal Naval Air Service (RNAS) and the Entente employed a small force of seaplanes and other aircraft from 3 Squadron , RNAS (Commander Charles Samson ) which arrived at Tenedos at the end of March. The aircraft were unopposed by the small Ottoman air force at first and during the planning, the force had been used to provide aerial reconnaissance, although this ultimately proved inadequate to meet

3720-806: The United Kingdom Hydrographic Office (UKHO) and subject to Crown Copyright . Over 3,500 Standard Nautical Charts (SNCs) and 14,000 Electronic Navigational Charts (ENCs) are available with the Admiralty portfolio offering the widest official coverage of international shipping routes and ports, in varying detail. Admiralty charts have been produced by UKHO for over 200 years, with the primary aim of saving and protecting lives at sea. The core market for these charts includes over 40,000 defence and merchant ships globally. Today, their products are used by over 90% of ships trading internationally. The British admiralty charts are compiled, drawn and issued by

3844-456: The "Grand Survey of the British Isles" began with the appointment of George Thomas as Head Maritime surveyor. Thomas and a series of able surveyors including Michael Slater, Henry Otter , Charles Robinson, William Hewett and Frederick Beechey surveyed the coasts of Britain and Ireland over the next 30 years. Thomas developed techniques for extending triangulation over the shallow waters of

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3968-461: The 19th Division, reinforced by six battalions from the 5th Division, counter-attacked the six Entente brigades at Anzac. With the support of naval gunfire, the Entente held back the Ottomans throughout the night. The following day the British were joined by French troops transferred from Kum Kale on the Asiatic shore to the right of the line near 'S' Beach at Morto Bay . On 28 April, the Entente fought

4092-477: The Dardanelles, to divert Ottoman troops from Caucasia. On 17 February 1915, a British seaplane from HMS  Ark Royal flew a reconnaissance sortie over the Straits. Two days later, the first attack on the Dardanelles began when an Anglo-French flotilla, including the British dreadnought HMS  Queen Elizabeth , began a long-range bombardment of Ottoman coastal artillery batteries . The British had intended to use eight aircraft from Ark Royal to spot for

4216-500: The Entente dug in, having failed to take Krithia or Achi Baba. A brief period of consolidation followed; the Entente had almost run out of ammunition, particularly for the artillery and both sides consolidated their defences. The Ottomans relieved troops opposite the Australian line, which was reinforced by the Australian Light Horse operating as infantry. Sporadic fighting continued, with sniping, grenade attacks and raids,

4340-511: The Entente fleet failed to force a passage through the Dardanelles. An amphibious landing on the Gallipoli peninsula began in April 1915. In January 1916, after eight months' fighting, with approximately 250,000 casualties on each side, the land campaign was abandoned and the invasion force was withdrawn. It was a costly campaign for the Entente powers and the Ottoman Empire as well as for the sponsors of

4464-426: The Entente fleet, comprising 18 battleships with an array of cruisers and destroyers, began the main attack against the narrowest point of the Dardanelles, where the straits are 1 mi (1.6 km) wide. Despite some damage to the Entente ships by Ottoman return fire, minesweepers were ordered along the straits. In the Ottoman official account, by 2:00 p.m. "all telephone wires were cut, all communications with

4588-424: The Entente landed unopposed and advanced inland. There were only a small number of defenders in the village but, lacking orders to exploit the position, the "Y" Beach commander withdrew his force to the beach. It was as close as the Entente ever came to capturing the village as the Ottomans brought up a battalion of the 25th Regiment, checking any further movement. The main landings were made at "V" Beach , beneath

4712-520: The Entente planners was illustrated by a leaflet that was issued to the British and Australians while they were still in Egypt, Turkish soldiers as a rule manifest their desire to surrender by holding their rifle butt upward and by waving clothes or rags of any colour. An actual white flag should be regarded with the utmost suspicion as a Turkish soldier is unlikely to possess anything of that colour. The underestimation of Ottoman military potential stemmed from

4836-550: The Entente' intelligence needs and make up for the lack of adequate maps. After the landings, Entente aircraft conducted photographic reconnaissance, observed naval gunfire, reported on Ottoman troop movements and conducted a small number of bombing raids. Allocated the northern landing, Birdwood's force included the 1st Australian Division (Major General William Bridges ) and the New Zealand and Australian Division (Major General Sir Alexander Godley ), about 25,000 men. The force

4960-465: The First Battle of Krithia to capture the village. Hunter-Weston made a plan which proved overly complex and was poorly communicated to the commanders in the field. The troops of the 29th Division were still exhausted and unnerved by the battles for the beaches and for Seddülbahir village, which was captured after much fighting on 26 April. The Ottoman defenders stopped the Entente advance halfway between

5084-537: The German High Seas Fleet , in a Dardanelles operation, with a small occupation force provided by the army. It was hoped that an attack on the Ottomans would also draw Bulgaria and Greece into the war on the Entente side. On 2 January 1915, Grand Duke Nicholas of Russia appealed to Britain for assistance against the Ottomans, who were campaigning in the Caucasus. Planning began for a naval demonstration in

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5208-513: The Helles headland and Krithia around 6:00 p.m., having inflicted 3,000 casualties. As Ottoman reinforcements arrived, the possibility of a swift Entente victory on the peninsula disappeared and the fighting at Helles and Anzac became a battle of attrition. On 30 April, the Royal Naval Division (Major General Archibald Paris ) landed. The same day, Kemal, believing that the Entente were on

5332-455: The Maliku Kandu on their boats to visit each other's islands. Marriage alliances were common. Nowadays Minicoy is a part of India and communication between Minicoy and Maldives by sea is highly restricted. 8°00′00″N 73°00′00″E  /  8.00000°N 73.00000°E  / 8.00000; 73.00000 Admiralty charts Admiralty charts are nautical charts issued by

5456-549: The New Zealand Infantry Brigade, along with 20 Australian field guns, to the Helles front as reserves for the Second Battle of Krithia . Involving a force of 20,000 men , it was the first general attack at Helles and was planned for daylight. French troops were to capture Kereves Dere and the British, Australians and New Zealanders were assigned Krithia and Achi Baba . After 30 minutes of artillery preparation,

5580-589: The Ottoman Yavûz Sultân Selîm and Midilli , conducted the Black Sea raid , in which they bombarded the Russian port of Odessa and sank several ships. On 31 October, the Ottomans entered the war and began the Caucasus campaign against Russia. The British briefly bombarded forts in Gallipoli, invaded Mesopotamia and studied the possibility of forcing the Dardanelles. Before the Dardanelles operation

5704-403: The Ottoman Empire but this was rejected and an attempt by the British to bribe the Ottomans to join the Entente side also failed. Later that month, Winston Churchill , First Lord of the Admiralty , proposed a naval attack on the Dardanelles, based in part on erroneous reports of Ottoman troop strength. Churchill wanted to use a large number of obsolete battleships, which could not operate against

5828-489: The Ottoman guns had almost run out of ammunition but the views of de Robeck, the First Sea Lord Jackie Fisher and others prevailed. Entente attempts to force the straits using naval power were terminated, due to the losses and bad weather. Planning to capture the Ottoman defences by land, to open the way for the ships, began. Two Entente submarines tried to traverse the Dardanelles but were lost to mines and

5952-532: The Ottoman minelayer  Nusret ten days before and were also damaged. The losses forced de Robeck to sound the "general recall" to protect what remained of his force. During the planning of the campaign, naval losses had been anticipated and mainly obsolete battleships, unfit to face the German fleet, had been sent. Some of the senior naval officers like the commander of Queen Elizabeth , Commodore Roger Keyes , felt that they had come close to victory, believing that

6076-609: The Ottoman railway network, its capture would cut the empire in two. Vice Admiral Sir Richard Peirse , Commander-in-Chief, East Indies , ordered Captain Frank Larkin of HMS  Doris to Alexandretta on 13 December 1914. The Russian cruiser  Askold and the French cruiser Requin were also present. Kitchener was working on the plan in March 1915, the beginning of the British attempt to incite an Arab Revolt . The Alexandretta landing

6200-578: The Thames Estuary and the southern part of the North Sea, allowing the exact positions of treacherous sand banks to be determined for the first time. These surveys added large numbers of new charts, as well as improvements to old ones. By 1855, when Beaufort retired, the survey of the coasts of the United Kingdom was complete, and there were about 2,000 charts in the catalogue, covering all the oceans of

6324-456: The acquisition of its first printing press. Initially charts were produced only for use by the Navy, but in 1821, Thomas Hurd , who had succeeded Dalrymple as Hydrographer in 1808, persuaded the Admiralty to allow sales to the public. The first catalogue of Admiralty charts was published in 1825, and listed 756 charts. Charts were printed from copper plates. Plates were engraved, in reverse, with

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6448-575: The antiquities and natural history of the numerous places he charted. In 1841-7 Edward Belcher was engaged in the Far East, including making the first survey of Hong Kong . The longest running survey was that of Bayfield , whose survey of the Canadian coasts, the St. Lawrence River and the Great Lakes occupied him from 1816 to 1856. Surveys in home waters were also important. What Robinson (1962) described as

6572-404: The area held by the British and French became known as the Helles sector or Helles. The French made a diversionary landing at Kum Kale on the Asian shore before re-embarking to hold the eastern area of the Helles sector. The Royal Naval Division simulated landing preparations at Bulair and a New Zealand officer, Bernard Freyberg , swam ashore under fire to light flares to distract the defenders from

6696-504: The assault began at mid-morning on 6 May. The British and French advanced along the Gully, Fir Tree, Krithia and Kereves spurs which were separated by deep gullies, fortified by the Ottomans. As the attackers advanced, they became separated when trying to outflank Ottoman strong points and found themselves in unfamiliar terrain. Under artillery and then machine-gun fire from Ottoman outposts that had not been spotted by British aerial reconnaissance,

6820-416: The attack was stopped; next day, reinforcements resumed the advance. The attack continued on 7 May and four battalions of New Zealanders attacked up Krithia Spur on 8 May; with the 29th Division the attackers managed to reach a position just south of the village. Late in the afternoon, the Australian 2nd Brigade advanced quickly over open ground to the British front line. Amidst small arms and artillery-fire,

6944-421: The attack, of which 3,000 men were killed; Australian and New Zealand casualties were 160 killed and 468 wounded . The dead included a stretcher bearer , John Simpson Kirkpatrick , whose efforts to evacuate wounded men on a donkey while under fire became famous amongst the Australians at Anzac; afterwards, his story became part of the Australian narrative of the campaign. Ottoman losses were so severe that

7068-543: The attackers. The following night, Birdwood ordered the New Zealand and Australian Division to attack from Russell's Top and Quinn's Post towards Baby 700. The Australian 4th Infantry Brigade (Colonel John Monash ), the New Zealand Infantry Brigade and Royal Marines from the Chatham Battalion took part in the attack. Covered by a naval and artillery barrage, the troops advanced a short distance during

7192-474: The beaches and awaited signs of an invasion from his post at Boghali, near Maidos . The Ottomans created Ottoman Aviation Squadrons with German assistance and had four aircraft operating around Çanakkale in February, conducting reconnaissance and army co-operation sorties. From 11 April, an Ottoman aircraft made frequent flights over Mudros, keeping watch on the assembly of the British naval force and an airfield

7316-567: The boat on the seabed until nightfall. At around 9:00 p.m. , AE2 surfaced to recharge batteries and sent a wireless report to the fleet. The landing at Cape Helles was going well but the landing at Anzac Cove was not as successful and the Anzac commander, Lieutenant General Sir William Birdwood, contemplated the re-embarkation of his troops. The success of AE2 was a consideration in Birdwood deciding to persist and reports about AE2 were relayed to

7440-410: The bombardment but only a Short Type 136 , was serviceable. A period of bad weather slowed the attack but by 25 February the outer forts had been reduced and the entrance cleared of mines. Royal Marines were landed to destroy guns at Kum Kale and Seddülbahir, while the naval bombardment shifted to batteries between Kum Kale and Kephez . Frustrated by the mobility of the Ottoman batteries, sited on

7564-460: The brigade charged towards Krithia and gained 600 m (660 yd), about 400 m (440 yd) short of the objective, with 1,000 casualties. Near Fir Tree Spur, the New Zealanders managed to get forward and link up with the Australians, although the British were held up and the French were exhausted, despite having occupied a point overlooking their objective. The attack was suspended and

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7688-496: The canal becoming an established route for the Royal Navy. As well as the "grand surveys" much detailed work was needed. A particular concern was finding isolated rocks. These were easily missed by soundings with lead and line, which did not give any information about the depths between the soundings. In 1887, two ships were lost in the southern Red Sea , fortunately without loss of life, after striking an uncharted reef close to

7812-520: The case. Chart design gradually simplified over the years, with less detail on land, focusing on features visible to the mariner. Contours were increasingly used for hills instead of hatching. All printing of Admiralty charts was carried out in England until the first World War . In 1915, the survey ship HMS Endeavour was sent to support the Gallipoli campaign , and carried printing equipment so that charts from her surveys could be rapidly made available to

7936-1028: The changing nature of the seabed and other charted features, chart information must be up-to-date to maintain accuracy and general safety. This is ensured by UKHO continually assessing hydrographic data for vital safety information, with urgent updates issued via weekly Notices to Mariners (NMs) Gallipoli campaign 5 divisions (initial) 15 divisions (final) Total : 489,000–550,000 Supported by: 6 divisions (initial) 16 divisions (final) Total : 250,000–315,500 British Empire: 198,340 (31,389 killed, 9,708 missing and POW 78,749 wounded 78,494 evacuated sick) France: 9,000 killed & missing 18,000 wounded 20,000 evacuated sick Australia: 8,709 killed 18,500 wounded New Zealand: 3,431 killed 4,140 wounded Total: 300,000 Ottoman Empire: 255,268 (56,643 killed, 97,007 wounded or injured, 11,178 missing or POW, 69,440 evacuated sick, 21,000 died of disease) Total: 255,268 The Gallipoli campaign ,

8060-501: The chart coloration gave a clear indication to users as to whether they were using a chart with depths in fathoms or feet. While depths and heights were in metres, the nautical mile continued to be an international standard. Derived from the length of 1 minute of latitude, it is defined as 1852 metres. Initially, surveys and explorations continued to be commissioned directly by the Admiralty, for example Flinders' circumnavigation of Australia in 1801–3, and Beaufort's survey of

8184-464: The commanding heights of Chunuk Bair and Sari Bair. The right flank of the small lodgement taken by the Australians was driven in at 10:30 a.m., with most of 400 Plateau being lost. During the afternoon and evening, the left flank was pushed back from Baby 700 and the Nek. By evening, Bridges and Godley recommended re-embarkation; Birdwood agreed but, after receiving advice from the navy that re-embarkation

8308-406: The defenders in a perimeter less than 1.2 mi (2 km) long. The Australian submarine HMAS  AE2 (Lieutenant Commander Henry Stoker ) penetrated the Straits on the night of 24/25 April. As landings began at Cape Helles and ANZAC Cove at dawn on 25 April, AE2 reached Chanak by 6:00 a.m. and torpedoed an Ottoman gunboat believed to be a Peyk-i Şevket-class cruiser then evaded

8432-418: The difference becomes important, and charts using the gnomonic projection , on which all great circles are shown as straight lines, are used for course planning. In the past, the gnomonic projection was widely used for navigation charts, and also for polar charts. Since the late 1970s, all charts at a scale of 1:50,000 or larger have used the transverse Mercator projection , which is the projection used for

8556-488: The expedition, especially the First Lord of the Admiralty (1911–1915), Winston Churchill . The campaign was considered a great Ottoman victory . In Turkey, it is regarded as a defining moment in the history of the state, a final surge in the defence of the motherland as the Ottoman Empire retreated. The campaign became the basis for the Turkish War of Independence and the declaration of the Republic of Turkey in 1923, with Mustafa Kemal Atatürk , who rose to prominence as

8680-431: The fleet. In 1938 trials were made with the rotary offset process, using a zinc plate copied from the copper original. These were successful, and by the outbreak of World War II all chart production used this process, which was faster, and reduced wear and tear on the copper original. This development was crucial in meeting the increased wartime demand for charts. During World War II the distribution of printing facilities

8804-409: The follow-up force. The 1st and 2nd Brigades, then the New Zealand and Australian Division, landed on the beaches around Ari Burnu but became entangled, which took time to sort out. About four hours after the landings began, the bulk of the 1st Australian Division was ashore safely and its leading elements were pushing inland. By mid-morning, Kemal had reorganised the defenders for a counter-attack on

8928-457: The following day as they fought their way inland. Five squads of Ottoman infantry led by Sergeant Yahya distinguished themselves by repulsing several attacks on their hilltop position, the defenders eventually disengaging under cover of darkness. After the landings, so few men remained from the Dublin and Munster Fusiliers that they were amalgamated into The Dubsters. Only one Dubliner officer survived

9052-461: The forts were interrupted, some of the guns had been knocked out ... in consequence the artillery fire of the defence had slackened considerably". The Bouvet struck a mine, causing her to capsize in two minutes, with just 75 survivors out of 718 men. Minesweepers, manned by civilians, retreated under Ottoman artillery fire, leaving the minefields largely intact. HMS  Irresistible and HMS  Inflexible struck mines and Irresistible

9176-450: The horses and guard ANZACs "many vehicles and mountains of baggage" . On 19 May, 42,000 Ottoman troops launched an attack at Anzac to push the 17,000 Australians and New Zealanders back into the sea. Short of artillery and ammunition, the Ottomans intended to rely on surprise and weight of numbers but on 18 May, the crews of a flight of British aircraft spotted the Ottoman preparations. The Ottomans suffered c. 13,000 casualties in

9300-442: The initiative of ships' captains. A reluctance to approach the shore later affected the landings at "V" and "W" beach where some of the worst losses among the infantry occurred, while naval gunfire was of some assistance at "S", "X" and ANZAC. Even then its effectiveness was limited by the initial confusion ashore, the broken terrain, thick vegetation and the lack of observation. Kitchener had ruled that air requirements must be met by

9424-477: The instructions of General Otto Liman von Sanders , which evaded the Entente bombardments and threatened the minesweepers sent to clear the Straits, Churchill pressed the naval commander, Admiral Sackville Carden , to increase the fleet's efforts. Carden drew up fresh plans and on 4 March sent a cable to Churchill, stating that the fleet could expect to arrive in Istanbul within 14 days. A sense of impending victory

9548-411: The intense artillery was heard, at around 6:00 a.m. the two remaining battalions of the 27th Infantry Regiment were ordered to make their way to Ariburnu urgently. Sanders had left his HQ and was at Bulair, distracted by the few Entente ships that had appeared; he had been confident that this was where the landings would take place. For two days, he remained at Bulair with the 5th Division waiting for

9672-466: The island of Lemnos in Greece on 12 April, where a small garrison had been established in early March and practice landings were undertaken. The British 29th Division departed for Mudros on 7 April and the Royal Naval Division rehearsed on the island of Skyros , after arriving there on 17 April. That day, the British submarine HMS  E15 tried to run the straits but hit a submarine net, ran aground and

9796-474: The land from every side at the tip of the peninsula. At Gaba Tepe, the short distance to the eastern coast meant that the Entente could easily reach the Narrows, the right-angled bend in the middle of the Dardanelles. Sanders considered Besika Bay on the Asiatic coast to be the most likely invasion site, since the terrain was easier to cross and was convenient to attack the most important Ottoman batteries guarding

9920-483: The landing but inflicted many casualties and contained the attack close to the shore. By the morning of 25 April, out of ammunition and with nothing but bayonets to meet the attackers on the slopes leading up from the beach to the heights of Chunuk Bair, the 57th Infantry Regiment received orders from Kemal: "I do not order you to fight, I order you to die. In the time which passes until we die, other troops and commanders can come forward and take our places". Every man of

10044-419: The landing while, of the 1,012 Dubliners who landed, just 11 survived the Gallipoli campaign unscathed. After the landings, little was done by the Entente to exploit the situation, apart from a few limited advances inland by small groups of men. The Entente attack lost momentum and the Ottomans had time to bring up reinforcements and rally the small number of defending troops. On the afternoon of 27 April,

10168-403: The most indispensable measures to be taken". Roads were constructed, small boats built to carry troops and equipment across the Narrows, beaches were wired and improvised mines were constructed from torpedo warheads. Trenches and gun emplacements were dug along the beaches and troops went on route marches to avoid lethargy. Kemal, whose 19th Division was vital to the defensive scheme, observed

10292-472: The night but got separated in the dark. The attackers came under massed small-arms fire from their exposed left flank and were repulsed, having suffered about 1,000 casualties. On 30 April, the submarine AE2 began to rise uncontrollably and surfaced near the Sultanhisar , then dropped precipitously below the safe diving depth , then broke the surface again at the stern. Sultanhisar immediately fired on

10416-417: The officers involved in the activities. The history was continued to 1917 by Archibald Day, Hydrographer from 1950 to 1955 in his The Admiralty Hydrographic Service from 1795-1919 , explicitly described as a continuation of Dawson's Memoirs . Thomas Henry Tizard published a chronological list of the officers and vessels conducting British maritime discoveries and surveys until 1900. These works are all in

10540-559: The old Seddülbahir fortress, and at "W" Beach , a short distance to the west on the other side of the Helles headland. The covering force of Royal Munster Fusiliers and Hampshires landed from a converted collier, SS  River Clyde , which was run aground beneath the fortress so that the troops could disembark along ramps. The Royal Dublin Fusiliers landed at "V" Beach and the Lancashire Fusiliers at "W" Beach in open boats, on

10664-568: The only hope of success lay in the mobility of the three groups, particularly the 19th Division near Boghali, in general reserve, ready to move to Bulair, Gaba Tepe or the Asiatic shore. The time needed by the British to organise the landings meant that Sanders, Colonel Hans Kannengiesser and other German officers, supported by Esat Pasha ( III Corps ) had more time to prepare their defences. Sanders later noted, "the British allowed us four good weeks of respite for all this work before their great disembarkation ... This respite just sufficed for

10788-526: The opposing trenches separated in places by only a few metres. The Australians lost a number of officers to sniping, including the commander of the 1st Division, Major General William Bridges, who was wounded while inspecting a 1st Light Horse Regiment position near "Steele's Post" and died of his injuries on the hospital ship HMHS  Gascon on 18 May. At the end of April Birdwood told GHQ MEF (General Headquarters Mediterranean Expeditionary Force) that he could not land 6,000 horses at Anzac Cove as there

10912-619: The order they were to disembark, causing a long delay which meant that many troops, including the French at Mudros , were forced to detour to Alexandria to embark on the ships that would take them into battle. A five-week delay until the end of April ensued, during which the Ottomans strengthened their defences on the peninsula, although bad weather during March and April might have delayed the landings anyway, preventing supply and reinforcement. Following preparations in Egypt, Hamilton and his headquarters staff arrived at Mudros on 10 April. The ANZAC Corps departed Egypt in early April and assembled on

11036-605: The public domain. Roger Morris, Hydrographer from 1985 to 1990, published Charts and Surveys in Peace and War 1919-1970 , a further continuation of Memoirs . A less formal account of British Naval Hydrography in the 19th-Century is given by Steve Ritchie , Hydrographer 1966–1971, in The Admiralty Chart . Tony Rice has produced a listing and description of the vessels involved in surveying and oceanographic work from 1800 to 1950. A number of major overseas surveys were completed in

11160-410: The real landing. His absence created problems in chain of command and delays in decision making which negated his defence scheme that relied on rapid movement of troops. At 4:00 a.m. on the morning of 25 April, the first wave of troops from the 3rd Brigade began moving towards the shore on lighters and ships' boats. The covering force landed approximately 1.2 mi (2 km) too far north, in

11284-476: The real landings; Freyberg was later awarded the Distinguished Service Order . Arrangements for naval gunfire support to the landings had originally included bombarding the beaches and approaches but was changed to engagement of the ridges during the landings, with the beaches only to be shelled prior to the landings. No decision was ultimately made on the issue of close support and it was left to

11408-527: The regiment was either killed or wounded. At "W" Beach, thereafter known as Lancashire Landing, the Lancashires were able to overwhelm the defenders despite the loss of 600 casualties from 1,000 men . Six awards of the Victoria Cross were made among the Lancashires at "W" Beach. A further six Victoria Crosses were awarded among the infantry and sailors at the "V" Beach landing and three more were awarded

11532-489: The ridges. There was disagreement as to where the Entente would land and where to concentrate forces. Lieutenant Colonel Mustafa Kemal was familiar with the Gallipoli peninsula from his operations against Bulgaria in the Balkan Wars and forecast that Cape Helles (the southern tip of the peninsula) and Gaba Tepe were the likely areas for landing. Mustafa Kemal believed that the British would use their naval power to command

11656-670: The scientific importance of Darwin's observations and collections, but Captain Robert Fitzroy's surveys of the coast of South America from the River Plate to Ecuador via the Straits of Magellan have been described as a "monumental achievement", and as "opening up the South American continent to European trade". Thomas Graves was working in the Mediterranean from 1836 to 1850. Like a number of surveyors before and since, he explored

11780-489: The smoothed area. This allowed plates to continue in use for long periods, in some cases for over a hundred years. Charts often showed a great deal of detail of features on land as well as sea. Depths were shown by individual soundings while hills and mountains were shown by hatch marks. Printing was in black and white, but some charts were hand-coloured, either to emphasise water depth or terrain, or to indicate specific features such as lighthouses. Experiments were made with

11904-482: The soldiers ashore to improve morale. Stoker was ordered to "generally run amok" and, with no enemies in sight, he sailed into the Sea of Marmara, where AE2 cruised for five days to give the impression of greater numbers and made several attacks against Ottoman ships, which failed because of mechanical problems with the torpedoes. The Helles landing was made by the 29th Division ( Major General Aylmer Hunter-Weston ). The division landed on five beaches in an arc about

12028-478: The southern coast of Turkey (then called Karamania ) in 1811–1812. Under Hurd, the Hydrographic Office became more involved in surveying work, and by 1817 there were three vessels specifically assigned to the surveying service, HMS Protector , HMS  Shamrock , and HMS  Congo . This continued, particularly under Francis Beaufort , Hydrographer from 1829 to 1855. Over the following century

12152-486: The straits; a third of the 5th Army was assembled there. Two divisions were concentrated at Bulair at the north end of the Gallipoli peninsula, to protect supply and communication lines to the defences further down the peninsula. The 19th Division (Kemal) and the 9th Division were placed along the Aegean coast and at Cape Helles on the tip of the peninsula. Sanders kept the bulk of the Ottoman forces inland in reserve, leaving

12276-765: The strong currents. After the failure of the naval attacks, troops were assembled to eliminate the Ottoman mobile artillery, which was preventing the Entente minesweepers from clearing the way for the larger vessels. Kitchener appointed General Sir Ian Hamilton to command the 78,000 men of the Mediterranean Expeditionary Force (MEF). Soldiers from the Australian Imperial Force (AIF) and New Zealand Expeditionary Force (NZEF) were encamped in Egypt , undergoing training prior to being sent to France. The Australian and New Zealand troops were formed into

12400-417: The submarine, puncturing the pressure hull. Stoker ordered the company to abandon ship, scuttled the submarine and the crew was taken prisoner. AE2 ' s achievements showed that it was possible to force the Straits and soon Ottoman communications were badly disrupted by British and French submarine operations. On 27 April, HMS  E14 (Lieutenant Commander Edward Boyle ), entered the Sea of Marmara on

12524-417: The success of AE2 and E14 , the French submarine Joule attempted the passage on 1 May but struck a mine and was lost with all hands. (Several weeks earlier another French boat, Saphir , had been lost after running aground near Nagara Point.) On 5 May, the 42nd (East Lancashire) Division was dispatched from Egypt. Believing Anzac to be secure, Hamilton moved the Australian 2nd Infantry Brigade and

12648-533: The surveying service expanded in both size and reach, becoming a global operation. Several accounts record this history in detail. Llewellyn Styles Dawson was a surveyor particularly noted for his work in China (1865-1870) and a naval assistant in the department for five years (1876-1881). During the latter period he commenced work on the two-volume Memoirs of Hydrography which described the Royal Navy's surveying activities between 1750 and 1885, and presented biographies of

12772-580: The tip of the peninsula and then advance upon the forts at Kilitbahir . The ANZACs, with the 3rd Australian Infantry Brigade spearheading the assault, were to land north of Gaba Tepe on the Aegean coast, from where they could advance across the peninsula, cut off the Ottoman troops in Kilitbahir and stop reinforcements from reaching Cape Helles. This sector of the Gallipoli Peninsula became known as ANZAC;

12896-470: The tip of the peninsula, named "S", "V", "W"', "X" and "Y" Beaches from east to west. On 1 May, the 29th Indian Brigade (including 1/6th Gurkha Rifles ) landed, took and secured Sari Bair above the landing beaches and was joined by 1/5th Gurkha Rifles and 2/10th Gurkha Rifles ; the Zion Mule Corps landed at Helles on 27 April. At "Y" Beach, during the first engagement, the First Battle of Krithia ,

13020-427: The use of lithography from the 1820s, but results were not entirely satisfactory. Lithography was less expensive, and some charts were printed in this way, but printing from copper plates continued to be the main method into the 20th-Century, and in both cases from flat-bed printing machines. The most common chart size was early established as the "Double-elephant" , about 39 X 25.5 inches, and this has continued to be

13144-414: The verge of defeat, began moving troops forward through Wire Gulley, near the 400 Plateau and Lone Pine. Eight battalions of reinforcements were dispatched from Istanbul a day later and that afternoon, Ottoman troops counter-attacked at Helles and Anzac. The Ottomans briefly broke through in the French sector but the attacks were repulsed by massed Entente machine-gun fire, which inflicted many casualties on

13268-525: The world. An important survey in 1870 was the Suez Canal. Britain had remained aloof in the early stages of the project, believing it to be impracticable. When the canal was nearing completion, the question arose as to its suitability for naval ships. George Nares in HMS ; Newport traversed the canal in both directions taking soundings and making measurements, and also surveyed the approaches. This led to

13392-540: The years to 1855, a period dominated by Francis Beaufort , Hydrographer from 1829 to 1855. Owen carried out his survey of East Africa from the Cape of Good Hope to Cape Guardafui on the Horn of Africa in 1822–1825, an operation that cost the lives of more than half of the crew due to tropical illness. The second voyage of the Beagle to South America (1831-6) is mostly famous for

13516-636: Was abandoned because militarily it would have required more resources than France could allocate and politically France did not want the British operating in their sphere of influence, a position to which Britain had agreed in 1912. By late 1914, on the Western Front , the Franco–British counter-offensive of the First Battle of the Marne had ended and the Belgians, British and French had suffered many casualties in

13640-459: Was conceived, the British had planned to conduct an amphibious invasion near Alexandretta on the Mediterranean, an idea originally presented by Boghos Nubar in 1914. This plan was made by the Secretary of State for War , Field Marshal Earl Kitchener , to sever the Ottoman capital from Syria, Palestine and Egypt. Alexandretta was an area with a Christian population and was the strategic centre of

13764-413: Was established near Gallipoli. The Entente planned to land and secure the northern shore, capture the Ottoman forts and artillery batteries for a naval force to advance through the Narrows and the Sea of Marmara towards Istanbul. Scheduled for 23 April but postponed until 25 April due to bad weather, landings were to be made at five beaches on the peninsula. The 29th Division was to land at Helles on

13888-551: Was forced to leave the area but ignorant of this, the Entente withdrew most of their warships to Imbros, where they were "protectively tethered" between sorties, which greatly reduced Entente naval firepower, particularly in the Helles sector. The submarine HMS  E11 (Lieutenant Commander Martin Nasmith , later awarded a Victoria Cross) passed through the Dardanelles on 18 May and sank or disabled eleven ships, including three on 23 May, before entering Constantinople Harbour, firing on

14012-487: Was heightened by the interception of a German wireless message that revealed the Ottoman Dardanelles forts were running out of ammunition. When the message was relayed to Carden, it was agreed the main attack would be launched on or around 17 March. Carden, suffering from stress, was placed on the sick list by the medical officer and command was taken over by Admiral John de Robeck . On the morning of 18 March 1915,

14136-409: Was impossible, Hamilton ordered the troops to dig in instead. The Ottoman counter-attack was eventually repulsed and the Australians established a perimeter roughly from Walker's Ridge in the north to Shell Green in the south. ANZAC casualties on the first day numbered around 2,000 men killed or wounded. The failure to secure the high ground led to a tactical stalemate, with the landings contained by

14260-522: Was no water for them. GHQ MEF was unhappy that the ANZAC force would be immobilised on the beachhead, but they would have been no use. Some of the thousands of men and horses remained on board ship for up to a month. Birdwood signalled on 17 May that 17 transports would be returning to Alexandria to offload 5,251 horses accompanied by 3,217 men. GHQ MEF insisted that some of the men remain in Alexandria to look after

14384-1017: Was not until the development of sideways-looking sonar in the 1960s and 70s that this risk could be eliminated. Most navigation today uses GPS chart plotters with electronic charts. Paper charts continue to be issued, and are valuable for passage planning and course plotting. The scale of the charts can vary according to purpose; large-scale charts often cover approaches to harbours , such as Port Approach Guides, medium-scale charts often cover frequently used coastal areas, and small-scale charts are regularly used for navigation in more open areas. A series of small craft charts are also available at suitable scales. Admiralty charts include information on: depths ( chart datum ), coastline, buoyage, land and underwater contour lines, seabed composition, hazards, tidal information (indicated by " tidal diamonds "), prominent land features, traffic separation schemes radio direction finding (RDF) information, lights, and other information to assist in navigation. Navigation charts at

14508-440: Was on a much larger scale than previously. There was also concern about the safety of the original printing plates in the event of air raids, and high quality baryta paper proofs were made as backups. From the late 1940s, developments in printing technology made colour printing possible with sufficient accuracy for chart work. The first use of printed (as opposed to hand-drawn) colour was in marking of water depths. Solid pale blue

14632-427: Was opposed by Ottoman commanders, including Kemal, who believed that the defenders were too widely dispersed to defeat the invasion on the beaches. Kemal thought Sanders' classic strategy was suitable when there was strategic depth to the front but Gallipoli did not offer that. His commander Esat Passa was not forceful enough in making the objection. Sanders was certain that a rigid system of defence would fail and that

14756-438: Was shelled by a Ottoman fort, killing its commander, Lieutenant Commander Theodore S. Brodie and six of his crew; the survivors were forced to surrender. The Entente fleet and British and French troops assembled at Mudros, ready for the landings but poor weather from 19 March grounded Entente aircraft for nine days and on 24 days only a partial programme of reconnaissance flights was possible. The Ottoman force prepared to repel

14880-432: Was subsequently placed under Hamilton's command. Over the following month, Hamilton prepared his plan and the British and French divisions joined the Australians in Egypt. Hamilton chose to concentrate on the southern part of the Gallipoli peninsula at Cape Helles and Seddülbahir, where an unopposed landing was expected. The Entente initially discounted the fighting ability of the Ottoman soldiers. The naïveté of

15004-435: Was sunk, with most of her crew rescued; Inflexible was badly damaged and withdrawn. There was confusion during the battle about the cause of the damage; some participants blaming torpedoes. HMS  Ocean was sent to rescue Irresistible but was disabled by a shell, struck a mine and was abandoned, eventually sinking. The French battleships Suffren and Gaulois sailed through a new line of mines placed secretly by

15128-460: Was to come ashore and form up to advance across the peninsula. The force was to assemble at night and land at dawn to surprise the defenders and on the evening of 24 April, the covering force embarked on battleships and destroyers, with the follow on forces in on transports. The troops would disembark from the transports into ships' boats and be towed close to the shore by steamboats and then row ashore. At around 2:00 a.m., an Ottoman observer on

15252-455: Was to land and advance inland to cut the lines of communication to the Ottoman forces in the south. The 1st Australian Division would land first, with the 3rd Infantry Brigade leading as a covering force moving inland to establish positions on Gun Ridge. The 2nd Infantry Brigade was to follow and to capture the higher ground on Sari Bair. The 1st Infantry Brigade would land last as the divisional reserve. The New Zealand and Australian Division

15376-422: Was used for water to the 3 fathom line, and a ribbon of blue for six fathoms. Metrication of Admiralty charts began in 1967, and it was decided to synchronise this with the introduction of a new style of chart, with increased use of colour, which continues in use today. The most striking change is the use of buff for land. Green is used for drying (intertidal) areas, and magenta to indicate lights and beacons. Thus

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