Post Captain is the second historical novel in the Aubrey–Maturin series by Patrick O'Brian, first published in 1972. It features the characters of Captain Jack Aubrey and naval surgeon Stephen Maturin, and is set in the early 19th century during the Napoleonic Wars.
HMS Indefatigable was one of the Ardent-class 64-gun third-rate ships-of-the-line designed by Sir Thomas Slade in 1761 for the Royal Navy. She was built as a ship-of-the-line, but most of her active service took place after her conversion to a 44-gun razee frigate. She had a long career under several distinguished commanders, serving throughout the French Revolutionary Wars and the Napoleonic Wars. She took some 27 prizes, alone or in company, and the Admiralty authorised the issue of four clasps to the Naval General Service Medal in 1847 to any surviving members of her crews from the respective actions. She was broken up in 1816.
HMS Sirius was a 36-gun fifth-rate frigate of the Royal Navy. Between 1797 and 1805, the Sirius was engaged in maintaining the blockade of Napoleonic Europe. She was lost in 1810 when her crew scuttled her after she grounded during the Battle of Grand Port.
HMS Amazon, was a 36-gun Amazon-class frigate, built at Rotherhithe in 1795 to a design by Sir William Rule. Carrying a main battery of 18-pounder long guns, she was the first of a class of four frigates. She had a short but eventful career during the French Revolutionary War, which she spent in the Channel and Western Approaches, part of a frigate squadron under Sir Edward Pellew. She was wrecked in Audierne Bay in 1797, following an action on 13 January with the French ship-of-the-line, Droits de l'Homme.
HMS Lively was a 32-gun fifth-rate Alcmene-class frigate of the British Royal Navy launched on 23 October 1794 at Northam. She took part in three actions – one a single-ship action, one a major battle, and one a cutting-out boat expedition – that would in 1847 qualify her crews for the issuance of the Naval General Service Medal. Lively was wrecked in 1798.
Révolutionnaire, was a 40-gun Seine-class frigate of the French Navy, launched in May 1794. The British captured her in October 1794 and she went on to serve with the Royal Navy until she was broken up in 1822. During this service Revolutionnaire took part in numerous actions, including three for which the Admiralty would in 1847 award clasps to the Naval General Service Medal, and captured several privateers and merchant vessels.
The Battle of Cape Santa Maria was a naval engagement that took place off the southern Portuguese coast, in which a British squadron under the command of Commodore Graham Moore attacked and defeated a Spanish squadron commanded by Brigadier Don José de Bustamante y Guerra.
Coquille was a 40-gun frigate of the French Navy, lead ship of her class, and launched in 1794. The Royal Navy captured her in October 1798 and took her into service as HMS Coquille, but an accidental fire destroyed her in December 1798.
Vénus was a corvette of the French Navy that the British captured in 1800. Renamed HMS Scout, she served briefly in the Channel before being wrecked in 1801, a few days after taking a major prize.
HMS Amphion was a 32-gun fifth rate frigate, the lead ship of her class, built for the Royal Navy during the 1790s. She served during the Napoleonic Wars.
Seine was a 38-gun French Seine-class frigate that the Royal Navy captured in 1798 and commissioned as the fifth-rate HMS Seine. On 20 August 1800, Seine captured the French ship Vengeance in a single ship action that would win for her crew the Naval General Service Medal. Seine's career ended in 1803 when she hit a sandbank near the Texel.
Rear-Admiral Samuel Sutton was an officer in the Royal Navy. He entered the service shortly after the start of the American War of Independence, and spent most of his early career serving with Captain and later Admiral Joshua Rowley. He saw action at several engagements with the French fleets in the West Indies, and ended the war as a lieutenant. Left without active employment by the following years of peace, Sutton briefly returned to service during the Spanish Armament in 1790, but the outbreak of the French Revolutionary Wars in 1793 brought him steady work. After serving in a number of ships and being present at Cornwallis's Retreat in 1795, Sutton received command of a sloop, and with it the opportunity to render a service to a member of the French aristocracy, and the future Charles X of France. Promoted for his good service, Sutton served as a flag captain to several admirals, including Horatio Nelson. He briefly commanded HMS Victory, before surrendering her to Thomas Hardy, who would go on to command Victory at Trafalgar, and be present at Nelson's death. Sutton instead took command of a frigate, and in 1804 was involved in a controversial action that saw the capture of three Spanish frigates and the destruction of a fourth. Made wealthy from the spoils, Sutton nevertheless remained in the navy, taking part in the chase of the French fleet to the West Indies in 1805. His health declined during this period, and he went ashore in October that year. He retired from active service, and served as a magistrate and local official for his community, being promoted to rear-admiral in 1821 and dying in 1832.
Corona was a 40-gun Pallas-class frigate of the Italian Navy. The French built her in Venice in 1807 for the Napoleonic Kingdom of Italy. The British captured Corona at the Battle of Lissa and took her into the Royal Navy as HMS Daedalus. She grounded and sank off Ceylon in 1813 while escorting a convoy.
Gracieuse was a 32-gun Charmante-class frigate of the French Navy. Renamed to Unité in 1793, she took part in the French Revolutionary Wars. The Royal Navy captured her in 1796 off Île d'Yeu and brought her into British service as HMS Unite. She was sold in 1802
HMS Medusa was a 32-gun fifth-rate frigate of the Royal Navy that served in the Napoleonic Wars. Launched on 14 April 1801, she took part in the action of 5 October 1804 against a Spanish squadron, in the River Plate Expedition in 1807, and made several captures of enemy ships, before being converted to a hospital ship in 1813. She was broken up in 1816.
HMS Horatio was a Royal Navy 38-gun fifth-rate Lively-class frigate, built out of fir timbers at the yard of George Parsons in Bursledon.
HMS Imperieuse was a 38-gun fifth-rate frigate of the Royal Navy. Built in Ferrol, Spain, for the Spanish Navy she was launched as Medea in 1797. In 1804 she was part of a squadron carrying gold from South America to Spain that was seized by the British while Spain and Britain were at peace. Medea was subsequently taken into service with the Royal Navy and was briefly named HMS Iphigenia before being renamed Imperieuse in 1805.
The Thames-class frigate was a 32-gun fifth-rate frigate class of eight ships of the Royal Navy based on the Richmond-class frigate designed by William Bately. The ships were ordered to the older design, which was of a smaller type of ship compared to more modern designs, so that they could be built quickly and cheaply in time to assist in defending against Napoleon's expected invasion of Britain. The class received several design changes to the Richmond class, being built of fir instead of oak, with these changes making the class generally slower and less weatherly than their predecessors, especially when in heavy weather conditions. The first two ships of the class, Pallas and Circe, were ordered on 16 March 1804 with two more ordered on 1 May and the final four on 12 July. The final ship of the class, Medea, was cancelled on 22 October before construction could begin but the other seven ships of the class were commissioned between 1804 and 1806.
HMS Hussar was a 38-gun fifth-rate Amazon-class frigate of the Royal Navy. Launched at the end of 1799, the entirety of the frigate's career was spent serving in the English Channel and off the coast of Spain. Hussar primarily served as a convoy escort and cruiser, in which occupation the frigate took several prizes, including the French privateer Le General Bessieres. Towards the end of 1803 Hussar was sent to serve in Sir Edward Pellew's Ferrol squadron. On 8 February 1804 Hussar was returning to England with dispatches when the ship was wrecked off the coast of Île de Sein. The crew attempted to sail for home in a fleet of commandeered boats, but the majority were forced to go into Brest to avoid sinking in bad weather, where they were made prisoners of war.
The Narcissus-class frigate was a 32-gun, 18-pounder fifth-rate frigate class of five ships of the Royal Navy. Designed by Surveyor of the Navy Sir John Henslow, the class was created to make use of shipyards that could not construct larger frigates. They were similar in design to the preceding 32-gun frigate class, the Amphion class, but were slightly shorter. Two ships were initially constructed, with a later batch of three being ordered in response to an Admiralty request for the resumption of production of proven frigate designs. The final two ships of the class were cancelled when the shipyard they were being constructed at went bankrupt. Unlike her sister ships, the name ship of the class Narcissus was armed with experimental short 24 pounders rather than 18 pounders.
United Kingdom 
