HMS Inflexible (1907)
Encyclopedia
HMS Inflexible was an of the British Royal Navy
Royal Navy
The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

. She was built before World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

 and had an active career during the war. She tried to hunt down the German battlecruiser and the light cruiser
Light cruiser
A light cruiser is a type of small- or medium-sized warship. The term is a shortening of the phrase "light armored cruiser", describing a small ship that carried armor in the same way as an armored cruiser: a protective belt and deck...

  in the Mediterranean Sea
Mediterranean Sea
The Mediterranean Sea is a sea connected to the Atlantic Ocean surrounded by the Mediterranean region and almost completely enclosed by land: on the north by Anatolia and Europe, on the south by North Africa, and on the east by the Levant...

 when war broke out and she and her sister ship
Sister ship
A sister ship is a ship of the same class as, or of virtually identical design to, another ship. Such vessels share a near-identical hull and superstructure layout, similar displacement, and roughly comparable features and equipment...

  sank the German armoured cruisers and during the Battle of the Falkland Islands
Battle of the Falkland Islands
The Battle of the Falkland Islands was a British naval victory over the Imperial German Navy on 8 December 1914 during the First World War in the South Atlantic...

. Inflexible bombarded Turkish
Ottoman Empire
The Ottoman EmpireIt was usually referred to as the "Ottoman Empire", the "Turkish Empire", the "Ottoman Caliphate" or more commonly "Turkey" by its contemporaries...

 forts in the Dardanelles
Dardanelles
The Dardanelles , formerly known as the Hellespont, is a narrow strait in northwestern Turkey connecting the Aegean Sea to the Sea of Marmara. It is one of the Turkish Straits, along with its counterpart the Bosphorus. It is located at approximately...

 in 1915, but was damaged by return fire and struck a mine while maneuvering. She had to be beached to prevent her from sinking, but she was patched up and sent to Malta
Malta
Malta , officially known as the Republic of Malta , is a Southern European country consisting of an archipelago situated in the centre of the Mediterranean, south of Sicily, east of Tunisia and north of Libya, with Gibraltar to the west and Alexandria to the east.Malta covers just over in...

, and then Gibraltar
Gibraltar
Gibraltar is a British overseas territory located on the southern end of the Iberian Peninsula at the entrance of the Mediterranean. A peninsula with an area of , it has a northern border with Andalusia, Spain. The Rock of Gibraltar is the major landmark of the region...

 for more permanent repairs. Transferred to the Grand Fleet afterwards she damaged the German battlecruiser during the Battle of Jutland
Battle of Jutland
The Battle of Jutland was a naval battle between the British Royal Navy's Grand Fleet and the Imperial German Navy's High Seas Fleet during the First World War. The battle was fought on 31 May and 1 June 1916 in the North Sea near Jutland, Denmark. It was the largest naval battle and the only...

 and watched Invincible explode. She was deemed obsolete after the war and was sold for scrap in 1921.

Design

The Invincible class ships were formally known as armoured cruisers until 1911 when they were redesignated as battlecruisers by an Admiralty order of 24 November 1911. Unofficially a number of designations were used until then, including cruiser-battleship, dreadnought cruiser and battle-cruiser.

General characteristics

Inflexible was significantly larger than her armoured cruiser
Armored cruiser
The armored cruiser was a type of warship of the late 19th and early 20th centuries. Like other types of cruiser, the armored cruiser was a long-range, independent warship, capable of defeating any ship apart from a battleship, and fast enough to outrun any battleships it encountered.The first...

 predecessors of the . She had an overall length of 567 ft (172.8 m), a beam
Beam (nautical)
The beam of a ship is its width at the widest point. Generally speaking, the wider the beam of a ship , the more initial stability it has, at expense of reserve stability in the event of a capsize, where more energy is required to right the vessel from its inverted position...

 of 78 foot, and a draught
Draft (hull)
The draft of a ship's hull is the vertical distance between the waterline and the bottom of the hull , with the thickness of the hull included; in the case of not being included the draft outline would be obtained...

 of 29 in 9 in (9.07 m) at deep load. She displaced 17290 long tons (17,567.5 t) at load and 20700 long tons (21,032.2 t) at deep load, nearly 3000 long tons (3,048.2 t) more than the earlier ships.

Propulsion

Inflexible had two paired sets of Parsons direct-drive turbines, each of which was housed in a separate engine-room and drove an outboard and inboard shaft. The high-pressure ahead and astern turbines were coupled to the outboard shafts and the low-pressure turbines to the inner shafts. A cruising turbine was also coupled to each inner shaft; these were not used often and were eventually disconnected. Her three-bladed propellers were 10 in 6 in (3.2 m) in diameter on the inner shafts while the outer propellers were 9 in 6 in (2.9 m) in diameter. The turbines were powered by thirty-one Yarrow
Yarrow Shipbuilders
Yarrow Limited , often styled as simply Yarrows, was a major shipbuilding firm based in the Scotstoun district of Glasgow on the River Clyde...

 water-tube boiler
Water-tube boiler
A water tube boiler is a type of boiler in which water circulates in tubes heated externally by the fire. Fuel is burned inside the furnace, creating hot gas which heats water in the steam-generating tubes...

s in four boiler rooms. The turbines were designed to produce a total of 41000 shp, but reached nearly 47000 shp during her trials in 1908. She was designed for 25 kn (30 mph; 49 km/h), but reached 26.48 kn (32 mph; 52 km/h) during trials. Her sister maintained an average speed of 25.3 knots (50 km/h) for three days during a passage of the North Atlantic
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

 in August 1908.

She carried 3084 long tons (3,133.5 t) of coal, and an additional 725 long tons (736.6 t) of fuel oil
Fuel oil
Fuel oil is a fraction obtained from petroleum distillation, either as a distillate or a residue. Broadly speaking, fuel oil is any liquid petroleum product that is burned in a furnace or boiler for the generation of heat or used in an engine for the generation of power, except oils having a flash...

 that was to be sprayed on the coal to increase its burn rate. At full fuel capacity, she could steam for 3090 nautical miles (5,722.7 km) at a speed of 10 knots (19.6 km/h).

Armament

Inflexible mounted eight BL 12 inches (304.8 mm) Mk X guns
BL 12 inch Mk X naval gun
The BL 12 inch Gun Mark X was a British 45-calibres naval gun which was mounted as primary armament on battleships and battlecruisers from 1906...

 in four twin hydraulically powered turret
Turret
In architecture, a turret is a small tower that projects vertically from the wall of a building such as a medieval castle. Turrets were used to provide a projecting defensive position allowing covering fire to the adjacent wall in the days of military fortification...

s. Her secondary armament consisted of sixteen 4 in (10 cm) QF Mk III guns
QF 4 inch naval gun Mk I - III
The QF 4-inch gun Mks I, II, III were early British QF naval guns originating in 1895. They all had barrels of 40 calibres length.-Naval service:The gun was intended to be a more powerful alternative to the 3-inch QF 12 pounder gun....

. During 1915 the turret roof guns were transferred to the superstructure and the total number of guns was reduced to twelve. All of the remaining guns were enclosed in casemate
Casemate
A casemate, sometimes rendered casement, is a fortified gun emplacement or armored structure from which guns are fired. originally a vaulted chamber in a fortress.-Origin of the term:...

s and given blast shields at that time to better protect the gun crews from weather and enemy action. These guns were replaced by twelve 4-inch BL MK IX
BL 4 inch Mk IX naval gun
The BL 4-inch gun Mk IX was a British medium-velocity naval gun introduced in 1916 as secondary armament on the Renown class battlecruisers and Glorious class "large light cruisers", but which served most notably as the main armament on Flower class corvettes throughout World War II.-History:The...

 guns on CPI mountings during 1917.

Her anti-aircraft
Anti-aircraft warfare
NATO defines air defence as "all measures designed to nullify or reduce the effectiveness of hostile air action." They include ground and air based weapon systems, associated sensor systems, command and control arrangements and passive measures. It may be to protect naval, ground and air forces...

 armament consisted of a single QF 3 inch 20 cwt
QF 3 inch 20 cwt
The QF 3 inch 20 cwt anti-aircraft gun became the standard anti-aircraft gun used in the home defence of the United Kingdom against German airships and bombers and on the Western Front in World War I. It was also common on British warships in World War I and submarines in World War II...

 AA gun on a high-angle MKII mount at the aft end of the superstructure that was carried from July 1915. A 3-pounder Hotchkiss gun
Hotchkiss gun
The Hotchkiss gun can refer to different products of the Hotchkiss arms company starting in the late 19th century. It usually refers to the 1.65-inch light mountain gun; there was also a 3-inch Hotchkiss gun...

 on a high-angle MkIc mounting with a maximum elevation of 60° was fitted in November 1914 and used until August 1917. A 4-inch BL MK VII on a HA MkII mount was added in April 1917. Five 18-inch (450-mm)
British 18 inch torpedo
There have been a number of 18 inch torpedoes in service with the United Kingdom. These have been used on ships of the Royal Navy and aircraft of both the Fleet Air Arm and Royal Air Force...

 submerged torpedo tube
Torpedo tube
A torpedo tube is a device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units installed aboard surface vessels...

s were fitted on the Invincibles, two on each side and one in the stern. Fourteen torpedoes were carried for them.

Armour

The armour protection given to the Invincibles was heavier than that of the Minotaurs—their waterline belt
Belt armor
Belt armor is a layer of heavy metal armor plated on to or within outer hulls of warships, typically on battleships, battlecruisers and cruisers, and on aircraft carriers converted from those types of ships....

 measured 6 inches (152 mm) amidships in contrast to the 4 inches (102 mm) belt of their predecessors. The belt was 6 inches thick roughly between the fore and aft 12-inch gun turrets, but was reduced to four inches from the fore turret to the bow, but did not extend aft of the rear turret. The gun turrets and barbettes were protected by 7 in (178 mm) of armour, except for the turret roofs which used 3 in (76 mm) of Krupp non-cemented armour (KNC). The thickness of the main deck
Deck (ship)
A deck is a permanent covering over a compartment or a hull of a ship. On a boat or ship, the primary deck is the horizontal structure which forms the 'roof' for the hull, which both strengthens the hull and serves as the primary working surface...

 was 1–2 in (25.4–50.8 mm) and the lower deck armour was 1.5–2.5 in (38.1–63.5 mm). Mild steel torpedo bulkhead
Torpedo bulkhead
A torpedo bulkhead is a type of armor common on the more heavily armored warships, especially battleships and battlecruisers of the early 20th century. It is designed to keep the ship afloat even if the hull was struck underneath the belt armor by a shell or by a torpedo...

s of 2.5-inch thickness were fitted abreast the magazines
Magazine (artillery)
Magazine is the name for an item or place within which ammunition is stored. It is taken from the Arabic word "makahazin" meaning "warehouse".-Ammunition storage areas:...

 and shell rooms.

After the Battle of Jutland
Battle of Jutland
The Battle of Jutland was a naval battle between the British Royal Navy's Grand Fleet and the Imperial German Navy's High Seas Fleet during the First World War. The battle was fought on 31 May and 1 June 1916 in the North Sea near Jutland, Denmark. It was the largest naval battle and the only...

 revealed her vulnerability to plunging shellfire, additional armour was added in the area of the magazines and to the turret roofs. The exact thickness is not known, but it was unlikely to be thick as the total amount was less than 100 LT.

Construction

She was authorized in the naval expansion program of 1905, and built at the John Brown & Company
John Brown & Company
John Brown and Company of Clydebank was a pre-eminent Scottish marine engineering and shipbuilding firm, responsible for building many notable and world-famous ships, such as the , the , the , the , the , and the...

 shipyard on the Clyde
Firth of Clyde
The Firth of Clyde forms a large area of coastal water, sheltered from the Atlantic Ocean by the Kintyre peninsula which encloses the outer firth in Argyll and Ayrshire, Scotland. The Kilbrannan Sound is a large arm of the Firth of Clyde, separating the Kintyre Peninsula from the Isle of Arran.At...

. She was laid down on 5 February 1906, launched on 26 June 1907, and commissioned on 20 October 1908.

Early career

Upon commissioning, Inflexible was assigned to the Nore Division of the British Home Fleet. She was the temporary flagship of Admiral of the Fleet Sir Edward Hobart Seymour
Edward Hobart Seymour
Admiral of the Fleet Sir Edward Hobart Seymour, GCB, OM, GCVO , was a Royal Navy officer who became Commander-in-Chief, China Station.- Early life :...

 while in New York for the Hudson-Fulton Celebration
Hudson-Fulton Celebration
The Hudson-Fulton Celebration from September 25 to October 9, 1909 in New York and New Jerseywas an elaborate commemoration of the 300th anniversary of Henry Hudson’s discovery of the Hudson River and the 100th anniversary of Robert Fulton’s first successful commercial application of the paddle...

 in September 1909. On 26 May 1911, she was in a collision with the battleship that damaged her bow. She was refitted in October–November 1911, where her fore funnel was also raised by 6 feet (1.8 m) to reduce smoke interference with the bridge.

Pursuit of Goeben and Breslau

On the outbreak of World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

, Inflexible was flagship of the Mediterranean Fleet. Accompanied by , under the command of Admiral
Admiral
Admiral is the rank, or part of the name of the ranks, of the highest naval officers. It is usually considered a full admiral and above vice admiral and below admiral of the fleet . It is usually abbreviated to "Adm" or "ADM"...

 Sir Archibald Berkeley Milne
Archibald Berkeley Milne
Admiral Sir Berkeley Milne, 2nd Baronet GCVO KCB was a senior Royal Navy officer who commanded the Mediterranean Fleet at the outbreak of the First World War.- Naval career :...

 she encountered the German battlecruiser and the light cruiser on the morning of 4 August 1914 headed east after a cursory bombardment of the French Algerian port of Philippeville, but Britain and Germany were not yet at war so Milne turned to shadow the Germans as they headed back to Messina to recoal. All three battlecruisers had problems with their boilers, but Goeben and Breslau were able to break contact and reached Messina by the morning of the 5th. By this time war had been declared, after the German invasion of Belgium, but an Admiralty order to respect Italian neutrality and stay outside a six-mile (10 km) limit from the Italian coast precluded entrance into the passage of the Strait of Messina
Strait of Messina
The Strait of Messina is the narrow passage between the eastern tip of Sicily and the southern tip of Calabria in the south of Italy. It connects the Tyrrhenian Sea with the Ionian Sea, within the central Mediterranean...

 where they could observe the port directly. Therefore Milne stationed Inflexible and Indefatigable at the northern exit of the Strait of Messina, still expecting the Germans to break out to the west where they could attack French troop transports, the light cruiser at the southern exit and sent Indomitable to recoal at Bizerte
Bizerte
Bizerte or Benzert , is the capital city of Bizerte Governorate in Tunisia and the northernmost city in Africa. It has a population of 230,879 .-History:...

 where she was better positioned to react to a German sortie into the Western Mediterranean.

The Germans sortied from Messina on 6 August and headed east, towards Constantinople
Constantinople
Constantinople was the capital of the Roman, Eastern Roman, Byzantine, Latin, and Ottoman Empires. Throughout most of the Middle Ages, Constantinople was Europe's largest and wealthiest city.-Names:...

, trailed by Gloucester. Milne, still expecting Rear Admiral
Rear Admiral
Rear admiral is a naval commissioned officer rank above that of a commodore and captain, and below that of a vice admiral. It is generally regarded as the lowest of the "admiral" ranks, which are also sometimes referred to as "flag officers" or "flag ranks"...

 Wilhelm Souchon
Wilhelm Souchon
Wilhelm Anton Souchon was a German and Ottoman admiral in World War I who commanded the Kaiserliche Marine's Mediterranean squadron in the early days of the war...

 to turn west, kept the battlecruisers at Malta until shortly after midnight on 8 August when he set sail for Cape Matapan
Cape Matapan
Cape Tainaron , also known as Cape Matapan , is situated at the end of the Mani, Laconia, Greece. Cape Matapan is the southernmost point of mainland Greece. It separates the Messenian Gulf in the west from the Laconian Gulf in the east.-History:...

 at a leisurely 12 knots (24 km/h), where Goeben had been spotted eight hours earlier. At 2:30 p.m. he received an incorrect signal from the Admiralty stating that Britain was at war with Austria — war would not be declared until 12 August and the order was countermanded four hours later, but Milne followed his standing orders to guard the Adriatic against an Austrian breakout attempt, rather than seek Goeben. Finally on 9 August Milne was given clear orders to "chase Goeben which had passed Cape Matapan on the 7th steering north-east." Milne still did not believe that Souchon was heading for the Dardanelles, and so he resolved to guard the exit from the Aegean
Aegean Sea
The Aegean Sea[p] is an elongated embayment of the Mediterranean Sea located between the southern Balkan and Anatolian peninsulas, i.e., between the mainlands of Greece and Turkey. In the north, it is connected to the Marmara Sea and Black Sea by the Dardanelles and Bosporus...

, unaware that the Goeben did not intend to come out. Indomitable remained in the Mediterranean to blockade the Dardanelles
Dardanelles
The Dardanelles , formerly known as the Hellespont, is a narrow strait in northwestern Turkey connecting the Aegean Sea to the Sea of Marmara. It is one of the Turkish Straits, along with its counterpart the Bosphorus. It is located at approximately...

, but Inflexible was ordered home on 18 August.

Battle of the Falklands

The West Indies Squadron of Rear Admiral Christopher Cradock
Christopher Cradock
Rear-Admiral Sir Christopher "Kit" George Francis Maurice Cradock KCVO CB was a British officer of the Royal Navy. He was born at Hartforth, Richmond, North Yorkshire...

 was destroyed by the German German East Asia Squadron
German East Asia Squadron
The German East Asia Squadron was a German Navy cruiser squadron which operated mainly in the Pacific Ocean between the 1870s and 1914...

 commanded by Admiral Graf von Spee
Maximilian von Spee
Vice Admiral Maximilian Reichsgraf von Spee was a German admiral. Although he was born in Copenhagen, Denmark, the counts von Spee belonged to the prominent families of the Rhenish nobility. He joined the Kaiserliche Marine in 1878. In 1887–88 he commanded the Kamerun ports, in German West...

 during the Battle of Coronel
Battle of Coronel
The First World War naval Battle of Coronel took place on 1 November 1914 off the coast of central Chile near the city of Coronel. German Kaiserliche Marine forces led by Vice-Admiral Graf Maximilian von Spee met and defeated a Royal Navy squadron commanded by Rear-Admiral Sir Christopher...

 on 1 November 1914. In response, the Admiralty
Admiralty
The Admiralty was formerly the authority in the Kingdom of England, and later in the United Kingdom, responsible for the command of the Royal Navy...

 ordered that a squadron be sent to destroy the Germans. The squadron, under the command of Admiral Sir Doveton Sturdee
Doveton Sturdee
Admiral of the Fleet Sir Frederick Charles Doveton Sturdee, 1st Baronet, GCB, KCMG, CVO was a British admiral.-Naval career:...

, consisted of Invincible (flag) and Inflexible. They departed on 11 November and rendezvoused with several other cruisers under Rear Admiral Stoddard at Abrolhos Rocks
Abrolhos Marine National Park
The Abrolhos Marine National Park is a Marine Park located in the Abrolhos Archipelago since 1983.The Abrolhos are an archipelago of 5 islands with coral reefs off the southern coast of Bahia state in the northeast of Brazil, between 17º25’—18º09’ S and 38º33’—39º05’ W.-External links:***...

, off the coast of Brazil
Brazil
Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

 on the 26th. They departed the following day and reached Port Stanley
Stanley, Falkland Islands
Stanley is the capital and only true cityin the Falkland Islands. It is located on the isle of East Falkland, on a north-facing slope in one of the wettest parts of the islands. At the 2006 census, the city had a population of 2,115...

 on the morning of 7 December.

Spee, making a leisurely voyage back to the Atlantic, wished to destroy the radio station at Port Stanley and sent the armoured cruiser and the light cruiser to see if the harbor was clear of British warships on the morning of 8 December. They were spotted at 7:30 AM, although the pre-dreadnought , grounded in Stanley Harbor to defend the town and its wireless station, did not receive the signal until 7:45. It mattered little because Sturdee was not expecting an engagement and most of his ships were coaling. Furthermore the armoured cruiser and the light cruiser had one or both of their engines under repair. The armed merchant cruiser Macedonian was patrolling the outer harbor entrance while the armoured cruiser was anchored in the outer harbor, scheduled to relieve the Macedonian at 8:00 AM. The Germans were not expecting any resistance and the first salvo from Canopuss guns at 9:20 caused them to sheer off from their planned bombardment of the wireless station and fall back on Spee's main body.

Sturdee's ships did not sortie from the harbor until 9:50, but they could see the retreating German ships on the southwest horizon. The Invincibles, fresh out of dry dock, had a 5 kn (6.1 mph; 9.8 km/h) advantage over Spee's ships which all had fouled bottoms that limited their speeds to 20 kn (24.4 mph; 39.2 km/h) at best. The light cruiser was lagging behind the other ships and Inflexible opened fire on her when the range dropped to 17500 yards (16 km) at 12:55 PM. Invincible opened fire shortly afterwards and both ships began straddling Leipzig as the range closed to 13000 yards (11.9 km). At 1:20 Spee ordered his squadron to separate and ordered his light cruisers to turn to the southwest while his armoured cruisers turned to the north east to cover their retreat. The German ships opened fire first at 1:30 and scored their first hit at 1:44 when hit Invincible, although the shell burst harmlessly on the belt armour. Both sides fired rapidly during the first half-hour of the engagement before Sturdee opened up the range a little to put his ships outside of the effective range of the German guns. British gunnery was very poor during this period, scoring only four hits out of 210 rounds fired. The primary cause was the smoke from the guns and funnels as the British were downwind of the Germans.

Spee turned to the south in the hope of disengaging while the British had their vision obscured, but only opened the range to 17000 yards (15.5 km) before the British saw his course change. This was futile as the British battlecruisers gave chase at 24 kn (29.2 mph; 47 km/h). Forty minutes later the British opened fire again at 15000 yards (13.7 km). Eight minutes later Spee turned again to the east to give battle. This time his strategy was to close the range on the British ships so he could bring his 15 cm (5.9 in) secondary armament into play. In this he was successful and they were able to open fire at 3:00 at maximum elevation. On this course the smoke bothered both sides, but multiple hits were made regardless. Those made by the Germans either failed to detonate or hit in some insignificant area. On the contrary, Geneisenau had her starboard engine room put out of action. Sturdee ordered his ships at 3:15 back across their own wakes to gain the windward advantage. Spee turned to the northwest, as if to attempt to cross the British T
Crossing the T
Crossing the T or Capping the T is a classic naval warfare tactic attempted from the late 19th to mid 20th century, in which a line of warships crossed in front of a line of enemy ships, allowing the crossing line to bring all their guns to bear while receiving fire from only the forward guns of...

, but actually to bring Scharnhorsts undamaged starboard guns to bear as most of those on his port side were out of action. The British continued to hit Scharnhorst and Gneisenau regularly during this time and Scharnhorst ceased fire at 4:00 before capsizing at 4:17 with no survivors. Gneisenau had been slowed by earlier damage and was battered for another hour and a half by Inflexible and Invincible at ranges down to 4000 yards (3.7 km). Despite the damage her crew continued to fire back until she ceased firing at 4:47. Sturdee was ready to order 'Cease fire' at 5:15 when an ammunition hoist was freed up and she made her last shot. The British continued to pound her until 5:50, after her captain had given the order to scuttle her at 5:40. She slowly capsized at 6:00 and the British were able to rescue 176 men. She had fired 661 12-inch shells during the battle and had only been hit three times because she was often obscured by Invincibles smoke. Only one man was killed and five wounded aboard the battlecruisers during the battle.

Dardanelles Campaign

After the Battle of the Falklands Inflexible was repaired and refitted at Gibraltar
Gibraltar
Gibraltar is a British overseas territory located on the southern end of the Iberian Peninsula at the entrance of the Mediterranean. A peninsula with an area of , it has a northern border with Andalusia, Spain. The Rock of Gibraltar is the major landmark of the region...

. She arrived at the Dardanelles on 24 January 1915 where she replaced Indefatigable as the flagship of the Mediterranean Fleet. She bombarded Turkish fortifications on 19 February, the start of the Battle of Gallipoli
Battle of Gallipoli
The Gallipoli Campaign, also known as the Dardanelles Campaign or the Battle of Gallipoli, took place at the peninsula of Gallipoli in the Ottoman Empire between 25 April 1915 and 9 January 1916, during the First World War...

, to little effect, and again on 15 March, with the same results. She was part of the first line of British ships on 18 March as they attempted to suppress the Turkish guns so the minefields could be swept. Turkish return fire was heavy and she was hit a number of times. A 15 cm (5.9 in) howitzer
Howitzer
A howitzer is a type of artillery piece characterized by a relatively short barrel and the use of comparatively small propellant charges to propel projectiles at relatively high trajectories, with a steep angle of descent...

 shell knocked out the left gun of 'P' turret, a 105 mm (4.1 in) shell hit the yard
Yard (sailing)
A yard is a spar on a mast from which sails are set. It may be constructed of timber, steel, or from more modern materials, like aluminium or carbon fibre. Although some types of fore and aft rigs have yards , the term is usually used to describe the horizontal spars used with square sails...

 above the foretop and killed or wounded everybody within. A heavy shell of unknown size hit her on the port side 6 feet (1.8 m) below the waterline, but only dished in the side plating. A 240 mm (9.4 in) shell hit the foremast at the same level as the flying bridge
Flying bridge
A flying bridge is a area on top of, or at the side of, a ship's pilothouse, or closed bridge, that serves as an operating station for the ship's officers in good weather or when maneuvering in port, where good views along the ship sides are important...

 and set fire to the navigator's sea cabin. The hit destroyed all the cables and voice pipes running through the foremast to the fire control director. The smoke from the fire was choking the wounded so she withdrew to turn her head to into the wind and the fire was then quickly put out. She returned to reengage the Turkish forts and was hit once more with little effect. Later, as she was turning in Eren Keui Bay, she was seriously damaged by a mine, probably about 100 kg (220.5 lb) in size, that blew a large hole in her starboard bow and flooded the forward torpedo flat, drowning 39 men. She had to be beached at the island of Bozcaada (Tenedos
Tenedos
Tenedos or Bozcaada or Bozdja-Ada is a small island in the Aegean Sea, part of the Bozcaada district of Çanakkale province in Turkey. , Tenedos has a population of about 2,354. The main industries are tourism, wine production and fishing...

) to prevent her sinking, as she'd taken in some 1600 LT of water, but she was temporarily repaired with a cofferdam
Cofferdam
A cofferdam is a temporary enclosure built within, or in pairs across, a body of water and constructed to allow the enclosed area to be pumped out, creating a dry work environment for the major work to proceed...

 over the 30 by 26 ft (9.1 by 7.9 m) hole. She sailed to Malta, escorted by and on 6 April. She nearly foundered when her cofferdam worked loose in heavy weather en route and had to be towed stern-first by Canopus for six hours while the cofferdam was repaired. She was under repair at Malta until early June before she sailed for home. She reached the U.K.
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 on 19 June where she joined the 3rd Battlecruiser Squadron
3rd Battlecruiser Squadron (United Kingdom)
The 3rd Battlecruiser Squadron was a short-lived Royal Navy squadron of battlecruisers that saw service as part of the Grand Fleet during the First World War.-Creation:...

 (BCS) of the Grand Fleet under the command of Rear Admiral H.L.A. Hood.

Battle of Jutland

At the end of May 1916, the 3rd BCS was temporarily assigned to the Grand Fleet for gunnery practice. On 30 May, the entire Grand Fleet, along with Admiral Beatty's battlecruisers, was ordered to sea to prepare for an excursion by the German High Seas Fleet
High Seas Fleet
The High Seas Fleet was the battle fleet of the German Empire and saw action during World War I. The formation was created in February 1907, when the Home Fleet was renamed as the High Seas Fleet. Admiral Alfred von Tirpitz was the architect of the fleet; he envisioned a force powerful enough to...

. In order to support Beatty, Admiral Hood took his three battlecruisers ahead of the Grand Fleet. At about 2:30 PMThe times used in this section are in UTC
Coordinated Universal Time
Coordinated Universal Time is the primary time standard by which the world regulates clocks and time. It is one of several closely related successors to Greenwich Mean Time. Computer servers, online services and other entities that rely on having a universally accepted time use UTC for that purpose...

, which is one hour behind CET
Central European Time
Central European Time , used in most parts of the European Union, is a standard time that is 1 hour ahead of Coordinated Universal Time . The time offset from UTC can be written as +01:00...

, which is often used in German works.
Invincible intercepted a radio message from the British light cruiser , attached to Beatty's Battlecruiser Force, reporting the sighting of two enemy cruisers. This was amplified by other reports of seven enemy ships steering north. Hood interpreted this as an attempt to escape through the Skagerrak
Skagerrak
The Skagerrak is a strait running between Norway and the southwest coast of Sweden and the Jutland peninsula of Denmark, connecting the North Sea and the Kattegat sea area, which leads to the Baltic Sea.-Name:...

 and ordered an increase in speed to 22 knots (43.1 km/h) at 3:11 and steered East-Southeast to cut off the fleeing ships. Twenty minutes later Invincible intercepted a message from Beatty reporting five enemy battlecruisers in sight and later signals reporting that he was engaging the enemy on a south-easterly course. At 4:06 Hood ordered full speed and a course of south-southeast in an attempt to converge on Beatty. At 4:56, with no British ships in sight, Hood requested Beatty's course, position and speed, but never received a reply.

Hood continued on course until 5:40 when gunfire was spotted in the direction to which his light cruiser had been dispatched to investigate other gunfire flashes. Chester encountered four light cruisers of Hipper's 2nd Scouting Group and was badly damaged before Hood turned to investigate and was able to drive the German cruisers away. At 5:53 Invincible opened fire on and the other two Invincibles followed two minutes later. The German ships turned for the south after fruitlessly firing torpedoes at 6:00 and attempted to find shelter in the mist. As they turned Invincible hit Wiesbaden in the engine room and knocked out her engines while Inflexible hit once. The 2nd Scouting Group was escorted by the light cruiser and 31 destroyers of the 2nd and 9th Flotillas and the 12th Half-Flotilla which attacked the 3rd BCS in succession. They were driven off by Hood's remaining light cruiser and the five destroyers of his escort. In a confused action the Germans only launched 12 torpedoes and disabled the destroyer with gunfire. Having turned due west to close on Beatty's ships, the Invincibles were broadside to the oncoming torpedoes, but Invincible turned north, while Inflexible and Indomitable turned south to present their narrowest profile to the torpedoes. All the torpedoes missed, although one passed underneath Inflexible without detonating. As Invincible turned north, her helm jammed and she had to come to a stop to fix the problem, but this was quickly done and the squadron reformed heading west.

At 6:21, with both Beatty and the Grand Fleet converging on him, Hood turned south to lead Beatty's battlecruisers. Hipper's battlecruisers were 9000 yards (8.2 km) away and the Invincibles almost immediately opened fire on Hipper's flagship, , and . Lützow quickly took 10 hits from , Inflexible and Invincible, including two hits below the waterline forward by Invincible that would ultimately doom her. But at 6:30, Invincible abruptly appeared as a clear target before Lützow and Derfflinger. The two German ships then fired three salvoes each at Invincible, and sank her in 90 seconds. A 305 mm (12-inch) shell from the third salvo struck the roof of Invincibles midships 'Q' turret, flash detonated the magazine
Magazine (artillery)
Magazine is the name for an item or place within which ammunition is stored. It is taken from the Arabic word "makahazin" meaning "warehouse".-Ammunition storage areas:...

s below, and the ship blew up and broke in two, killing all but six of her crew of 1,032 officers and men, including Rear-Admiral Hood.

Inflexible and Indomitable remained in company with Beatty for the rest of the battle. They encountered Hipper's battlecruisers only 10000 yards (9.1 km) away as the sun was setting about 8:19 and opened fire. Seydlitz was hit five times before the German battlecruisers were rescued by the appearance of the pre-dreadnought battleships of Rear Admiral Mauve and the British shifted fire to the new threat. Three of the predreadnoughts were hit before they too were able to turn into the gloom.

Post-Jutland career

The loss of three battlecruisers at Jutland (the others were and ) led to the force being reorganised into two squadrons, with Inflexible and Indomitable in the 2nd BCS. However, after Jutland there was little significant naval activity for the Invincibles, other than routine patrolling, thanks to the Kaiser's order that his ships should not be allowed to go to sea unless assured of victory. Two torpedoes fired by the German submarine during one of these patrols on 19 August 1916 missed astern. On 1 February 1918 she collided with the British submarine K22
HMS K13
HMS K13 was a steam-propelled First World War K class submarine of the British Royal Navy. She sank in a fatal accident during sea trials in early 1917 and was salvaged and recommissioned as HMS K22....

 off the Isle of May
Isle of May
The Isle of May is located in the north of the outer Firth of Forth, approximately off the coast of mainland Scotland. It is 1.8 km long and less than half a kilometre wide...

 with minor damage. She was fitted with two flying off ramps fitted above her midships turrets in early 1918. On 21 November she was present at Scapa Flow
Scapa Flow
right|thumb|Scapa Flow viewed from its eastern endScapa Flow is a body of water in the Orkney Islands, Scotland, United Kingdom, sheltered by the islands of Mainland, Graemsay, Burray, South Ronaldsay and Hoy. It is about...

 for the surrender of the German High Seas Fleet.

The end of the war saw the end for many of the older vessels, not least the two remaining Invincible class ships. Inflexible was paid off to the Reserve Fleet in January 1919 before being decommissioned on 31 March 1920. Chile briefly considered purchasing the ship in 1920, however the sale did not materialise. She was sold for scrap on 1 December 1921, and scrapped in Germany the following year. Mount Inflexible in the Canadian Rockies
Canadian Rockies
The Canadian Rockies comprise the Canadian segment of the North American Rocky Mountains range. They are the eastern part of the Canadian Cordillera, extending from the Interior Plains of Alberta to the Rocky Mountain Trench of British Columbia. The southern end borders Idaho and Montana of the USA...

was named after the battlecruiser in 1917.

External links

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