Chimera. The pronunciation proved difficult for the ordinary sailors of the period, and she was widely known by variants, most commonly "Billy Ruffian" or "Billy Ruff'n", although "Belly Ruff One" appears in a satirical 1810 print by Thomas Rowlandson, and "Bellyruffron" in the novel Poor Jack by Frederick Marryat. She was decorated with a figurehead of Bellerophon. By the time Bellerophon was launched, there was no pressing need for new warships. The signing of the Treaty of Paris in 1783 brought the American War of Independence to an end while Bellerophon was still under construction. Though Greaves had been contracted to have her ready for launching by April 1784, she spent another two years on the slipway, probably because the Navy Board ordered construction work to be delayed to allow her timber to be seasoned, a luxury available now that there were no pressing military needs. When the launch came, it was delayed several times, finally taking place during a period of heavy autumn storms in October 1786. She was launched with little ceremony on 7 October 1786, by Commissioner Charles Proby, of Chatham Dockyard. She was then towed across the River Medway and anchored off Chatham Dockyard. She was taken into the dry dock there on 7 March 1787, where her hull was fitted with copper sheathing, and she was fitted for the Ordinary. Her final costs came to £30,232.14.4d paid to Greaves for building her, and a further £8,376.15.2d spent on fitting her for service. Laid up at Chatham during the years of peace, Bellerophon was not commissioned until July 1790, when the crisis known as the Spanish Armament broke out. As war with Spain threatened, warships lying in ordinary began to be commissioned and fitted for sea. Bellerophons first commander, Captain Thomas Pasley, arrived on 19 July and began the process of preparing her for service. After a month spent fitting out the ship with guns, masts, stores and rigging, and recruiting a crew, Pasley gave the orders for his crew to slip the moorings on 16 August, and Bellerophon made her way down the Medway to the fleet anchorage at the Nore. From the Nore, Bellerophon proceeded to the Downs and joined the fleet stationed there. She spent three weeks in the roadstead, exercising her guns, before moving to Spithead. The diplomatic crisis with Spain had largely abated by October 1790, and Bellerophon was sent to