until 2022. Following the relocation of a boatbuilding exhibit (to Boathouse 4), Boathouse 5 is being refurbished as a new 'orientation and ticketing facility'. The Portsmouth Naval Base Property Trust has long sought to extend the area of the Historic Dockyard to cover Dry Docks 4 and 5 and the historic Block Mills building among others. In 2015 an architectural design competition for the project was won by Latz+Partner; however the Ministry of Defence subsequently indicated that property to the north of the Mary Rose will not be ceded for several years at least, due to the site's proximity to the proposed berth of the new Queen Elizabeth-class aircraft carriers. History Along with Woolwich, Deptford, Chatham and Plymouth, Portsmouth has been one of the main Royal Navy Dockyards or Bases throughout its history. Medieval period Richard I ordered construction of the first dock on the site in 1194, while his successor John added walls around the area in 1212. The docks were used by various kings when embarking on invasions of France through the 13th and 14th centuries, including the Saintonge War in 1242. Edward II ordered all ports on the south coast to assemble their largest vessels at Portsmouth to carry soldiers and horses to the Duchy of Aquitaine in 1324 to strengthen defences. Tudors The first recorded dry dock in the world was built in Portsmouth by Henry VII in 1495. The first warship built here was the Sweepstake of 1497; of more significance were the carracks Mary Rose of 1509 and Peter Pomegranate of 1510—both were rebuilt here in 1536. The wreck of the Mary Rose (which capsized in 1545, but was raised in 1982), is on display in a purpose built museum. A fourth Tudor warship was the galleass Jennett, built in 1539 and enlarged as a galleon in 1558. The appointment of one Thomas Jermyn as Keeper of the Dock at Portsmouth is recorded in 1526, with a Clerk of the Stores being appointed from 1542. Contemporary records suggest that the dry dock was enlarged and rebuilt in 1523 in order to accommodate the Henry Grace à Dieu (the largest ship of the fleet at that time); but a hundred years later it is described as being filled with rubble. Following the establishment of Chatham Dockyard in the mid-1500s, no new naval vessels were built here until 1648, but ships from Portsmouth were a key