- HMS Dreadnought (1906)
Dreadnought at sea; note the torpedo net booms folded against her side
Class overview Name: HMS Dreadnought Operators: Royal Navy Preceded by: Lord Nelson-class Succeeded by: Bellerophon-class Cost: £1,672,483 (excluding armament) Built: 1905–1906 In service: 1906–1919 In commission: 1906–1919 Completed: 1 Scrapped: 1 Career Ordered: 1905 Builder: HM Dockyard, Portsmouth Laid down: 2 October 1905 Launched: 10 February 1906 Commissioned: 2 December 1906 Decommissioned: February 1919 Fate: Scrapped 1923 General characteristics (as completed) Displacement: 18,120 long tons (18,410 t) (normal load)
20,730 long tons (21,060 t) (deep load)
Length: 527 ft (160.6 m) Beam: 82 ft 1 in (25.0 m) Draught: 29 ft 7.5 in (9.0 m) (deep load) Installed power: 23,000 shp (17,000 kW) Propulsion: 4 shafts
Parsons direct drive steam turbines
18 Babcock & Wilcox water-tube boilers
Speed: 21 knots (39 km/h; 24 mph) Range: 6,620 nautical miles (12,260 km; 7,620 mi) at 10 knots (19 km/h; 12 mph) Complement: 700–810 Armament: 5 × 2 BL 12-inch Mark X guns
27 × 1 12-pdr 18 cwt Mark I guns
5 × 18-inch (450 mm) torpedo tubes
Armour: Belt: 4–11 in (102–279 mm)
Deck: 0.75–3 in (19–76 mm)
Barbettes: 4–11 in (102–279 mm)
Turrets: 3–12 in (76–305 mm)
Conning tower: 11 in (279 mm)
Bulkheads: 8 in (203 mm)
HMS Dreadnought was a battleship of the British Royal Navy that revolutionised naval power. Her entry into service in 1906 represented such a marked advance in naval technology that her name came to be associated with an entire generation of battleships, the "dreadnoughts", as well as the class of ships named after her, while the generation of ships she made obsolete became known as "pre-dreadnoughts". She was the sixth ship of that name in the Royal Navy.
Admiral Sir John "Jackie" Fisher, First Sea Lord of the Board of Admiralty, is credited as the father of the Dreadnought. Shortly after he assumed office he ordered design studies for a battleship armed solely with 12-inch (305 mm) guns and a speed of 21 knots (39 km/h; 24 mph). He convened a "Committee on Designs" to evaluate the alternative designs and to assist in the detailed design process. One ancillary benefit of the Committee was that it would shield him, and the Admiralty, from political charges that they had not consulted leading experts before designing such a radically different battleship.
Dreadnought was the first battleship of her era to have a uniform main battery, rather than having a few large guns complemented by a heavy secondary battery of somewhat smaller guns. She was also the first capital ship to be powered by steam turbines, making her the fastest battleship in the world at the time of her completion. Her launch helped spark a major naval arms race as navies around the world, particularly the German Imperial Navy rushed to match her in the build-up to World War I.
Dreadnought did not participate in any of World War I's naval battles as she was refitting during the Battle of Jutland in 1916, the only time that British dreadnought battleships fired on their German counterparts during the war. However, she became the only battleship ever to sink a submarine when she rammed the SM U-29 when it unexpectedly broke the surface after firing a torpedo at another dreadnought in 1915. After Jutland, she was relegated to coast defence duties in the English Channel, only rejoining the Grand Fleet in 1918. She was reduced to reserve in 1919 and sold for scrap on 9 May 1921 for £44,000.
Gunnery developments in the late 1890s and the early 1900s, led in the United Kingdom by Percy Scott and in the United States by William Sims, were already pushing expected battle ranges out to an unprecedented 6,000 yards (5,500 m), a distance far enough to force gunners to wait for the shells to arrive before applying corrections for the next salvo. A related issue was that the shell splashes from the more numerous smaller weapons tended to obscure the splashes from the bigger guns. Either the smaller-calibre guns would have to hold their fire to wait for the slower-firing heavies, losing the advantage of their faster rate of fire, or it would be uncertain whether a splash was due to a heavy or a light gun, making ranging and aiming unreliable. Another issue was that longer-range torpedoes were expected to soon be in service, and these would discourage ships from closing to ranges where the smaller guns' faster rate of fire would become preeminent. Keeping the range open generally negated the threat from torpedoes and further reinforced the need for heavy guns of a uniform calibre.
In 1903, the Italian naval architect Vittorio Cuniberti first articulated in print the concept of an all-big-gun battleship. When the Italian Navy did not pursue his ideas, Cuniberti wrote an article in Jane's Fighting Ships advocating his concept. He proposed an "ideal" future British battleship of 17,000 long tons (17,000 t), with a main battery of a dozen 12 inch guns in eight turrets, 12 inches of belt armour, and a speed of 24 knots (44 km/h; 28 mph).
The Royal Navy (RN), the Imperial Japanese Navy and the United States Navy all recognized these issues before 1905. The RN modified the design of the Lord Nelson-class battleships to include a secondary armament of 9.2-inch (234 mm) that could fight at longer ranges than the 6-inch (152 mm) gun on older ships, but a proposal to arm them solely with 12-inch guns was rejected.[Note 1] The Japanese battleship Satsuma was laid down as an all-big-gun battleship, five months before Dreadnought, although gun shortages only allowed her to be equipped with four of the 12-inch guns that had been planned. The Americans began design work on an all-big-gun battleship around the same time in 1904, but progress was leisurely and the two South Carolina-class battleships were not ordered until March 1906, five months after Dreadnought was laid down, and the month after it was launched. 
The invention by Charles Algernon Parsons of the steam turbine in 1884 led to a significant increase in the speed of ships with his dramatic unauthorised demonstration of Turbinia with her speed of up to 34 knots (63 km/h; 39 mph) at the Queen Victoria's Diamond Jubilee at Spithead in 1897. After further trials of two turbine-powered destroyers, HMS Viper and HMS Cobra, coupled with the positive experiences of several small passenger liners with turbines, Dreadnought was ordered with turbines.
The Battle of the Yellow Sea and Battle of Tsushima were analyzed by Fisher's Committee, with Captain William Pakenham's statement that "12-inch gunfire" by both sides demonstrated hitting power and accuracy, whilst 10-inch shells passed unnoticed. Admiral Fisher wanted his board to confirm, refine, and implement his ideas of a warship that had both speed and guns; 21 knots (39 km/h) and 12-inch guns respectively; pointing out that at the Battle of Tsushima, Admiral Togo had been able to cross the Russian's "T" due to speed. The un-heard of long-range (13,000 metres (14,000 yd)) fire during the Battle of the Yellow Sea, in particular, although never experienced by any navy prior to the battle, seemed to confirm what the RN already believed.
Development of the Dreadnought
Admiral Fisher proposed several designs for battleships with a uniform armament in the early 1900s, and he gathered an unofficial group of advisors to assist him decide on the ideal characteristics in early 1904. After he was appointed First Sea Lord on 21 October 1904, he pushed through the Board of Admiralty a decision to arm the next battleship with 12 inch guns and that it would have a speed no less than 21 knots (39 km/h). In January 1905, he convened a "Committee on Designs", including many members of his informal group, to evaluate the various design proposals and to assist in the detailed design process. While nominally independent it served to deflect criticism of Fisher and the Board of Admiralty as it had no ability to consider options other than those already decided upon by the Admiralty. Fisher appointed all of the members of the committee and he was President of the Committee.
The committee decided on the layout of the main armament, rejecting any superfiring arrangements because of concerns about the effects of muzzle blast on the open sighting hoods on the turret roof below, and chose turbine propulsion over reciprocating engines to save 1,100 long tons (1,100 t) in total displacement on 18 January 1905. Before disbanding on 22 February, it decided on a number of other issues, including the number of shafts (up to six were considered), the size of the anti-torpedo boat armament, and most importantly, to add longitudinal bulkheads to protect the magazines and shell rooms from underwater explosions. This was deemed necessary after the Russian battleship Tsesarevich was thought to have survived a Japanese torpedo hit by virtue of her heavy internal bulkhead during the Russo–Japanese War. To avoid increasing the displacement of the ship, the thickness of her waterline belt was reduced by 1 inch (25 mm).
Dreadnought was significantly larger than her predecessors of the Lord Nelson-class. She had an overall length of 527 feet (160.6 m), a beam of 82 feet 1 inch (25.0 m), and a draught of 29 feet 7.5 inches (9.0 m) at deep load. She displaced 18,120 long tons (18,410 t) at normal load and 20,730 long tons (21,060 t) at deep load, almost 3,000 long tons (3,000 t) more than the earlier ships. She had a metacentric height of 5.6 feet (1.7 m) at deep load and a complete double bottom.
Dreadnought was the first battleship to use steam turbines in place of the older reciprocating triple-expansion steam engines. She had two paired sets of Parsons direct-drive turbines, each of which was housed in a separate engine-room and drove two shafts. The wing shafts were coupled to the high-pressure ahead and astern turbines and the low-pressure turbines to the inner shafts. A cruising turbine was also coupled to each inner shaft, although these were not used often and were eventually disconnected. Her three-bladed propellers were 8 feet 10 inches (2.69 m) in diameter. The turbines were powered by eighteen Babcock and Wilcox water-tube boilers in three boiler rooms. They had a working pressure of 250 psi (1,724 kPa; 18 kgf/cm2). The turbines were designed to produce a total of 23,000 shaft horsepower (17,000 kW), but reached nearly 27,018 shp (20,147 kW) during trials in October 1906. Dreadnought was designed for 21 knots (39 km/h; 24 mph), but reached 21.6 knots (40.0 km/h; 24.9 mph) during trials.
Dreadnought carried 2,868 long tons (2,914 t) of coal, and an additional 1,120 long tons (1,140 t) of fuel oil that was to be sprayed on the coal to increase its burn rate. At full capacity, she could steam for 6,620 nautical miles (12,260 km; 7,620 mi) at a speed of 10 knots (19 km/h; 12 mph).
Dreadnought mounted the 45-calibre BL 12 inch Mark X gun in five twin gun turrets. Three turrets were located conventionally along the centreline of the ship, with the forward turret ('A') and two aft turrets ('X' and 'Y'), the latter pair separated by the torpedo control tower located on a short tripod mast. Two wing turrets ('P' and 'Q') were located port and starboard of the forward superstructure respectively. Dreadnought could deliver a broadside of eight guns between 60° before the beam and 50° abaft the beam. Beyond these limits she could fire six guns aft, and four forward. On bearings 1° ahead or astern she could fire six guns, although she would have inflicted blast damage on the superstructure.
The guns could initially be depressed to −3° and elevated to 13.5°, although the turrets were modified to allow 16° of elevation during World War I. They fired 850-pound (390 kg) projectiles at a muzzle velocity of 2,725 ft/s (831 m/s); at 13.5°, this provided a maximum range of 16,450 m (17,990 yd) with armour-piercing (AP) 2 crh shells. At 16° elevation, the range was extended to 20,435 yd (18,686 m) using the more aerodynamic, but slightly heavier 4 crh AP shells. The rate of fire of these guns was one to two rounds per minute. The ships carried 80 rounds per gun.
The secondary armament consisted of twenty-seven 50-calibre, 3-inch (76 mm) 12-pounder 18 cwt Mark I guns[Note 2] positioned in the superstructure and on turret tops. The guns had a maximum depression of −10° and a maximum elevation of 20°. They fired 12.5-pound (5.7 kg) projectiles at a muzzle velocity of 2,600 ft/s (790 m/s); this gave a maximum range of 9,300 yd (8,500 m). Their rate of fire was 15 rounds per minute. The ship carried three hundred rounds for each gun.
The original plan was to dismount the eight guns on the forecastle and quarterdeck and stow them on chocks on the deck during daylight to prevent them from being damaged by muzzle blast from the main guns. Gun trials in December 1906 proved that this was a bit more difficult than expected and the two port guns from the forecastle and the outer starboard gun from the quarterdeck were transferred to turrets roofs, giving each turret two guns. The remaining forecastle guns and the outer port gun from the quarterdeck were removed by the end of 1907, which reduced the total to twenty-four guns. During her April–May 1915 the two guns from the roof of 'A' turret were reinstalled in the original positions on the starboard side of the quarterdeck. A year later, the two guns at the rear of the superstructure were removed, reducing her to twenty-two guns. Two of the quarterdeck guns were given high-angle Mark IV*C mounts for anti-aircraft duties and the two guns abreast the conning tower were removed in 1917.
A pair of QF 6 pounder Hotchkiss AA guns on high-angle mountings were mounted on the quarterdeck in 1915. They had a maximum depression of 8° and a maximum elevation of 60°. The guns fired a 6-pound (2.7 kg) shell at a muzzle velocity of 1,765 ft/s (538 m/s) at a rate of fire of 20 rounds per minute. They had a maximum ceiling of 10,000 ft (3,000 m), but an effective range of only 1,200 yards (1,100 m). They were replaced by a pair of QF 3 inch 20 cwt guns on high-angle Mark II mounts in 1916. These gun had a maximum depression of 10° and a maximum elevation of 90°. They fired a 12.5-pound (5.7 kg) shell at a muzzle velocity of 2,500 ft/s (760 m/s) at a rate of 12–14 rounds per minute. They had a maximum effective ceiling of 23,500 ft (7,200 m).
Dreadnought carried five 18-inch (450 mm) submerged torpedo tubes in three compartments. Each compartment had two torpedo tubes, one on each broadside, except for the stern compartment which only had one torpedo tube. The forward torpedo room was forward of 'A' turret's magazine and the rear torpedo room was abaft 'Y' turret's magazine. The stern torpedo compartment was shared with the steering gear. Twenty-three Whitehead Mark III* torpedoes were carried between them. In addition six 14-inch (356 mm) torpedoes were carried for her steam picket boats.
Dreadnought was one of the first vessels of the Royal Navy to be fitted with instruments for electrically transmitting range, order and deflection information to the turrets. The control positions for the main armament were located in the spotting top at the head of the foremast and on a platform on the roof of the signal tower. Data from a 9-foot (2.7 m) Barr and Stroud FQ-2 rangefinder located at each control position was input into a Dumaresq mechanical computer and electrically transmitted to Vickers range clocks located in the Transmitting Station located beneath each position on the main deck, where it was converted into range and deflection data for use by the guns. Voice pipes were retained for use between the Transmitting Station and the control positions. The target's data was also graphically recorded on a plotting table to assist the gunnery officer in predicting the movement of the target. The turrets, Transmitting Stations, and control positions could be connected in almost any combination.
Firing trials against HMS Hero (1885) in 1907 revealed this system's vulnerability to gunfire, as its spotting top was hit twice and a large splinter severed the voice pipe and all wiring running along the mast. To guard against this possibility, Dreadnought's fire-control system was comprehensively upgraded during her refits in 1912–13. The rangefinder in the foretop was given a gyro-stabilized Argo mount and 'A' and 'Y' turrets were upgraded to serve as secondary control positions for any portion or all of the main armament. An additional 9-foot (2.7 m) rangefinder was installed on the compass platform. In addition, 'A' turret was fitted with another 9-foot (2.7 m) rangefinder at the rear of the turret roof and a Mark I Dreyer Fire Control Table was installed in the main Transmitting Station. It combined the functions of the Dumaresq and the range clock.
Fire-control technology advanced quickly during the years immediately preceding World War I, and the most important development was the director firing system. This consisted of a fire-control director mounted high in the ship which electrically provided data to the turrets via pointers, which the turret crew were to follow. The director officer fired the guns simultaneously which aided in spotting the shell splashes and minimized the effects of the roll on the dispersion of the shells. A prototype was fitted in Dreadnought in 1909, but it was removed to avoid conflict with her duties as flagship of the Home Fleet. Preparations to install a production director were made during her May–June 1915 refit and every turret received a 9-foot (2.7 m) rangefinder at the same time. The exact date of the installation of the director is not known, other than it was not fitted before the end of 1915, and it was most likely mounted during her April–June 1916 refit.
Dreadnought used Krupp cemented armour throughout, unless otherwise mentioned. Her waterline belt measured 11 inches (279 mm) thick, but tapered to 7 inches (178 mm) at its lower edge. It extended from the rear of 'A' barbette to the center of 'Y' barbette. Oddly, it was reduced to 9 inches (229 mm) abreast 'A' barbette. A 6-inch (152 mm) extension ran from 'A' barbette forward to the bow and a similar 4 inch extension ran aft to the stern. A 8-inch (203 mm) bulkhead angled obliquely inwards from the end of the main belt to the side of 'X' barbette to fully enclose the armoured citadel at middle deck level. An 8 inch belt sat above the main belt, but only ran as high as the main deck. One major problem with Dreadnought's armour scheme was that the top of the 11 inch belt was only 2 feet (0.6 m) above the waterline at normal load and it was submerged by over 12 inches at deep load, which meant that the waterline was protected by the 8 inch upper belt.
The turret faces and sides were protected by 11 inches of Krupp cemented armour, while the turret roofs used 3 inches of Krupp non-cemented armour (KNC). The exposed faces of the barbettes were 11 inches thick, but the inner faces were 8 inches thick above the main deck. 'X' barbette's was 8 inches thick all around. Below the main deck, the barbettes' armour thinned to four inches except for 'A' barbette (eight inches) and 'Y' which remained 11 inches thick. The thickness of the main deck ranged from 0.75 to 1 inch (19 to 25 mm). The middle deck was 1.75 inches (44 mm) thick on the flat and 2.75 inches (70 mm) where it sloped down to meet the bottom edge of the main belt. Over the magazine for 'A' and 'Y' turrets it was 3 inches thick, on slope and flat both. The lower deck armour was 1.5 inches (38 mm) forward and 2 inches aft where it increased to 3 inches to protect the steering gear.
The sides of the conning tower were 11 inches thick and it had a 3 inch roof of KNC. It had a communications tube with 8 inch walls of mild steel down to the Transmitting Station on the middle deck. The walls of the signal tower were 8 inches thick while it had a roof of 3 inches of KNC armour. 2 inch torpedo bulkheads were fitted abreast the magazines and shell rooms of 'A', 'X' and 'Y' turrets, but this increased to 4 inches abreast 'P' and 'Q' turrets to compensate for their outboard location.
In common with all major warships of her day, Dreadnought was fitted with anti-torpedo nets, but these were removed early in the war, since they caused considerable loss of speed and were easily defeated by torpedoes fitted with net-cutters.
Officers were customarily housed aft, but Dreadnought reversed the old arrangement, so that the officers were closer to their action stations. This was very unpopular with the officers, not least because they were now berthed near the noisy auxiliary machinery while the turbines made the rear of the ship much quieter than they had been in earlier steamships. This arrangement lasted among the British dreadnoughts until the King George V class of 1910.
Construction and trials
To meet Admiral Fisher's goal of building Dreadnought in a single year, material was stockpiled in advance and a great deal of prefabrication was done before she was formally laid down on 2 October 1905. In addition, she was built at HM Dockyard, Portsmouth which was regarded as the fastest-building shipyard in the world. Christened with a bottle of Australian wine, Dreadnought was launched by King Edward VII on 10 February 1906, after only four months on the ways. She went to sea on 3 October 1906 for her steam trials, only a year and a day after construction started, although she was not commissioned until 11 December 1906, fifteen months after she was laid down. The suggestion that her building had been sped up by using guns and/or turrets originally designed for the Lord Nelson-class battleships which preceded her is not borne out as the guns and turrets were not ordered until July 1905. It seems more likely that Dreadnought's turrets and guns merely received higher priority than those of the earlier ships.
Dreadnought sailed for the Mediterranean Sea for extensive trials in December 1906 and then to Port of Spain, Trinidad in January 1907. Her engines and guns were given a thorough workout by Captain Reginald Bacon, Fisher's former Naval Assistant and a member of the Committee on Designs. His report stated, "No member of the Committee on Designs dared to hope that all the innovations introduced would have turned out as successfully as had been the case." During this time she averaged 17 knots (31 km/h; 20 mph), slowed only by a damaged rudder, an unprecedented high-speed performance. This shakedown cruise revealed several issues that were dealt with in subsequent refits, notably the replacement of her steering engines and the addition of cooling machinery to reduce the temperature levels in her magazines (cordite degrades more quickly at high temperatures). The most important issue, which was never addressed in her lifetime, was that the placement of her foremast behind the forward funnel put the spotting top right in the plume of hot exhaust gases, much to the detriment of her fighting ability.
From 1907–1911, Dreadnought served as flagship of the Royal Navy's Home Fleet. In 1910, she attracted the attention of notorious hoaxer Horace de Vere Cole, who persuaded the Royal Navy to arrange for a party of Abyssinian royals to be given a tour of a ship. In reality, the "Abyssinian royals" were some of Cole's friends in blackface and disguise, including a young Virginia Woolf and her Bloomsbury Group friends; it became known as the Dreadnought hoax. Cole had picked Dreadnought because she was at that time the most prominent and visible symbol of Britain's naval might. She was replaced as flagship of the Home Fleet by HMS Neptune in March 1911 and was assigned to the 1st Division of the Home Fleet. She participated in King George V's Coronation Fleet Review in June 1911.
Dreadnought became flagship of the 4th Battle Squadron in December 1912 after her transfer from the 1st Battle Squadron, as the 1st Division had been renamed earlier in the year. Between September and December 1913 she was training in the Mediterranean Sea. At the outbreak of World War I in 1914, she was flagship of the 4th Battle Squadron in the North Sea, based at Scapa Flow. She was relieved as flagship on 10 December by HMS Benbow.
Ironically for a vessel designed to engage enemy battleships, her only significant action was the ramming and sinking of German submarine SM U-29, skippered by K/Lt Otto Weddigen (of SM U-9 fame), on 18 March 1915. U-29 had broken the surface immediately ahead of Dreadnought after firing a torpedo at HMS Neptune and Dreadnought cut the submarine in two after a short chase. She almost collided with HMS Temeraire who was also attempting to ram. Dreadnought thus became the only battleship ever to sink a submarine.
She was refitting from 18 April to 22 June 1916 and missed the Battle of Jutland on 31 May, the most significant fleet engagement of the war. Dreadnought became flagship of the 3rd Battle Squadron on 9 July, based at Sheerness on the Thames, part of a force of pre-dreadnoughts intended to counter the threat of shore bombardment by German battlecruisers. During this time she fired her AA guns at German aircraft that passed over her headed for London. She returned to the Grand Fleet in March 1918, resuming her role as flagship of the Fourth Battle Squadron, but was paid off in July to begin another refit. Dreadnought was put into reserve at Rosyth in February 1919. Dreadnought was put up for sale on 31 March 1920 and sold for scrap to T.W. Ward & Company on 9 May 1921 for the sum of £44,000. She was broken up at Ward's new premises at Inverkeithing, Scotland, upon arrival on 2 January 1923.
Her design so thoroughly eclipsed earlier types that subsequent battleships of all nations were generically known as "dreadnoughts" and older battleships disparaged as "pre-dreadnoughts". Her very short construction time was intended to demonstrate that Britain could build an unassailable lead in the new type of battleships. Her construction sparked off a naval arms race, and soon all major fleets were adding Dreadnought-like ships.
- ^ Sturton, pp. 76–77
- ^ a b Gardiner, p. 18
- ^ Brown, pp. 180–82
- ^ Brown, p. 182
- ^ Parkes, p. 451
- ^ Gardiner and Gray, p. 288
- ^ Brown, p. 188
- ^ Brown, pp. 183–84
- ^ Massie, p. 471
- ^ Massie, p. 470
- ^ Massie, p. 474
- ^ Forczyk, p. 50
- ^ Brown, p. 175
- ^ Brown, pp. 186, 189–90
- ^ Roberts, pp. 12, 25
- ^ Brown, pp. 186, 190
- ^ a b c Burt, p. 29
- ^ Roberts, pp. 14, 86–87
- ^ Burt, p. 31
- ^ Roberts, pp. 15–16, 24, 26
- ^ Roberts, p. 25
- ^ a b c d Roberts, p. 28
- ^ "Britain 12"/45 (30.5 cm) Mark X". navweaps.com. 30 January 2009. http://www.navweaps.com/Weapons/WNBR_12-45_mk10.htm. Retrieved 11 November 2009.
- ^ a b Roberts, p. 30
- ^ "Britain 6-pdr / 8cwt (2.244"/40 (57 mm)) QF Marks I and II". navweaps.com. 16 May 2008. http://www.navweaps.com/Weapons/WNBR_6pounder_m1.htm. Retrieved 11 November 2009.
- ^ "British 12-pdr (3"/45 (76.2 cm)) 20cwt QF HA Marks I, II, III and IV". navweaps.com. 27 February 2007. http://www.navweaps.com/Weapons/WNBR_3-45_mk1.htm. Retrieved 11 November 2009.
- ^ Roberts, pp. 30–31
- ^ a b c d e Roberts, p. 31
- ^ Brooks, p. 48
- ^ Archibald, p. 160
- ^ "The Battleships — Part 1". ABC TV. 2002-07-02.
- ^ Roberts, pp. 13, 16
- ^ Gardiner and Gray, pp. 21–22
- ^ Parkes, p. 479
- ^ Roberts 1992, p. 17
- ^ Burt 1986, pp. 32–33
- ^ Roberts 1992, pp. 34
- ^ Burt, p. 34
- ^ Roberts, pp. 18–20
- ^ "The Dreadnought Hoax". Museum of Hoaxes. http://www.museumofhoaxes.com/hoax/archive/permalink/dreadnought_hoax/. Retrieved 18 May 2010.
- ^ Roberts, p. 20
- ^ Roberts, p. 21
- ^ Burt, p. 38
- ^ Sturton, p. 79
- ^ Roberts, pp. 22–23
- ^ Sturton, p. 11
- ^ "Dreadnought Story". Martin Guitar Company. http://www.martinguitar.com/history/dreadnought.php?chptr=2. Retrieved 18 May 2010.
- Archibald, E. H. H. (1984). The Fighting Ship in the Royal Navy, AD 897–1984. Poole, Dorset: Blandford Press. ISBN 0-7137-1348-8.
- Brooks, John (2005). Dreadnought Gunnery and the Battle of Jutland: The Question of Fire Control. Naval Policy and History. 32. Abingdon, Oxfordshire: Routledge. ISBN 0-415-40788-5.
- Brown, David K. (2003). Warrior to Dreadnought: Warship Development 1860–1905 (reprint of the 1997 ed.). London: Caxton Editions. ISBN 1-84067-529-2.
- Burt, R. A. (1986). British Battleships of World War One. Annapolis, MD: Naval Institute Press. ISBN 0-87021-863-8.
- Forczyk, Robert (2009). Russian Battleship vs Japanese Battleship: Yellow Sea 1904–05. Long Island City, NY: Osprey. ISBN 978-1-84603-330-8.
- Gardiner, Robert, ed (1992). The Eclipse of the Big Gun: The Warship, 1906–45. Conway’s History of the Ship. London: Conway Maritime Press. ISBN 0-85177-607-8.
- Gardiner, Robert; Gray, Randal, eds (1984). Conway's All the World's Fighting Ships: 1906–1922. Annapolis, MD: Naval Institute Press. ISBN 0-85177-245-5.
- Massie, Robert, ed (1991). Dreadnought, Britain, Germany, and the Coming of the Great War. New York and Canada: Random House. ISBN 0-394-52833-6.
- Parkes, Oscar (1990). British Battleships (reprint of the 1957 ed.). Annapolis, MD: Naval Institute Press. ISBN 1-55750-075-4.
- Roberts, John (1992). The Battleship Dreadnought. Anatomy of the Ship. Annapolis, MD: Naval Institute Press. ISBN 1-55750-057-6.
- Sturton, Ian, ed (2008). Conway's Battleships: The Definitive Visual Reference to the World's All-Big-Gun Ships (2nd revised and expanded ed.). Annapolis, MD: Naval Institute Press. ISBN 978-1-59114-132-7.
- Sumida, Jon Tetsuro (1993). In Defense of Naval Supremacy: Financial Limitation, Technological Innovation and British Naval Policy, 1889–1914. London: Routledge. ISBN 0-415-08674-4. OCLC 28909592.
- Dreadnought Project Technical material on the weaponry and fire control for the ships
- The Royal Navy's official Dreadnought site
- United States military history page on the Dreadnought
- History, with several period photographs
- An illustration of the contemporary naval arms race which Dreadnought sparked
- A thorough guide to the 12-inch (305 mm) guns which made Dreadnought so distinctive
- Maritimequest HMS Dreadnought Photo Gallery
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