numbered as 2007 and named "Prince of Wales". The feasibility study was officially launched in October 2011 and was broken into three stages.} The first stage involved creating an electronic model of the engine for track dynamic analysis; Tornado was used as the basis for this modelling, together with track position data supplied by Network Rail – Tornado had been fitted with accelerometers during its testing – the data from which provided a basis against which to validate the modelling data and assumptions. The second and third stages were to involve creating a computer model of a P2, and then analysing modifications to the design using the computer software. Modelling data for the P2 design and a modified design with a LNER Class V2 type pony truck was published in early 2013. The rail-dynamics software used was Resonate Group's 'VAMPIRE' product. The computer modelling showed acceptable dynamics and the project to build No. 2007 was officially launched in September 2013 at the A1 Convention with a seven- to ten-year construction timetable. The locomotive is said to share 70% commonality of parts with Tornado, including the boiler and tender. Modern modifications to the original design include roller bearings (also featured on Tornado) and an all-welded, all-steel boiler; the final build will utilise Lentz poppet valve gear. In most other respects and appearance, the loco, to be numbered 2007, will match that of the original No. 2001 Cock o' the North prior to streamlining. On 14 November 2013 the P2 Steam Locomotive Company (P2SLC) announced that the name of its new P2 would be Prince of Wales, in honour of the 65th birthday of Charles, Prince of Wales, the future King Charles III. Construction began in May 2014 with the locomotive's frames being cut at Tata Steel's Scunthorpe works. The project cost is estimated at £5,000,000. Doncaster P2 Locomotive Trust The Doncaster P2 Locomotive Trust (Registered Charity No. 1149835) plans to build a working replica of the prototype No. 2001 Cock O' The North as modified in 1938, using Gresley motion, Walschaerts valve gear, and an LNER A4 style 'Bugatti' streamlined front. The locomotive's frames were cut in April 2014 at Tata Steel's Wednesfield works. Modelling From 1935 to 1937, Märklin built P2 No. 2001 Cock O' The North and No. 2002 Earl Marischal in a black fantasy paint scheme. The catalogue number of the O gauge tinplate three-rail steam locomotive was