Battle of Mahé
The Battle of Mahé was a minor naval engagement of the last year of the French Revolutionary Wars, fought on 19 August 1801 in the harbour of Mahé in the Seychelles, a French colony in the Indian Ocean. Since the demise of the French Indian Ocean squadron in 1799, the Royal Navy had maintained dominance in the East Indies, controlling the shipping routes along which trade flowed and allowing the rapid movement of military forces around the theatre. French First Consul Napoleon Bonaparte had long-harboured ambitions of threatening British India, and in 1798 had launched an invasion of Egypt as an initial step to achieving this goal. The campaign had failed, and the French army in Egypt was under severe pressure by early 1801, partly due to the presence of a British squadron acting with impunity in the Red Sea.
To disrupt British ships supplying the Red Sea squadron the French Navy sent the newly built 36-gun frigate Chiffonne to the Western Indian Ocean under the command of Pierre Guiyesse. This ship, also carrying 32 exiled political prisoners, was instructed to operate from Mahé. After an eventual journey, Chiffone arrived in the Seychelles in August and Guiyesse ordered his crew to effect repairs before the mission could begin. Anchored in a bay sheltered by coral reefs and protected by a hastily erected gun battery, he believed his ship would be safe from attack.
The British commander in the region, Rear-Admiral Peter Rainier, had assumed the French would send a force against the Red Sea squadron and ordered the 38-gun frigate HMS Sibylle under Captain Charles Adam to investigate. Adam sailed to Mahé and discovered the French ship undergoing repairs. Carefully manoeuvring through the coral reefs, Adam brought Sybille alongside Chiffone and fought a brief but fiercely contested battle before Guiyesse was forced to surrender. A month later, the French brig Flèche, operating from the same harbour on the same mission, was intercepted and sunk by the brig HMS Victor. These operations were the last significant actions of the war in the Indian Ocean, the Peace of Amiens coming into effect in October.
Background
In 1801 the French Revolutionary Wars were drawing to a close. The conflict, which had begun in 1792, had seen the new French Republic and its allies fighting against a shifting coalition of European powers, of which only Great Britain, recently renamed the United Kingdom, had been consistently opposed to France. In the Indian Ocean, where Britain maintained a lucrative trading Empire centred on British India, the Royal Navy had enjoyed almost continual supremacy under the command of Rear-Admiral Peter Rainier. Only between 1796 and 1799 had the French Navy, in the form of a squadron of frigates operating from the island base of Île de France under the command of Contre-amiral Pierre César Charles de Sercey, offered any resistance. Gradually this force had either returned to France or been defeated in battle, and the destruction of the frigate Preneuse at the Battle of Port Louis in December 1799 had restored absolute British control.Bonaparte in Egypt
The importance of the East Indies to British trade encouraged a number of French plans to threaten the region, of which the most advanced was the invasion, in 1798, of Egypt by a French Army under General Napoleon Bonaparte. Although the campaign saw initial success, the annihilation of the French Mediterranean Fleet by Sir Horatio Nelson at the Battle of the Nile on 1 August 1798 effectively doomed the campaign to failure. Later in the year Bonaparte considered building a squadron at Suez in the Red Sea, but the plans were abandoned when a British squadron, operating from Jeddah under the command of Rear-Admiral John Blankett assumed control of the region. Bonaparte returned to France the following year, but the British Red Sea squadron remained in operation.In 1801, a British army landed in Northern Egypt, sparking a short campaign which ended with the Capitulation of Alexandria and the complete surrender of French forces in the country. Blankett's squadron provided distant support for this effort, sending an army from the garrison of India up the Nile, although this force arrived too late to influence the campaign. The French however wished to disrupt British operations in the Red Sea, and considered a number of schemes including diverting Ganteaume's expedition to the Indian Ocean. Eventually however the only warship available was the newly constructed 36-gun frigate Chiffonne, which sailed from Nantes on 14 April 1801 under the command of Commander Pierre Guiyesse. Also on board were 32 political prisoners condemned to exile, who Guiyesse was ordered to land at Mahé.
Guiyesse's journey
Chiffonne had an eventful voyage to the Indian Ocean, capturing a Portuguese merchant schooner off Brazil on 15 May and then encountering a Portuguese frigate Andorinha on 18 May. Armed with 24 24-pounder carronades, Andorinha was no match for ChiffoneRainier had been campaigning in the Indian Ocean since 1794, and had anticipated that the French might send a naval force to disrupt operations in the Red Sea. He surmised that the Seychelles were ideally situated for this type of operation and issued orders for one of his largest frigates to cruise in the area to intercept any French raiders. This ship was HMS Sibylle, a 38-gun frigate captured from the French in 1794 at the Battle of Mykonos. The commander was Charles Adam, who had replaced Edward Cooke after Cooke was mortally wounded during the capture of the French frigate Forte in the Bay of Bengal at the Action of 28 February 1799.
On arriving at Mahé, Guiyesse landed his prisoners and ordered his men to make repairs to their frigate following their long journey. The foremast in particular needed work, and it was consequently removed, Guiyesse carefully anchoring Chiffone at the centre of a complex series of coral reefs. The captured schooner and a small ketch were anchored alongside assisting with repairs and Guiyesse had ordered his men to establish a supporting gun battery on the shore, positioned to inflict raking fire on any ship attempting to engage the French frigate. This battery was composed of guns taken from the forecastle of Chiffone, stabilised on wooden planks and protected by fascines. Behind the battery a furnace had been constructed to allow the guns to fire specially heated shot, designed to set fire to attacking ships.
Battle of Mahé
In the early morning of 19 August, Sybille was reconnoitering the Seychelles when flag signals were observed over Ste. Anne Island, a small island to the east of Mahé. Adam felt this was an unusual circumstance and ordered his ship to investigate. Passing Ste. Anne flying false French colours, Chiffone could be clearly seen at anchor close inshore at Mahé. Adam ordered the main topsail backed and prepared his ship with springs on the anchor cables to provide more maneuverability in shallow waters. The main batteries of 24-pounder long guns were cleared for action and, with his preparations made, Adam gave orders for the foresail set, gliding slowly forward into the complex system of reefs which sheltered the French ship. Passage through these obstacles was only possible by stationing a man at the masthead who was tasked with observing the colour of the water ahead of the ship: darker water indicated deeper water, but the gradations in color were so slight that they could only be observed from the vantage point on top of the mainmast.Adam's slow progress took more than an hour, reaching the safer waters of the inner roads at 10:15. Guiyesse was prepared, and at 10:00 he had fired a warning shot at the distant Sybille and raised the French tricolor. Adam was still separated from Chiffone by an impenetrable reef, but had now closed the distance between the ships to approximately, well within effective range. At 10:25 Sybille was aligned correctly and Adam raised his ensign and fired the first broadside, followed instantly by fire from Chiffone, the schooner and the battery on shore, which as planned was positioned correctly to rake Sybille. The exchange was a short one, lasting only 17 minutes. At 10:42, with casualties mounting and his ship damaged, Guiyesse struck his colours and cut his ship's anchor cables, allowing Chiffone to drift onto the reef. The schooner had been sunk by well placed shot from the quarterdeck. Adam responded by swinging Sybille about to fire on the battery, sending ship's boats to take possession of Chiffone and attack the shore party manning the battery. When the boats reached the beach however, the French gunners retreated inland, leaving their guns behind.
Sybille
Combatant summary
In this table, "Guns" refers to all cannon carried by the ship, including the maindeck guns which were taken into consideration when calculating its rate, as well as any carronades carried aboard. Broadside weight records the combined weight of shot which could be fired in a single simultaneous discharge of an entire broadside.Fighting in September
The action had a followup a few weeks later when the 18-gun French brig Flèche arrived in June from Nantes on a raiding operation with another 35 political prisoners. Flèche also used Mahé as a base to raid British shipping, under Lieutenant Jean-Baptiste Bonami, but was discovered near the Seychelles at 11:30 on 2 September by the 18-gun British ship HMS Victor. Victor, commanded by Captain [George Ralph Collier, was a small ship with an exceptionally heavy armament, mounting 16 32-pounder short-ranged carronades and two 6-pounder long guns. Collier had been detached from the Red Sea squadron to hunt for Flèche and initially sailed to Diego Garcia to stock up on turtle meat before starting his cruise off the Seychelles. Sighting his quarry, Collier gave chase and caught the French brig at 17:30, only to have his rigging badly damaged by two broadsides from Flèche, although his own guns caused considerable damage in return. Bonami used his advantage to pull away from Victor, but was unable to lose his opponent. Collier followed his elusive enemy for the next two days, occasionally pulling within range but never close enough for a decisive action. By dawn on 5 September however the French brig had escaped.Collier assumed that Flèche was seeking shelter at Mahé and directed Victor towards the harbour. When the island came in sight at 15:30 on the same day, the French brig could be seen in the anchorage. Collier slowly approached his target, anchoring beyond the reef at 19:00. with night approaching Collier was unwilling to risk his vessel in the complex channels, and instead the ship's master, James Crawford, took a boat out during the night and took soundings to locate a safe channel. Although the boat came under fire, a course was successfully plotted. The next morning Flèche lay ready for action at the mouth of the channel, a revolutionary red flag flying at the mast head and volunteers from the escaped crew of Chiffone helping to man the guns. Collier took Victor across the reef in the face of the French brig, which maintained a constant raking fire into the British ship as it advanced. The process took all day, Victor not reaching the safer waters of the inner road until 21:00 and gradually warping within close range of Flèche during the evening. At 23:45 Collier deemed his ship was close enough to the enemy and opened fire with his main broadside. A fierce close range duel began, lasting more than two hours, until at 02:20 on 7 September Flèche began to sink.
As British boat crews advanced on the brig to take possession, the French crew drove their brig onto the reef deliberately and set the vessel ablaze. As they departed the British crew arrived, lowered the flag and extinguished the fire. The damage to the French ship had been too great however and Flèche slowly rolled over into deeper water and sank below the surface. Although two men had been wounded in the fighting on 2 September, not a single British casualty was recorded on 7 September, despite heavy damage to the hull and rigging of Victor. Bonami later reported four of his men killed and did not specify the number of wounded, although British sailors reported seeing significantly higher casualties when they boarded the brig.