Misplaced Pages

#104895

116-668: SS Trent was a British steamship that was built in 1899 as an ocean liner for the Royal Mail Steam Packet Company (RMSP) service between England and the Caribbean . In the First World War she was a Royal Navy depot ship . She was scrapped in 1922. This was the last of three RMSP ships that were named after the English River Trent . RMSP's first Trent was built in 1841 and scrapped in 1867. The second

232-682: A mine off Ramsgate on 12 October 1915 in an explosion that killed at least five other seamen. One casualty, a Newfoundlander serving with the Royal Naval Reserve, was subsequently buried in the Hamilton Road Cemetery, Deal , Kent. A number of RNR officers qualified as pilots and flew aircraft and airships with the Royal Naval Air Service , whilst many RNR ratings served ashore with the RN and RNVR contingents at Gallipoli and at

348-452: A "major driver of the first wave of trade globalization (1870–1913)" and contributor to "an increase in international trade that was unprecedented in human history". Steamships were preceded by smaller vessels, called steamboats , conceived in the first half of the 18th century, with the first working steamboat and paddle steamer , the Pyroscaphe , from 1783. Once the technology of steam

464-587: A Cadet Forces commission, introduced in 2017 and restated in 2018; previously they were appointed within their respective Corps, rather than commissioned (unless they already held a commission separately). They are titled ‘(SCC) RNR’ or ‘(CCF) RNR’ to differentiate from the deployable Royal Naval Reserve. The modern RNR has sixteen Royal Naval Reserve Units (with three satellite units). These are: Previous units that closed due to recommendations in Options for Change: The RNR had an exceptional war record, as evidenced by

580-399: A branch of service. RNR Officers join as a General Duty Reserve, and specialise after commissioning and passing their Fleet Board while RNR Ratings join as General Entry and specialise after basic training. Most branches are open to both ratings and officers with the exception of fleet protection (ratings only) and a small number which recruit exclusively from the officer ranks. Listed below

696-599: A certain depth, however when the depth of the ship changed from added weight it further submerged the paddle wheel causing a substantial decrease in performance. Within a few decades of the development of the river and canal steamboat, the first steamships began to cross the Atlantic Ocean . The first sea-going steamboat was Richard Wright's first steamboat Experiment , an ex-French lugger ; she steamed from Leeds to Yarmouth in July 1813. The first iron steamship to go to sea

812-443: A day when travelling at 13 knots (24 km/h; 15 mph). Her maiden outward voyage to Melbourne took 42 days, with one coaling stop, carrying 4,000 tons of cargo. Other similar ships were rapidly brought into service over the next few years. By 1885 the usual boiler pressure was 150 pounds per square inch (1,000 kPa) and virtually all ocean-going steamships being built were ordered with triple expansion engines. Within

928-560: A demonstration project for the potential use of nuclear energy. Thousands of Liberty Ships (powered by steam piston engines) and Victory Ships (powered by steam turbine engines) were built in World War II. A few of these survive as floating museums and sail occasionally: SS  Jeremiah O'Brien , SS  John W. Brown , SS  American Victory , SS  Lane Victory , and SS  Red Oak Victory . A steam turbine ship can be either direct propulsion (the turbines, equipped with

1044-430: A few further experiments until SS  Aberdeen  (1881) went into service on the route from Britain to Australia. Her triple expansion engine was designed by Dr A C Kirk, the engineer who had developed the machinery for Propontis . The difference was the use of two double ended Scotch type steel boilers, running at 125 pounds per square inch (860 kPa). These boilers had patent corrugated furnaces that overcame

1160-551: A few years, new installations were running at 200 pounds per square inch (1,400 kPa). The tramp steamers that operated at the end of the 1880s could sail at 9 knots (17 km/h; 10 mph) with a fuel consumption of 0.5 ounces (14 g) of coal per ton mile travelled. This level of efficiency meant that steamships could now operate as the primary method of maritime transport in the vast majority of commercial situations. In 1890, steamers constituted 57% of world's tonnage, and by World War I their share raised to 93%. By 1870

1276-473: A given distance, but fewer firemen were needed to fuel the boilers, so crew costs and their accommodation space were reduced. Agamemnon was able to sail from London to China with a coaling stop at Mauritius on the outward and return journey, with a time on passage substantially less than the competing sailing vessels. Holt had already ordered two sister ships to Agamemnon by the time she had returned from her first trip to China in 1866, operating these ships in

SECTION 10

#1732848418105

1392-504: A head wind, most notably against the southwest monsoon when returning with a cargo of new tea. Though the auxiliary steamers persisted in competing in far eastern trade for a few years (and it was Erl King that carried the first cargo of tea through the Suez Canal ), they soon moved on to other routes. What was needed was a big improvement in fuel efficiency. While the boilers for steam engines on land were allowed to run at high pressures,

1508-565: A large number with the West Indies Squadron who became casualties at the Battle of Coronel and later at Jutland . Fishermen of the RNR section served with distinction on board trawlers fitted out as minesweepers for mine clearance operations at home and abroad throughout the war, where they suffered heavy casualties and losses. One such casualty was armed naval drifter HMT Frons Olivae , which hit

1624-403: A long bush of soft metal was fitted in the after end of the stern tube. SS  Great Eastern had this arrangement fail on her first transatlantic voyage, with very large amounts of uneven wear. The problem was solved with a lignum vitae water-lubricated bearing, patented in 1858. This became standard practice and is in use today. Since the motive power of screw propulsion is delivered along

1740-664: A month of satisfactory service they would no longer be Probationary and their ranks were confirmed (effectively a promotion from Acting to 'full' Sub-Lieutenant) after three months. Men over the age of 25 who had earned a watchkeeping certificate were eligible for lieutenant rank after one year's service. By 1945 there were 43,805 officers in the RNVR, nicknamed the "Wavy Navy", after the 3/8-inch wavy sleeve 'rings' that officers wore to distinguish them from their RN and RNR counterparts. These new officers were primarily assigned to anti-submarine warfare / convoy escort , amphibious warfare and

1856-511: A number of conflicts including the Boer War and the Boxer Rebellion . Prior to the First World War , one hundred RNR officers were transferred to permanent careers in the regular navy—later referred to as "the hungry hundred". In their professional careers, many RNR officers went on to command the largest passenger liners of the day and some also held senior positions in the shipping industry and

1972-495: A number of inventions such as the screw propeller , the compound engine , and the triple-expansion engine made trans-oceanic shipping on a large scale economically viable. In 1870 the White Star Line ’s RMS  Oceanic set a new standard for ocean travel by having its first-class cabins amidships, with the added amenity of large portholes, electricity and running water. The size of ocean liners increased from 1880 to meet

2088-466: A number of overseas deployments, including four ships deployed on operations to British Guiana and the West Indies in 1965. The Ton-class minesweepers were replaced by new River-class ships in the mid-1980s, with all but one of the 12-strong class being assigned to RNR divisions. From 1938 until 1957, the RNVR provided aircrew personnel in the form of their own Air Branch. In 1947, their contribution

2204-458: A particularly compact compound engine and taken great care with the hull design, producing a light, strong, easily driven hull. The efficiency of Holt's package of boiler pressure, compound engine and hull design gave a ship that could steam at 10 knots on 20 long tons of coal a day. This fuel consumption was a saving from between 23 and 14 long tons a day, compared to other contemporary steamers. Not only did less coal need to be carried to travel

2320-470: A reduction gear, rotate directly the propellers), or turboelectric (the turbines rotate electric generators, which in turn feed electric motors operating the propellers). While steam turbine-driven merchant ships such as the Algol -class cargo ships (1972–1973), ALP Pacesetter-class container ships (1973–1974) and very large crude carriers were built until the 1970s, the use of steam for marine propulsion in

2436-484: A register of people who could be mobilised and trained swiftly in the event of war to quickly provide a core of new personnel. By September 1939 there were around 2,000 RNV(S)R members, mostly yachtsmen, who when mobilised were sent to active service after a 10-day training course while the RNVR began with a regular 12-week course for officers. On the outbreak of the Second World War, no more ratings were accepted into

SECTION 20

#1732848418105

2552-517: A royal announcement that the RNR and RNVR were to lose their distinctive insignia. Both reserves would now use the same style as the regular RN - officers would wear the straight stripes of lace but with an 'R' in the executive curl while ratings would be distinguished by 'RNR' and 'RNVR' cap tallies or shoulder flashes as required. In 1954 the RNVR's role in the British armed forces for the Cold War era

2668-426: A sailing vessel. The steam engine would only be used when conditions were unsuitable for sailing – in light or contrary winds. Some of this type (for instance Erl King ) were built with propellers that could be lifted clear of the water to reduce drag when under sail power alone. These ships struggled to be successful on the route to China, as the standing rigging required when sailing was a handicap when steaming into

2784-399: A shaft that is positioned above the waterline, with the cylinders positioned below the shaft. SS  Great Britain used chain drive to transmit power from a paddler's engine to the propeller shaft – the result of a late design change to propeller propulsion. An effective stern tube and associated bearings were required. The stern tube contains the propeller shaft where it passes through

2900-417: A wonderful part in the rescue". America ' s crew lowered a line for Trent ' s crew to catch, but gusty conditions repeatedly prevented this. America drifted with the wind at about 12 miles per hour (19 km/h), and Trent followed her for about three hours. Eventually Trent ' s crew succeeded in catching the line and making it fast to the steamship, but another gust broke it and America

3016-619: Is an overview of branches, each of which contains further sub-specialisations. The University Royal Naval Units , although under the jurisdiction of BRNC Dartmouth , are also an honorary part of the Royal Naval Reserve. Students hold the rank of officer cadet (OC), and can be promoted to honorary midshipman on completion of their second year. URNU OCs can now undergo the Accelerated Officer Programme (AOP) to become substantive RNR Midshipmen. They can then either continue on an RNR Unit or be seconded back to their URNU for

3132-816: Is one of the two volunteer reserve forces of the Royal Navy in the United Kingdom . Together with the Royal Marines Reserve , they form the Maritime Reserve . The present RNR was formed by merging the original Royal Naval Reserve, created in 1859, and the Royal Naval Volunteer Reserve ( RNVR ), created in 1903. The Royal Naval Reserve has seen action in World War I , World War II , the Iraq War and

3248-729: The Admiral Commanding, Reserves , the RNR was administered jointly by the Admiralty and the Registrar General of Shipping and Seamen at the Board of Trade throughout its separate existence. In 1910, the RNR (Trawler Section) was formed to recruit and train fishermen for wartime service in minesweepers and other small warships. Officers and men of the RNR soon gained the respect of their naval counterparts with their professional skills in navigation and seamanship, and served with distinction in

3364-556: The Admiralty requisitioned Trent to serve as a depot ship. She was assigned to support the river monitors HMS  Humber , Mersey and Severn in the Gallipoli campaign . Trent transported the monitors' crews to Malta , while the monitors themselves were towed there by tugs. Trent continued to support the monitors, accompanying Mersey and Severn to East Africa in July 1915, for their attack on SMS  Königsberg on

3480-614: The Battle of the Somme with the Royal Naval Division . Merchant service officers and men serving in armed merchant cruisers , hospital ships , fleet auxiliaries and transports were entered in the RNR for the duration of the war on special agreements. Although considerably smaller than the RN and the RNVR (which was three times the size of the RNR at the end of the war), the RNR had an exceptional war record, members being awarded twelve Victoria Crosses . On commencement of hostilities in

3596-468: The Board of Trade (under the authority of the Merchant Shipping Act 1854 ) would not allow ships to exceed 20 or 25 pounds per square inch (140 or 170 kPa). Compound engines were a known source of improved efficiency – but generally not used at sea due to the low pressures available. Carnatic (1863) , a P&O ship, had a compound engine – and achieved better efficiency than other ships of

SS Trent - Misplaced Pages Continue

3712-496: The Boer War showed that it would not be possible to call up a sufficient number of reservists without negatively impacting the work of the merchant and fishing fleets. In 1903 an Act of Parliament was passed enabling the Admiralty to raise a second reserve force – the Royal Naval Volunteer Reserve. While the RNR consisted of professional civilian sailors, the RNVR was open to civilians with no prior sea experience. By

3828-472: The Coastal Forces division - these being the areas of the naval service which saw the most growth during the Second World War, and which were most suitable for employing temporary officers who were quickly-trained in specific areas of expertise. In 1942 the Admiralty revised its arrangements for manning the fleet, reflecting the expansion of the service, the numbers of experienced career officers available and

3944-403: The Cold War (eg. Russian aircraft carrier Admiral Kuznetsov ), because of needs of high power and speed, although from 1970s they were mostly replaced by gas turbines . Large naval vessels and submarines continue to be operated with steam turbines, using nuclear reactors to boil the water. NS Savannah , was the first nuclear-powered cargo-passenger ship, and was built in the late 1950s as

4060-677: The East Coast to the West Coast of the United States began on 28 February 1849, with the arrival of SS  California in San Francisco Bay . The California left New York Harbor on 6  October 1848, rounded Cape Horn at the tip of South America, and arrived at San Francisco, California, after a four-month and 21-day journey. The first steamship to operate on the Pacific Ocean was

4176-573: The Mediterranean and then through the Red Sea . While this worked for passengers and some high value cargo, sail was still the only solution for virtually all trade between China and Western Europe or East Coast America. Most notable of these cargoes was tea , typically carried in clippers . Another partial solution was the Steam Auxiliary Ship – a vessel with a steam engine, but also rigged as

4292-713: The Navy List on VE Day , all but 600 had returned to civilian life by the time the RNVR was officially reconstituted in its original peacetime form in October 1946, now with 12 Divisions across the UK. The post-war RNVR was permitted its own independent sea-going capability - something which had not been the case before the war - with Divisions being given charge of surplus Motor Launches and Motor Minesweepers , which were commissioned, given new names and used for training duties as well as supporting larger RN units. In 1951 King George VI issued

4408-704: The Royal Australian Naval Reserve (RANR), the Royal New Zealand Naval Volunteer Reserve (RNZNVR), and the Canadian Forces Naval Reserve . Previously there were also colonial RNVR units, such as the Newfoundland Royal Naval Reserve , Ceylon Royal Naval Volunteer Reserve (CRNVR), Hong Kong Royal Naval Volunteer Reserve (HKRNVR), Straits Settlements Royal Naval Volunteer Reserve (SSRNVR) and

4524-694: The Rufiji River . Trent later returned to home waters, and on 1 October 1917 became the depot ship for HMS Icarus , the Royal Naval Air Service base at Houton Bay, Scapa Flow . Here she supported the Orkney Air Service's anti-submarine patrols until March 1918. The Admiralty returned Trent to her owners on 23 January 1919. She was scrapped at Rotterdam in February 1922. Steamship As steamships were less dependent on wind patterns, new trade routes opened up. The steamship has been described as

4640-496: The Second World War , the RN once again called upon the experience and professionalism of the RNR to help it to shoulder the initial burden until sufficient manpower could be trained for the RNVR and 'hostilities only' ratings. Again, RNR officers found themselves in command of destroyers, frigates , sloops , landing craft and submarines, or as specialist navigation officers in cruisers and aircraft carriers . In convoy work,

4756-717: The War in Afghanistan . The Royal Naval Reserve (RNR) has its origins in the Register of Seamen, established in 1835 to identify men for naval service in the event of war, although just 400 volunteered for duty in the Crimean War in 1854 out of 250,000 on the Register. This led to a Royal Commission on Manning the Navy in 1858, which in turn led to the Naval Reserve Act of 1859. This established

SS Trent - Misplaced Pages Continue

4872-696: The reciprocating steam engine , and was far easier to control. Diesel engines also required far less supervision and maintenance than steam engines, and as an internal combustion engine it did not need boilers or a water supply, therefore was more space efficient and cheaper to build. The Liberty ships were the last major steamship class equipped with reciprocating engines. The last Victory ships had already been equipped with marine diesels, and diesel engines superseded both steamers and windjammers soon after World War Two. Most steamers were used up to their maximum economical life span, and no commercial ocean-going steamers with reciprocating engines have been built since

4988-401: The 1960s. Most steamships today are powered by steam turbines . After the demonstration by British engineer Charles Parsons of his steam turbine-driven yacht, Turbinia , in 1897, the use of steam turbines for propulsion quickly spread. The Cunard RMS Mauretania , built in 1906 was one of the first ocean liners to use the steam turbine (with a late design change shortly before her keel

5104-527: The Atlantic Ocean on a scheduled liner voyage before she was converted to diesels in 1986. The last major passenger ship built with steam turbines was the Fairsky , launched in 1984, later Atlantic Star , reportedly sold to Turkish shipbreakers in 2013. Most luxury yachts at the end of the 19th and early 20th centuries were steam driven (see luxury yacht ; also Cox & King yachts ). Thomas Assheton Smith

5220-579: The Atlantic, around the southern tip of Africa, and across the Indian Ocean . Before 1866, no steamship could carry enough coal to make this voyage and have enough space left to carry a commercial cargo. A partial solution to this problem was adopted by the Peninsular and Oriental Steam Navigation Company (P&O), using an overland section between Alexandria and Suez , with connecting steamship routes along

5336-463: The Bristol-New York route. The idea of regular scheduled transatlantic service was under discussion by several groups and the rival British and American Steam Navigation Company was established at the same time. Great Western's design sparked controversy from critics that contended that she was too big. The principle that Brunel understood was that the carrying capacity of a hull increases as

5452-449: The Fleet", mainly in the roles of logistics and communications - specialist support roles the need for which would expand significantly in the event of a major deployment or extended conflict but which it was not seen as viable to maintain within the regular RN's peacetime strength. This left the mine-warfare, seaman and diving specialists in "limbo" until the Iraq War (second Gulf War), when

5568-517: The Liverpool to New York route. RMS  Titanic was the largest steamship in the world when she sank in 1912; a subsequent major sinking of a steamer was that of the RMS ; Lusitania , as an act of World War I . Launched in 1938, RMS  Queen Elizabeth was the largest passenger steamship ever built. Launched in 1969, Queen Elizabeth 2 (QE2) was the last passenger steamship to cross

5684-546: The Navy and the media in times of crisis - this followed several unfortunate public relations errors during the War. Defence reviews over the last 50 years have been inconsistent. Successive reviews have seen reserve forces cut then enlarged, allocated new roles, then cuts withdrawn, then re-imposed. Options for Change in 1990 reduced the RNR by 1,200 and closed many training centres, including HMS Calpe (Gibraltar), HMS  Wessex (Southampton) and HMS Graham (Glasgow). By 1995

5800-579: The RN, as well as in mobilised posts in Afghanistan, the Middle East, the Balkans and the UK. The centenary of the formation of the RNVR was commemorated by the RNR in London in 2003 with a parade on Horse Guards, at which Prince Charles took the salute. The Merchant Navy officers within today's RNR commemorated RNR 150 in 2009. In 2002 the RNR ceased to be issued its own identity cards , with reservists being issued

5916-549: The RNR as a reserve of professional seamen from the British Merchant Navy and fishing fleets, who could be called upon during times of war to serve in the regular Royal Navy. The RNR was originally a reserve of seamen only, but in 1862 was extended to include the recruitment and training of reserve officers. From its creation, RNR officers wore on their uniforms a unique and distinctive lace consisting of stripes of interwoven chain. A number of drill-ships were established at

SECTION 50

#1732848418105

6032-419: The RNR's total strength was 2600 - 800 officers and 1800 ratings. The Strategic Defence Review in 1998 continued this by disbanding the 10th Minesweeping Squadron, meaning that the RNR no longer had its own ships and sea-going capability. In return the RNR was to gain 350 members in total strength. The restructured RNR was designed to "provide an expanded pool of personnel to provide additional reinforcements for

6148-614: The RNVR and new intake to the RNR stopped. The RNVR became the route by which virtually all new-entry commissioned officers joined the naval service during the war – the exception being professional mariners who already held master's tickets , who would join the RNR. All new ratings would go direct to the regular Royal Navy. With the exception of the RNV(S)R and a proportion of recruits taken on as Direct Entrants (men with qualifications who would serve in specialist roles such as surgeons , engineers and those selected for intelligence duties), all

6264-684: The Royal Navy realised it had a pool of reservists with no real sea post. Echoing the Royal Naval Division in the First World War, the Above Water Force Protection branch was formed "from RN reservists with no draft appointment at the outbreak of war". Because of a lack of full-time personnel, mine-warfare returned (in part) to the RNR. Officers and ratings serve on active service in Full Time Reserve Service billets throughout

6380-508: The Royal Navy rebrand in 2003 that cost circa £100,000, the Royal Naval Reserve has been without its own logo; when one is required, the Royal Navy logo is used with the word Reserves added below, and there is no logo for the entire Maritime Reserve. The older Royal Naval Reserve logo is still used as the watermark for passing out certificates issued to Royal Naval Reserve ratings at HMS  Raleigh . All RNR personnel, regardless of rank, enrol as general service before being later assigned to

6496-467: The analysis of the conflict it was decided that a reserve of personnel with experience of handling large merchant ships and trained in joint operations should be maintained, with serving Merchant Navy officers as the main focus. The Falklands War also led to the formation of the Public Affairs Branch (now Media Operations), providing a body of trained specialists to manage the relationship between

6612-426: The commercial market has declined dramatically due to the development of more efficient diesel engines . One notable exception are LNG carriers which use boil-off gas from the cargo tanks as fuel. However, even there the development of dual-fuel engines has pushed steam turbines into a niche market with about 10% market share in newbuildings in 2013. Lately, there has been some development in hybrid power plants where

6728-436: The competing problems of heat transfer and sufficient strength to deal with the boiler pressure. Aberdeen was a marked success, achieving in trials, at 1,800 indicated horsepower , a fuel consumption of 1.28 pounds (0.58 kg) of coal per indicated horsepower. This was a reduction in fuel consumption of about 60%, compared to a typical steamer built ten years earlier. In service, this translated into less than 40 tons of coal

6844-557: The convoy commodore or escort commander was often an RNR officer. As in the First World War, the RNR acquitted itself well, winning four VCs. An intermediate form of reserve, between the professional RNR and the civilian RNVR, had been created in 1936. This was the Royal Naval Volunteer (Supplementary) Reserve, open to civilians with existing and proven experience at sea as ratings or officers. In peacetime this carried no obligation or requirement for service or training, being merely

6960-435: The cube of its dimensions, while water resistance only increases as the square of its dimensions. This meant that large ships were more fuel efficient, something very important for long voyages across the Atlantic. Great Western was an iron-strapped, wooden, side-wheel paddle steamer, with four masts to hoist the auxiliary sails. The sails were not just to provide auxiliary propulsion, but also were used in rough seas to keep

7076-609: The dozen Victoria Crosses awarded in WWI; and demonstrations of exceptional merit continued in peacetime. The Blue Ensign of the United Kingdom has been worn since 1865 by British-registered merchant vessels commanded by active or retired officers of the RNR, when authorised by Admiralty warrant. The flag dates from 1801; this usage dates from 1865. A number of RNR formed before World War II : There are also naval reserve forces operated by other Commonwealth of Nations navies, including

SECTION 60

#1732848418105

7192-686: The duration of their university studies. Training Officers attached to URNUs are appointed as temporary officers in the RNR, without commission or call-up liability, who wear the 'R' in their executive curl. As nominal members of the RNR (SCC RNR), officers of the Sea Cadet Corps and the RN CCF Combined Cadet Force retain the use of the former RNVR 'wavy navy' lace. However, unlike their traditional RNVR counterparts, they are civilians, do not come under General Trained Strength and are not liable to be called up or deploy. Officers receive

7308-444: The early 1850s. This was superseded at the beginning of the 20th century by floating pad bearing which automatically built up wedges of oil which could withstand bearing pressures of 500 psi or more. Steam-powered ships were named with a prefix designating their propeller configuration i.e. single, twin, triple-screw. Single-screw Steamship SS , Twin-Screw Steamship TSS , Triple-Screw Steamship TrSS . Steam turbine-driven ships had

7424-428: The end of this period, they would become a Cadet Rating and proceed for officer training at HMS  King Alfred . Those who did not meet and maintain the required standards while as CW Candidates or while training at King Alfred would continue to serve as RN ratings. Those who were successful would become Temporary Probationary Acting Sub-Lieutenants in the RNVR (those under the age of 21 became Midshipmen ). After

7540-411: The first screw propeller to an engine at his Birmingham works, an early steam engine , beginning the use of a hydrodynamic screw for propulsion. The development of screw propulsion relied on the following technological innovations. Steam engines had to be designed with the power delivered at the bottom of the machinery, to give direct drive to the propeller shaft . A paddle steamer's engines drive

7656-462: The generally good conduct and performance of the temporary officers taken into the RNVR. A Fleet Order of that year stated that "the Fleet must be manned by Reserve officers with a leavening of Active Service officers, and not manned by RN Officers diluted with Reserve officers." This opened up new postings and promotion paths to temporary RNVR officers, including service on battleships , cruisers and aircraft carriers which had previously been largely

7772-488: The government. At the turn of the 20th century, there were concerns at the Admiralty and in parliament that the RNR was insufficient to bolster the manning of the greatly-expanded fleet in the event of large-scale war. Despite the huge growth in the number of ships in the British merchant service since the RNR's foundation, many of the additional seamen were from the colonies or were not British subjects. The pool of potential RNR officers had shrunk since 1859 and experience in

7888-425: The hull as waves pass beneath it—becomes too great. Iron hulls are far less subject to hogging, so that the potential size of an iron-hulled ship is much greater. In the spring of 1840 Brunel also had the opportunity to inspect SS  Archimedes , the first screw-propelled steamship, completed only a few months before by F. P. Smith's Propeller Steamship Company. Brunel had been looking into methods of improving

8004-429: The hull structure. It should provide an unrestricted delivery of power by the propeller shaft. The combination of hull and stern tube must avoid any flexing that will bend the shaft or cause uneven wear. The inboard end has a stuffing box that prevents water from entering the hull along the tube. Some early stern tubes were made of brass and operated as a water lubricated bearing along the entire length. In other instances

8120-417: The main seaports around the coasts of Great Britain and Ireland , and seamen left their vessels to undertake gunnery training in a drill-ship for one month every year. After initial shore training, officers embarked in larger ships of the Royal Navy's fleet (usually battleships or battle cruisers) for one year, to familiarise themselves with gunnery and naval practice. Although under the operational authority of

8236-547: The morning of 18 October, America ' s crew sighted Trent , which was also off her usual course. Trent ' s usual route had been changed to make a one-off call at Antilla, Cuba . She left Antilla on 14 October, making her two days late to reach her next call at Bermuda . The change in both her course and her schedule was what led Trent to be in the right position at the right time to sight and rescue America ' s crew. America contacted Trent by signal lamp , and requested assistance. The airship crew signalled to

8352-572: The name and legal identity of the original RNR but primarily retained the character and structure of the RNVR, being composed mostly of trained civilians not from sea-going professions. The service continues to adapt to conflicts; the AW Branch was formed following the Falklands War in 1982, when over 100 reservists volunteered for special temporary duties during, primarily serving in communications, intelligence, staff headquarters and medical roles. But in

8468-402: The needs of the human migration to the United States and Australia. RMS  Umbria and her sister ship RMS  Etruria were the last two Cunard liners of the period to be fitted with auxiliary sails. Both ships were built by John Elder & Co. of Glasgow, Scotland, in 1884. They were record breakers by the standards of the time, and were the largest liners then in service, plying

8584-399: The newly created temporary RNVR officers had initially been recruited as ratings and undertaken ten weeks of basic training. Recruits identified as having the potential to be officers at the end of this training were called Commission & Warrant (CW) Candidates and then had to serve at least six months as Ordinary Seamen , including three months at sea. If still considered a CW candidate at

8700-573: The newly formed Blue Funnel Line . His competitors rapidly copied his ideas for their own new ships. The opening of the Suez Canal in 1869 gave a distance saving of about 3,250 nautical miles (6,020 km; 3,740 mi) on the route from China to London. The canal was not a practical option for sailing vessels, as using a tug was difficult and expensive – so this distance saving was not available to them. Steamships immediately made use of this new waterway and found themselves in high demand in China for

8816-419: The operating costs of steamships were still too high in certain trades, so sail was the only commercial option in many situations. The compound engine, where steam was expanded twice in two separate cylinders, still had inefficiencies. The solution was the triple expansion engine, in which steam was successively expanded in a high pressure, intermediate pressure and a low pressure cylinder. The theory of this

8932-416: The outbreak of the First World War there were six RNVR divisions in major ports around the UK. On mobilisation in 1914, the RNR consisted of 30,000 officers and men. Officers of the permanent RNR on general service quickly took up seagoing appointments in the fleet, many in command, in destroyers , submarines , auxiliary cruisers and Q-ships . Others served in larger units of the battle fleet including

9048-451: The paddle steamer Beaver , launched in 1836 to service Hudson's Bay Company trading posts between Puget Sound Washington and Alaska . The most testing route for steam was from Britain or the East Coast of the U.S. to the Far East . The distance from either is roughly the same, between 14,000 to 15,000 nautical miles (26,000 to 28,000 km; 16,000 to 17,000 mi), traveling down

9164-453: The performance of Great Britain ' s paddlewheels, and took an immediate interest in the new technology, and Smith, sensing a prestigious new customer for his own company, agreed to lend Archimedes to Brunel for extended tests. Over several months, Smith and Brunel tested a number of different propellers on Archimedes in order to find the most efficient design, a four-bladed model submitted by Smith. When launched in 1843, Great Britain

9280-773: The port of Savannah, Georgia , US, on 22 May 1819, arriving in Liverpool , England, on 20 June 1819; her steam engine having been in use for part of the time on 18 days (estimates vary from 8 to 80 hours). A claimant to the title of the first ship to make the transatlantic trip substantially under steam power is the British-built Dutch-owned Curaçao , a wooden 438-ton vessel built in Dover and powered by two 50 hp engines, which crossed from Hellevoetsluis , near Rotterdam on 26 April 1827 to Paramaribo , Surinam on 24 May, spending 11 days under steam on

9396-459: The prefix TS . In the UK the prefix RMS for Royal Mail Steamship overruled the screw configuration prefix. The first steamship credited with crossing the Atlantic Ocean between North America and Europe was the American ship SS  Savannah , though she was actually a hybrid between a steamship and a sailing ship, with the first half of the journey making use of the steam engine. Savannah left

9512-415: The preserve of regular RN and experienced RNR officers. It also put temporary officers on a more equal footing with their regular counterparts when it came to being considered for executive and command positions. As intended, the thousands of RNVR officers employed during the Second World War on temporary commissions were quickly demobilised when the conflict ended. Of the more than 43,000 RNVR officers on

9628-526: The revolutionary SS  Great Britain , also built by Brunel, became the first iron-hulled screw-driven ship to cross the Atlantic. SS Great Britain was the first ship to combine these two innovations. After the initial success of its first liner, SS  Great Western of 1838, the Great Western Steamship Company assembled the same engineering team that had collaborated so successfully before. This time however, Brunel, whose reputation

9744-435: The same documents as their regular counterparts. In 2007 the last distinctions in insignia between regular and reserve services were eliminated - officers no longer wore the 'R' in the curl of their rank stripes and ratings wore 'Royal Navy' shoulder flashes. The exception is for those holding honorary officer positions in the RNR, who continue to wear uniforms with the 'R' in the executive curl. Commodore RNR Melanie Robinson

9860-478: The shaft, a thrust bearing is needed to transfer that load to the hull without excessive friction. SS  Great Britain had a 2 ft diameter gunmetal plate on the forward end of the shaft which bore against a steel plate attached to the engine beds. Water at 200 psi was injected between these two surfaces to lubricate and separate them. This arrangement was not sufficient for higher engine powers and oil lubricated "collar" thrust bearings became standard from

9976-477: The ship on an even keel and ensure that both paddle wheels remained in the water, driving the ship in a straight line. The hull was built of oak by traditional methods. She was the largest steamship for one year, until the British and American's British Queen went into service. Built at the shipyard of Patterson & Mercer in Bristol, Great Western was launched on 19 July 1837 and then sailed to London, where she

10092-511: The start of the 1870 tea season. The steamships were able to obtain a much higher rate of freight than sailing ships and the insurance premium for the cargo was less. So successful were the steamers using the Suez Canal that, in 1871, 45 were built in Clyde shipyards alone for Far Eastern trade. Throughout the 1870s, compound-engined steamships and sailing vessels coexisted in an economic equilibrium:

10208-604: The steam turbine is used together with gas engines. As of August 2017 the newest class of Steam Turbine ships are the Seri Camellia -class LNG carriers built by Hyundai Heavy Industries (HHI) starting in 2016 and comprising five units. Nuclear powered ships are basically steam turbine vessels. The boiler is heated, not by heat of combustion , but by the heat generated by nuclear reactor. Most atomic-powered ships today are either aircraft carriers or submarines . Royal Naval Reserve The Royal Naval Reserve ( RNR )

10324-516: The steamship by Morse code , and also by displaying a signal of two red lights one below the other, meaning that America was not under control. Trent changed course to reach America , which was struggling to maintain an altitude of 300 ft (91 m). After establishing contact by signal lamp, America and Trent communicated almost entirely by wireless telegraph. Trent ' s Master , Captain CE Down, RNR , reported that "The wireless played

10440-603: The time. Her boilers ran at 26 pounds per square inch (180 kPa) but relied on a substantial amount of superheat . Alfred Holt , who had entered marine engineering and ship management after an apprenticeship in railway engineering, experimented with boiler pressures of 60 pounds per square inch (410 kPa) in Cleator . Holt was able to persuade the Board of Trade to allow these boiler pressures and, in partnership with his brother Phillip launched Agamemnon in 1865. Holt had designed

10556-404: The voyage was actually made under sail. The first ship to make the transatlantic trip substantially under steam power may have been the British-built Dutch-owned Curaçao , a wooden 438-ton vessel built in Dover and powered by two 50 hp engines, which crossed from Hellevoetsluis , near Rotterdam on 26 April 1827 to Paramaribo , Surinam on 24 May, spending 11 days under steam on

10672-474: The way out and more on the return. Another claimant is the Canadian ship SS  Royal William in 1833. The British side-wheel paddle steamer SS  Great Western was the first steamship purpose-built for regularly scheduled trans-Atlantic crossings, starting in 1838. In 1836 Isambard Kingdom Brunel and a group of Bristol investors formed the Great Western Steamship Company to build a line of steamships for

10788-499: The way out and more on the return. Another claimant is the Canadian ship SS  Royal William in 1833. The first steamship purpose-built for regularly scheduled trans-Atlantic crossings was the British side-wheel paddle steamer SS  Great Western built by Isambard Kingdom Brunel in 1838, which inaugurated the era of the trans-Atlantic ocean liner . SS  Archimedes , built in Britain in 1839 by Francis Pettit Smith ,

10904-465: Was 112664 and her code letters were RMGF. On 6 June 1909 Trent ran aground on Semedine Bank, near Cartagena, Colombia . Magdalena tried to tow her off, but without success. Trent was refloated that May. By 1910 Trent was equipped for submarine signalling and wireless telegraphy . The Marconi Company supplied and operated her wireless equipment, which had a range of about 160 nautical miles (300 kilometres). By 1913 her wireless call sign

11020-605: Was 50.0 ft (15.2 m), her depth was 32.3 ft (9.8 m) and her tonnages were 5,573  GRT and 3,085  NRT . Trent had a single screw , driven by a three-cylinder triple expansion engine . It was rated at 1,050 NHP and gave her a speed of 15 knots (28 km/h). Tagus and Trent had a straight stem , counter stern and twin funnels . The two ships looked like RMSP's Nile and Danube of 1893 and 1894, but were slightly smaller, and had two masts instead of Nile and Danube ' s three. RMSP registered Trent at London . Her UK official number

11136-413: Was UNR. In October 1910 Trent rescued the six-man crew of the airship America , including its owner, Walter Wellman . They had been trying to make the first transatlantic crossing by air. America had left Bader Field , New Jersey on 15 October. Changes in wind direction had slowed the airship's progress and blown it off-course, and technical problems had caused it to lose height. At 0507 hrs on

11252-554: Was an English aristocrat who forwarded the design of the steam yacht in conjunction with the Scottish marine engineer Robert Napier . By World War II , steamers still constituted 73% of world's tonnage, and similar percentage remained in early 1950s. The decline of the steamship began soon thereafter. Many had been lost in the war, and marine diesel engines had finally matured as an economical and viable alternative to steam power. The diesel engine had far better thermal efficiency than

11368-574: Was appointed the first female Commodore Maritime Reserves (COMMARES) on 4 February 2020. In October 2022 a new RNR unit, HMS  Pegasus , was commissioned as a specialist unit administering the RNR Air Branch, based at RNAS Yeovilton (HMS Heron ) and with a satellite office at RNAS Culdrose (HMS Seahawk ) . This was the first naval unit to be commissioned during the reign of King Charles III . RNR rank badges 1916–1951: [REDACTED] RNVR rank badges 1916–1958: [REDACTED] Since

11484-466: Was at its height, came to assert overall control over design of the ship—a state of affairs that would have far-reaching consequences for the company. Construction was carried out in a specially adapted dry dock in Bristol , England. Brunel was given a chance to inspect John Laird 's 213-foot (65 m) (English) channel packet ship Rainbow —the largest iron- hulled ship then in service—in 1838, and

11600-412: Was blown away. The airship crew then reduced America ' s altitude and launched her lifeboat. The airship struck the lifeboat and nearly capsized it, but the boat righted itself and the airship floated away. The airmen rowed toward Trent , whose crew lowered lines to bring them safely aboard the steamship. Their position was now about 408 miles southeast of Sandy Hook , New Jersey. On 6 March 1915

11716-503: Was built as Vasco da Gama in 1873, renamed Trent in 1878 and scrapped in 1897. In 1899 Robert Napier and Sons in Govan built a pair of sister ships for RMSP. Tagus was launched on 27 June and completed that October. Trent was launched on 19 September 1899 and completed in January 1900. Trent was built as yard number 467. Her registered length was 410.0 ft (125.0 m), her beam

11832-479: Was by far the largest vessel afloat. Brunel's last major project, SS  Great Eastern , was built in 1854–1857 with the intent of linking Great Britain with India, via the Cape of Good Hope , without any coaling stops. This ship was arguably more revolutionary than her predecessors. She was one of the first ships to be built with a double hull with watertight compartments and was the first liner to have four funnels. She

11948-442: Was confirmed - Divisions would be equipped with Ton-class minesweepers which would collectively become the 101st Minesweeper Squadron . This was part of the RN's permanent established strength and would consist of a rotating number of RNVR minesweepers, each fulfilling a period of active duty for its parent Division and giving the men of that Division their required regular time on active service at sea. The 101st Minesweeper Squadron

12064-512: Was cut to anti-submarine and fighter squadrons only. By 1957, it was considered by the UK government that the training required to operate modern equipment was beyond that expected of reservists and the Air Branch squadrons were disbanded. (The US government took a different view, and the US Navy and Marine reserve squadrons today still operate front-line types alongside the regular units.) The Air Branch

12180-561: Was declared as part of Britain's standing naval commitment to NATO . While only a small portion of the total RNVR was on active service with the 101st Squadron at any one time, it was envisaged that in time of war the RNVR as a whole would become Britain's primary coastal minesweeping force, allowing the use of regular RN ships and men for other duties. The unit became the 10th Minesweeping Squadron in 1962. The Squadron regularly conducted two large-scale training exercises each year, one to Gibraltar and one to North Africa . The Squadron also made

12296-402: Was established in the 1850s by John Elder , but it was clear that triple expansion engines needed steam at, by the standards of the day, very high pressures. The existing boiler technology could not deliver this. Wrought iron could not provide the strength for the higher pressures. Steel became available in larger quantities in the 1870s, but the quality was variable. The overall design of boilers

12412-452: Was fitted with two side-lever steam engines from the firm of Maudslay, Sons & Field , producing 750 indicated horsepower between them. The ship proved satisfactory in service and initiated the transatlantic route, acting as a model for all following Atlantic paddle-steamers. The Cunard Line 's RMS  Britannia began her first regular passenger and cargo service by a steamship in 1840, sailing from Liverpool to Boston. In 1845

12528-557: Was improved in the early 1860s, with the Scotch-type boilers – but at that date these still ran at the lower pressures that were then current. The first ship fitted with triple expansion engines was Propontis (launched in 1874). She was fitted with boilers that operated at 150 pounds per square inch (1,000 kPa) – but these had technical problems and had to be replaced with ones that ran at 90 pounds per square inch (620 kPa). This substantially degraded performance. There were

12644-405: Was laid down) and was soon followed by all subsequent liners. Most larger warships of the world's navies were propelled by steam turbines burning bunker fuel in both World Wars, apart from obsolete ships with reciprocating machines from the turn of the century, and rare cases of usage of diesel engines in larger warships. Steam turbines burning fuel remained in warship construction until the end of

12760-486: Was mastered at this level, steam engines were mounted on larger, and eventually, ocean-going vessels. Becoming reliable, and propelled by screw rather than paddlewheels, the technology changed the design of ships for faster, more economic propulsion. Paddlewheels as the main motive source became standard on these early vessels. It was an effective means of propulsion under ideal conditions but otherwise had serious drawbacks. The paddle-wheel performed best when it operated at

12876-401: Was reformed at RNAS Yeovilton in 1980, though it is only open to service leavers. In 1958 it was decided to amalgamate the RNR and RNVR into a single reserve service. Legally the RNR was the branch that continued, so that no new legislation had to be drafted to allow the service to function and all RNVR personnel received formal papers transferring them to the RNR. The new unified reserve took

12992-416: Was soon converted to iron-hulled technology. He scrapped his plans to build a wooden ship and persuaded the company directors to build an iron-hulled ship. Iron's advantages included being much cheaper than wood, not being subject to dry rot or woodworm , and its much greater structural strength. The practical limit on the length of a wooden-hulled ship is about 300 feet, after which hogging —the flexing of

13108-641: Was the 116-ton Aaron Manby , built in 1821 by Aaron Manby at the Horseley Ironworks , and became the first iron-built vessel to put to sea when she crossed the English Channel in 1822, arriving in Paris on 22 June. She carried passengers and freight to Paris in 1822 at an average speed of 8 knots (9 mph, 14 km/h). The American ship SS  Savannah first crossed the Atlantic Ocean arriving in Liverpool, England, on June 20, 1819, although most of

13224-456: Was the biggest liner throughout the rest of the 19th century with a gross tonnage of almost 20,000 tons and had a passenger-carrying capacity of thousands. The ship was ahead of her time and went through a turbulent history, never being put to her intended use. The first transatlantic steamer built of steel was SS  Buenos Ayrean , built by Allan Line Royal Mail Steamers and entering service in 1879. The first regular steamship service from

13340-399: Was the change from the paddle-wheel to the screw-propeller as the mechanism of propulsion. These steamships quickly became more popular, because the propeller's efficiency was consistent regardless of the depth at which it operated. Being smaller in size and mass and being completely submerged, it was also far less prone to damage. James Watt of Scotland is widely given credit for applying

13456-514: Was the world's first screw propeller -driven steamship for open water seagoing. She had considerable influence on ship development, encouraging the adoption of screw propulsion by the Royal Navy , in addition to her influence on commercial vessels. The first screw-driven propeller steamship introduced in America was on a ship built by Thomas Clyde in 1844 and many more ships and routes followed. The key innovation that made ocean-going steamers viable

#104895