In 1987 a ship called Nordeutscher Lloyd ship or some thing like that took the blue Riband from Cunard's Campania and Lucania (Blue Riband was the fast Riband for crossing the ocean). So the Cunard line need some new ships some new Super Ships and these ships had to be FAST. In 1903 an agreement had been reached whereby the Goverment would lend £2,600,000 to Cunard to build two ships capable of 24 to 25 knots. In addition they agreed to make an annual payment to Cunard on the condition that the two ships were be able to being armed and that the Government would have a claim on their services in times if in a emergency.

The Builder of Mauretaina was Swan, Hunter & Wigham Richardson, Wallsend-On-Tyne. And was launched at Duchess of Roxburghe. Mauretania was driven by Steam turbines these where the fast mern sea turbines out her Service speed was 25 knots with a Gross Tonnage 31,938 tons she was very fast for her day with her 4 Quadruple screw perpolers. Her Passenger accommodation was 563 1st class, 464 2nd class, 1,138 3rd class, she had 4 funnels and 2 masts.

Her Launch date was 20 September 1906 and her maiden voyage from Liverpool on 16 November 1907. On her maiden voyage she had to face a lot of stomes and fog but she made it in a very good time geting to New York on 22 November. On the 2 May 1908 Mauretaina had left Liverpool a bad day was come for Mauretaina she thought that they hit some think it was a submerged object that they hit damgeding Despite the propeller blades being damaged but this was good for the Cunard line replace both inner shafts with four bladed propellers. A refit was also carried out at Canada Graving Dock later that year. Later on that year in April Mauretania had captured both eastbound and westbound records and retained the Blue Riband for 20 years, until July 1929.

In 1909 in public need speed. Well they wont speed was inevitable that ports closer to London than Liverpool were required, and soon Fishguard was developed as a port of call for Atlantic liners. The Mauretania was the first Cunard liner to use this port, on 30 August 1909. At the end of 1909 the ships first Captain, John T. Pritchard, retired and Captain William Turner assumed command. The reputation of the ship attracted several prominent passengers. On a voyage during December 1910 Prince Albert and Prince Radziwell were amongst the passengers, along with Mr. Carlisle, the managing director of Harland and Wolff. In June 1911 the ship brought thousands of visitors to Britain for the Coronation of King George V.

In 1913 December the Mauretania returned to Liverpool for its annual overhaul, part of which involved work on the main propulsion turbines.On 26 January 1914 whilst men were working on the turbine blades, one of the gas cylinders exploded. Four men were killed and six were injured. The resulting fire was extinguished and the main damage was confined to the blades in the starboard turbine. Mauretania didnt go back to sea untill march that year thats when Britain declared war on Germany, on 4 August 1914, the Mauretania was on its way to New York. At the last minute the ship was diverted to Halifax and the Admiralty sent out an order requisitioning the ship as an armed merchant cruiser, as soon as it returned to Liverpool. On 11 August, however, the Mauretania and the Lusitania were released from Government duties.

In may 1915 after the loss of the RMS Lusitania, Mauretania was required to return to service. Before it did, the Admiralty requisitioned the ship to transport troops during the Gallipoli campaign, later in May. During this period the Mauretania made several voyages. On one of these voyages the Mauretania was attacked by a submarine but managed to avoid the torpedo, largely due the ship's high speed. Mauretania at the end of August the RMS Mauretania returned to Liverpool and was fitted out as a hospital ship. then left Liverpool on 21 October to assist with the evacuation of the wounded from Gallipoli. The Mauretania made several further voyages as a hospital ship and completed its last voyage on 25 January 1916. But this was not the end of the RMS Mauretania not the end of her war service on September 29 it was requisitioned again to carry Canadian troops. In October,November 1916 it made a few voyages from Liverpool to Halifax carrying Canadian troops bound for France. After this it was laid up on the Clyde until 1918. In March 1918 it was again used as a troopship carrying over 30,000 American troops before the Armstice in November.

After the end of the war the Mauretania was used in the repatriation of American and Canadian troops. From 12 December it was decided that the Mauretania would now sail from Southampton and call at Cherbourg on its way to New York. It made its final trooping voyage on 28 June 1919 and was then refitted at Southampton.

On September 21 1919 Mauretania sailed from Southampton on its first commercial voyage since World War One began. An overhaul, planned for 1920, was delayed as the demand for passenger services to Europe from America was so great. On 22 July 1921 Whilst docked at Southampton, a fire come out on bored Mauretania the fire required the efforts of both the fire brigade and crew to extinguish the blaze because it sperd very quickly the damged confined to the first class cabin area of Mauretania. So Mauretania was once again back at the shiping yards they took the opportunity to convert from coal to oil burning. By March 1922 the Mauretania had resumed its usual service. On the 25 of July Mauretania broke the pre-war Atlantic speed record Mauretania now average speed around 26 knots now. An overhull was taken again in November but due to industrial disputes it was to complete the work at Cherbourg. Despite a difficult journey, being towed by tugs, the Mauretania reached Cherbourg and the work was completed. In 1924 the Harbour Commission complained about the Mauretania's speed as it left the . The heavy wash created had flooded Cowes main street and caused considerable disruption. A refit in 1928 saw the Mauretania furniture and decor modernized. New ships built for the Nordeutscher Lloyd line, were now posing a threat to the Mauretania's domination of the Atlantic. The ships Europa and Bremen were launched in August 1928. The Bremen soon broke the Atlantic speed record but the margin of time was quite small. On 27 November 1929 Mauretania collided with a train ferry on Robbins Reef, after leaving New York. no one was injured but the ships bows were damaged. The hole in the bows however was repaired within in the day. After a winter it returned to service in February 1930 and during the following years concentrated mainly on cruising. The Mauretania made its final passenger sailing from Southampton on 30 June 1934 the day Cunard and White Star Lines merged.After two cruises to the West Indies it returned to Southampton on 2 October. The completion of the Queen Mary and the merger with White Star meant that the fleet had to be reduced.

The Mauretania was purchased on 3 April 1935 by Metal Industries Ltd. Befor the she was at Southampton docks her ixtures and fittings were auctioned on 14 May at Southampton Docks. On 1 July the ship left for the Tyne. On 3 July it reached the Firth of Forth and was then moved to Rosyth for scap.