The Bristol class were all ordered under the 1908–09 Programme and commissioned in late 1910.[1] They were second class cruisers suitable for a variety of roles including both trade protection and fleet duties.[2] They were 453feet long overall, with a beam of 47feet and a draught of 15feet. Displacement was 4800LT normal and 5300LT full load. Twelve Yarrow three-drum boilers fed steam turbines rated at 22000shp, giving a speed of 25kn. One ship, Bristol, had Brown-Curtis turbines driving two propeller shafts, while the remaining three ships used Parsons turbines driving four shafts.[2] Speed during sea trials varied between (Glasgow) and (Bristol).[3] The experimental two-shaft layout of Bristol was successful, giving greater efficiency, especially at lower speeds.[4] The ships used both coal and oil for fuel, with 1353 tons of coal and 260 tons of oil carried,[5] giving an endurance of about 5070nmi at .[2]
The Bristols were protected cruisers, with an armoured deck providing protection for the ships' vitals. The armoured deck was 2inches thick over the magazines and machinery, 1inches over the steering gear and NaNinches elsewhere. The conning tower was protected by 6inches of armour, with the gun shields having 3inches armour, as did the ammunition hoists.[4] As the protective deck was at waterline, the ships were given a large metacentric height so that they would remain stable in the event of flooding above the armoured deck. This, however, resulted in the ships rolling badly, making them poor gun platforms.[6] One problem with the armour of the Bristols which was shared with the other Town-class ships was the sizable gap between the bottom of the gun shields and the deck, which allowed shell splinters to pass through the gap, leading to large numbers of leg injuries in the ships' gun crews.[7] [8]
It was originally intended that the Bristol class would be fitted with a main gun armament of unshielded 40NaN0 guns, but the need to counter German light cruisers (such as the), which were armed with ten 105mm guns that outranged British 4-inch guns, resulted in the new class's armament being revised.[2] [6] They had two BL 6-inch (152 mm) Mk XI naval guns mounted on the ships' centreline fore and aft, with ten BL 4-inch Mk VII guns in waist mountings. All these guns were fitted with shields.[2] Four Vickers 3-pounder (47 mm) saluting guns were fitted, while two submerged 18 inch (450 mm) torpedo tubes were fitted, with seven torpedoes carried.[9] This armament was considered rather too light for ships of this size,[10] while the waist guns were subject to immersion in a high sea, making them difficult to work.[6]
They had a crew of 480 officers and men,[2] with the officers accommodated in the forward part of the ship, rather than aft as per tradition, following the instructions of Admiral Fisher to improve fighting efficiency. This arrangement was unpopular, however, as it was preferred to keep officer's and other ranks accommodation separate for disciplinary reasons, while the Bristol class were very cramped, with only 12.5square feet for each seaman to live, eat, and sleep.[6] [11] [12] In the First World War, the class's anti-aircraft armament was increased with the fitting of a single QF 3 inch (76 mm) 20 cwt gun.[2]
The Weymouth class were ordered under the 1909–1910 Programme and commissioned between 1911 and 1912.[1] Major changes from the Bristol class included a heavier main armament of eight 6 in guns, and changes to improve seaworthiness and reduce overcrowding.[10] They were 453feet long overall, with a beam of 48inchesft6inchesin (ftin) and a draught of 15feet. Displacement was 5250LT normal and 5800LT full load. Machinery was similar to the Bristol class, with again a single example (Yarmouth) having the Brown-Curtis turbines and two-shaft arrangement used in Bristol, while the remaining three ships had the four-shaft, Yarrow turbine machinery. Speed remained 25 knots.[13]
Armour remained unchanged from the Bristols,[14] while the main gun armament was changed to eight BL 6 inch Mk XI guns. The arrangement of the armament was revised, with three guns (one on the centreline and two on the beam) on an enlarged forecastle that also provided accommodation for the ships' officers. The remaining waist guns were protected by a bulwark to make them more weather resistant. Torpedo armament was increased, with two 21-inch (533 mm) submerged tubes (with seven torpedoes carried), while the ships' armament was completed by four 3-pounder saluting guns.[13] [9]
The class saw a number of alterations during the war, including the addition of a single 3 in (76 mm) AA gun in 1915, while the surviving ships were fitted with director control equipment for the ships' guns on a new tripod foremast.[13] In 1917, Yarmouth was the first light cruiser to be able to operate aircraft, being fitted with a ramp above the conning tower and forecastle gun to allow a Sopwith Pup to be launched from the ship, although the aircraft could not land back on it so the pilot would have to ditch into the sea if it was not possible to reach land.[15] [11] In 1918, Weymouth also received a similar installation.[13]
The Chatham class of six ships, three for the Royal Navy and three for Australia (of which one was to be built in Australia) were ordered under the 1910–1911 Programme. The five British-built ships commissioned between 1912 and 1913, while Brisbane, the Australian-built ship was laid down in 1913 and completed in 1916.[1] The major difference between the Chathams and the earlier Towns was a revised armour scheme. While the earlier ships were protected cruisers, depending on an armoured deck deep within the ship to protect machinery and magazines, the Chathams relied on a vertical belt of armour.[16]
The Chatham class were 458feet long overall, with a beam of 49feet and a draught of 16feet. Displacement was 5400LT normal and 6000LT full load.[16] The belt consisted of 2inches of nickel-steel on top of 1inches of high-tensile steel, tapering from 3- forward and to 2inches aft. It covered from 8.25feet-10.5feetft (-ft) above the waterline to 2.5feet below it. This belt was part of the load bearing structure of the ship, reducing the overall weight of structure required. A thin armoured deck, NaNinches over most of its length and NaNinches over the steering gear, was retained, mainly as a watertight deck.[4] The ships' forecastle was again extended aft, reaching two-thirds of the length of the ship, and allowing two more guns to be raised up onto the forecastle, while the ships' metacentric height was reduced, making the ships better gun platforms.[17] Officer's accommodation was moved back to the rear of the ships in this class.[11] Machinery layout was again similar to the earlier Towns, with one ship, Southampton, having a two-shaft layout. It was rated at 25000shp giving a speed of .[16] While main armament again consisted of eight 6 in guns in single mountings, a new gun, the BL 6 inch Mk XII was used. This was shorter and lighter than the Mk XI guns used in earlier ships, and while range was slightly less (14000yd compared to 14600yd[3]), they were much easier to handle in rough weather and were more accurate.[16] [17] They had larger magazines, giving up to 200 rounds per gun rather than 150 in earlier ships.[7] The remaining armament was unchanged.[16]
Wartime changes were similar to those made to the Weymouths, with a 3-inch anti-aircraft gun fitted during 1915 and director control with its associated tripod mast fitted later in the war. Four of the ships (Dublin, Southampton, Melbourne and Sydney) were fitted for platforms for operating aircraft.[18]
The 1911–1912 Programme brought the Birmingham class. Three ships were ordered for the Royal Navy, commissioning in 1914.[1] A fourth, similar, ship, Adelaide, was built in Sydney for Australia. The First World War caused the construction of Adelaide, which was reliant on materials and parts from the United Kingdom, to be heavily delayed, with Adelaide not completing until 1922.[19] They were closely based on the Chatham class but with a revised armament. While in theory, three guns could fire forwards in the previous arrangement (the forward centreline gun and the forward two waist guns), in practice the effects of blast from the waist guns on the bridge and conning tower prevented this. The solution was to mount two guns side-by side on the forecastle, forward of the bridge, giving a total armament of nine BL 6 inch Mk XII guns. The remainder of the armament was unchanged (i.e. four 3-pounder saluting guns and two submerged 21-inch torpedo tubes).[7] [18]
The ships were 457feet long overall (Adelaide was 462inchesft9inchesin (ftin) long), with a beam of 50feet and a draught of 16feet. They displaced 5440LT normal and 6040LT deep load (Adelaide displaced 5550LT normal and 6160LT deep load). The ships' forecastle had increased flare to reduce spray.[18] The ships' machinery was rated at 25000shp giving a speed of .[18]
A 3-inch anti-aircraft gun was fitted in 1915, while Lowestoft and Birmingham were fitted with director control. (Nottingham was lost before it could be fitted).[18] Adelaide was completed with these modifications, and received a major refit in the 1930s, with coal-fired boilers being removed along with a funnel, reducing the ship's speed, while one 6-inch was removed, with 4-inch anti-aircraft guns added. She was subject to further armament revisions during the Second World War, with more 6- and 4-inch guns removed to accommodate depth charge throwers, and radar being fitted.[19]
See main article: Hawkins-class cruiser. In 1912, work began on a new cruiser for trade protection duties in response to rumours of large German cruisers that were thought to being built for commerce raiding. A series of designs were drawn up for what became known as the "Atlantic cruiser", featuring various combinations of 7.5-inch (190 mm) and 6-inch guns, mixed oil- and coal-fired boilers and speeds of between and . When the rumoured German ships proved to be false, the Atlantic cruiser was abandoned.[20]
In 1915, as a response to German commerce raiding in the early months of the war, the British Admiralty decided to build a new class of large, fast and heavily armed cruisers for trade protection work. Again, a mixed armament of 7.5 in and 6 in guns were chosen, with mixed oil- and coal-fired boilers in order to aid operations in distant waters where oil supplies would be limited. The new design became known as the "Improved Birmingham" class or, with five being built, completing between 1918 and 1925.[21] [22]
In early 1914, the Greek Navy, in response to Turkish naval expansion, placed an order with the Coventry Syndicate, a consortium of the shipbuilders Cammell Laird, Fairfields, John Brown and the armament company Coventry Ordnance Works, for two light cruisers and four destroyers. The light cruisers, which were both to be built by Cammell Laird, and to be named Antinavarchos Kountouriotis and Lambros Katsonis, were based on the design of the Chatham and Birmingham classes, but with a revised armament to be supplied by the Coventry Ordnance Works.[23] [24]
The new cruisers were 446feet long overall, with a beam of 50feet and a draught of 16feet. Displacement was between 5185LT and 5235LT normal, and between 5795LT and 5845LT deep load. Armour was as fitted to the Chathams.[24] Machinery was also as in the Chathams. The first ship, later to become Birkenhead, had the same mixed oil-and coal-fired boilers, with the machinery rated at 25000shp with a speed of, but the second ship (later Chester) had all oil-fired boilers, which boosted power to 31000shp and speed to .[24] The ships' main armament was ten QF 5.5 in (140 mm) Mark I guns (50 calibres long) to a new design by Coventry Ordnance Works. The guns fired an 82lb shell to a range of 13100yd. The lighter shell was easier to handle, and gave a greater rate of fire.[25] [26] It was planned to fit the ships with two 12-pounder 76mm (76 mm) anti-aircraft guns, while two 21-inch torpedo tubes were fitted.[7]
Work continued on the two ships for the Greeks after the outbreak of the First World War, but early in 1915, with no sign of an end to the war, the British Admiralty took over the contract for the two ships, which became the Birkenhead class, together with the 5.5-inch guns and ammunition.[27] The ships' main armament was kept by the Royal Navy, and proved to be successful in service, with the 5.5 in gun being selected as secondary armament for the battlecruisers and and the aircraft carrier . The 12-pounder 76mm anti-aircraft guns were unavailable, however, and Vickers 3-pounder guns were fitted in their place.[7]
After the war, they were offered for sale back to the Greeks, but this offer was not taken up.[28]
| Builder[29] | Laid down | Launched | Commissioned | Fate | ||
|---|---|---|---|---|---|---|
| Bristol class | ||||||
| John Brown, Clydebank | 23 March 1909 | 23 February 1910 | 17 December 1910. | Sold for breaking up 9 May 1921 to Thos. W. Ward, Hayle.[30] | ||
| Fairfield Shipbuilding, Govan | 25 March 1909 | 30 September 1909 | 19 September 1910 | Sold for breaking up 29 April 1927 to Thos. W. Ward, Morecambe. | ||
| William Beardmore, Dalmuir | 15 April 1909 | 28 October 1909 | October 1910 | Sold for breaking up to Thos. W. Ward, Briton Ferry, 9 May 1921. | ||
| Vickers, Barrow-in-Furness | 17 February 1909 | 30 October 1909 | 4 October 1910 | Sold for scrap 8 November 1921. Broken up in Germany. | ||
| Armstrong Whitworth, Elswick | 14 April 1909 | 25 November 1909 | 20 September 1910 | Sold for scrap to Thos. W. Ward, Lelant, 9 May 1921. | ||
| Weymouth class | ||||||
| Armstrong Whitworth, Elswick | 19 January 1910. | 18 November 1910. | October 1911 | Sold for breaking up to Hughes Bolckow, Blyth, 2 October 1928. | ||
| London & Glasgow Shipbuilding, Govan | 27 January 1910 | 12 April 1911 | April 1912 | Sold for breaking up 2 July 1929 to Alloa Ship Breaking Company, Rosyth. | ||
| Vickers, Barrow-in-Furness | 19 February 1910 | 14 December 1910 | October 1911 | Sold for breaking up 13 December 1930 to Alloa, Rosyth.[31] | ||
| William Beardmore, Dalmuir | 21 February 1910 | 20 September 1910 | September 1911 | Torpedoed by German submarine U-66 in the North Sea and damaged 19 August 1916, then torpedoed by German submarine U-63 the next day and sunk off Flamborough Head.[32] | ||
| Chatham class | ||||||
| align=center colspan=6 | Royal Navy | |||||
| HM Dockyard, Chatham | 3 January 1911 | 9 November 1911 | December 1912 | Transferred to the New Zealand Navy 11 September 1920, but returned to Royal Navy 1924.[33] Sold for breaking up to Thos. W. Ward, Pembroke Dock, 13 July 1926. | ||
| William Beardmore, Dalmuir | 3 January 1911 | 9 November 1911 | March 1913 | Sold for breaking up to King, Troon, July 1926. | ||
| John Brown, Clydebank | 6 April 1911 | 16 May 1912 | November 1912 | Sold for breaking up to Thos. W. Ward, Pembroke Dock, 13 July 1926. | ||
| align=center colspan=6 | Royal Australian Navy | |||||
| London & Glasgow, Govan | 11 February 1911 | 29 August 1912 | 26 June 1913 | Broken up at Cockatoo Island, April 1929. | ||
| Cammell Laird, Birkenhead | 14 April 1911 | 30 May 1912 | January 1913 | Sold for breaking up 8 December 1928 to Alloa, Rosyth. | ||
| HMA Dockyard, Cockatoo Island | 25 January 1913 | 30 September 1915 | October 1916 | Sold for breaking up 13 June 1936 to Thos. W. Ward, Briton Ferry. | ||
| Birmingham class | ||||||
| align=center colspan=6 | Royal Navy | |||||
| Armstrong Whitworth, Elswick | 10 June 1912 | 7 May 1913 | 3 February 1914 | Sold for breaking up 5 February 1931 to Thos. W. Ward, Pembroke Dock.[34] | ||
| HM Dockyard, Chatham | 29 July 1912 | 28 April 1913 | 21 April 1914 | Sold for breaking up 8 January 1931 to Thos. W. Ward, Milford Haven. | ||
| HM Dockyard, Pembroke Dock | 13 June 1912 | 18 April 1913 | 1 April 1914 | Torpedoed three times by German submarine U-52 in the North Sea 19 August 1916 and sunk with 38 dead.[35] [36] | ||
| align=center colspan=6 | Royal Australian Navy | |||||
| HMA Dockyard, Cockatoo Island | 20 November 1915 | 27 July 1918 | 4 August 1922 | Sold for breaking up to Australian Iron and Steel Co., Port Kembla, New South Wales, January 1949 | ||
| Birkenhead class | ||||||
(ex-Antinavarchos Kountouriotis) | Cammell Laird, Birkenhead | 27 March 1914 | 18 January 1915 | May 1915 | Sold for scrapping to Cashmore, Newport, Wales, 26 October 1921. | |
(ex-Lambros Katsonis) | 7 October 1914 | 8 December 1915 | May 1916 | Sold for scrapping to Rees, Llanelly, 9 November 1921. | ||
| Ship | Builder | Laid down | Launched | Commissioned | Fate | |
The class saw much service in the First World War and many of the ships left their mark on history. Ships of the class saw action at the Battles of Coronel, the Battle of the Falkland Islands and the Battle of Heligoland Bight in 1914.[37] That same year, Sydney attacked in an action that lasted over an hour and resulted in the German warship being beached by her captain to avoid his ship sinking.[38] Also that year, Birmingham became the first ship to sink a submarine when she rammed the German submarine on 9 August.[39]
In 1915, HMS Glasgow found, which had escaped from the engagement at the Falkland Islands the previous year, in which Glasgow had helped in sinking . Dresden was eventually scuttled by her own crew after a short engagement. Ships of the class also took part in the Battle of Dogger Bank in 1915.
In 1916, ships of the class also saw action at the Battle of Jutland, the largest surface engagement of the First World War . In 1917, a Sopwith Pup from HMS Yarmouth became the first aircraft from a cruiser to shoot down an aircraft, specifically the Zeppelin L23. The ships of the class saw more service than mentioned above, including action against German merchant ships. During the course of the war, two ships of the class were sunk: these were HMS Falmouth and HMS Nottingham, both torpedoed by German submarines.
After the end of the First World War, the surviving ships performed a variety of duties, including service on foreign stations. All ships, except Adelaide, were scrapped by the 1930s. Adelaide saw an extensive refit between 1938 and 1939. However, Adelaide was obsolete when the Second World War began, and she saw limited service, performing patrol and escort duties in the Pacific and Indian Oceans. She was decommissioned in 1945, but recommissioned to become a tender at Sydney. She was broken up in 1949.