Persian Gulf campaign of 1809 The Persian Gulf Campaign , in 1809 , was an operation by a British Royal Navy to force Arab pirates to cease their raids on British ships in the Persian Gulf , particularly on the Persian and Arabian coasts of the Straits of Hormuz . The operation ' s success was limited as the Royal Navy forces , already heavily involved in the Napoleonic Wars , were unable to permanently suppress pirate activity in the region . The expedition did achieve its short term goals by destroying three pirate bases and over 80 pirate vessels , including the largest pirate ship in the region , the converted merchant ship " Minerva " . Although operations continued into 1810 , the British were unable to destroy every pirate vessel and by 1811 the pirate attacks had resumed , although at a lower intensity than previously . The operation was a joint campaign by the Royal Navy and the fleet of the Honourable East India Company ( HEIC ) , with soldiers drawn from the garrison of Bombay . The expeditionary force , led by Captain John Wainwright in the Navy frigate HMS " Chiffone " , was despatched to the region , following an escalation in pirate attacks on British shipping in the Persian Gulf after the French established diplomatic missions in Muscat and Tehran in 1807 , and encouraged pirate activity . These attacks not only threatened British trade links in the region , but also placed British relations with Oman and Persia in jeopardy at a time when French aspirations against British India were a cause for concern to the British government . Because the available charts of the Persian Gulf were inaccurate or incomplete at the time , pirate ships could hide from Wainwright ' s squadron in the uncharted inlets , a problem Wainwright reported upon his return that resulted in improved British cartography of the area . Background . In the early nineteenth century , the Indian Ocean was an important link in the trade route s from British India to the United Kingdom , and Honourable East India Company ( HEIC ) merchant ships , known as East Indiamen , regularly crossed the ocean carrying millions of pounds worth of goods . One of the most important ports for the Indian trade was Bombay , on the western coast of the Indian subcontinent , a significant hub for regional trade with its links to the Persia n and Arab ports of the Persian Gulf . The ships that traded in the Persian Gulf were named " country ships " and were much smaller and weaker than the big East Indiamen . The British had long maintained a naval presence in the region , but the outbreak of the Napoleonic Wars in 1803 diverted much of the British strength in the Indian Ocean to the Dutch colonies of the Cape of Good Hope and Java and the French bases on Île Bonaparte and Île de France , leaving the Persian Gulf and Arabian Sea largely undefended . In addition , convoy guardships were needed to escort the East Indiamen through hostile waters and the Navy presence in the Gulf was replaced by warships owned by the HEIC , part of their private fleet nicknamed the " Bombay Marine " . Like the Royal Navy , the Bombay Marine were spread across many thousands of miles of ocean , often leaving the country ships in the Persian Gulf undefended . As French raiders were rare in the Gulf , few country ships operated in convoys and so they became targets for pirate dhow s and bhagala s operating from semi or completely independent harbours in Persia or along the Arabian Peninsula . In 1805 , two large ships " Shannon " and " Trimmer " were captured by fleets of pirates , who gathered together to overwhelm the larger merchant ships . The crews were massacred and " Trimmer " taken over and converted into a formidable pirate ship . When the HEIC warship " Mornington " , which carried 24 cannon , attempted to recapture " Trimmer " a few months later she was attacked by nearly 40 pirate ships and only just managed to escape destruction herself . Diplomatic failures . Lacking the available naval forces to launch a sizeable campaign in the Gulf , the British authorities attempted to use diplomacy to end the threat . In February 1806 , the young Sultan of Oman , Sa ' id II ibn Sultan , signed a treaty at Bandar Abbas promising to bring an end to piracy originating from his territory , but by 1807 the French had installed consulates in Tehran and Muscat and piracy continued unabated with their encouragement . In 1807 , Lord Minto , Governor General of India , determined to send ambassadors to the Sikh Empire , Afghanistan and Persia in an effort to secure their support and prevent the French from gaining allies on India ' s western borders . As part of this diplomatic campaign , the ambassador to Persia was instructed to discuss the piracy problem with the Persian government , but due to French influence in Tehran , he was unable to obtain any guarantees . A second diplomatic mission , sent from London in 1808 under Sir Harford Jones , was instructed to discuss the issue again , Jones deciding to travel to Bushire in Persia by sea . The diplomatic convoy consisted of the frigate HMS " Nereide " and two HEIC sloops , " Sylph " and " Sapphire " . The convoy was commanded by Captain Robert Corbet , who refused to wait for the slower sloops once the force had reached the Persian Gulf . " Nereide " arrived at Bushire on 14 October 1808 . Jones completed his journey by land . Corbet returned south to the Straits of Hormuz , expecting to meet the sloops on his return journey . On 21 October however he discovered " Sylph " in the hands of pirates , who had swarmed the isolated warship , captured her and massacred her crew . Corbet was able to recapture the vessel and later rejoined " Sapphire " , which had been detached to conduct survey ' s of the Persian coast , but the operation demonstrated that it was the pirates who now controlled the Southern Persian Gulf . Pirates in the Arabian Sea . In April 1808 , despite the brief deployment of the ship of the line HMS " Albion " and frigates HMS " Phaeton " and HMS " Dedaigneuse " to the Persian Gulf , pirate dhows appeared off Gujerat , raiding shipping at Surat before they were driven off by ships of the Bombay Marine . Later in the year , a huge fleet of 50 pirate raiders appeared off Sind in the Arabian Sea and caused severe disruption to the regional trade . The fleet attacked merchant shipping along the Indian coast and even seized a large country ship named " Minerva " , massacring her crew and converting her into their flagship . At its height in early 1809 , it was estimated that the pirate forces in the Persian Gulf and Arabian Sea included 60 large bhagala s , over 800 dhows and employed 19 , 000 men , against just two HEIC ships , " Mornington " and " Teignmouth " . British operations . In the aftermath of the raid on Sind and following the 1809 monsoon season , the British authorities in India decided to make a significant show of force against the pirates , in an effort not only to destroy their larger bases and as many ships as could be found , but also to counteract French encouragement of the pirates from their embassies in Persia and Oman . Forces were gathered at Bombay during the summer : the small HEIC warships , " Mornington " , " Aurora " , " Ternate " , " Mercury " , " Nautilus " , " Prince of Wales " , " Ariel " and " Fury " joined by the bomb ketch " Stromboli " and the Royal Navy frigates HMS " Caroline " under Charles Gordon and " Chiffone " under John Wainwright , who was placed in command of the entire expeditionary force with the temporary rank of commodore . The force was complemented with troops seconded from the Bombay garrison , including a battalion of the 65th Foot , soldiers from the 47th Foot and an assortment of HEIC marines , engineers , artillery men and sepoy s from the 2nd Bombay Native Infantry under the command of Lieutenant Colonel Lionel Smith of the 65th . The expeditionary force left Bombay on 17 September , intending to rendezvous at Muscat the following week . However , the force was repeatedly delayed during their passage , first with providing escorts to convoys of country ships in the Arabian Sea and subsequently with rescuing survivors of the " Stromboli " , which was so rotten that she fell apart in the ocean swell with considerable loss of life . When the force eventually arrived at Muscat in October , Sultan Sa ' id informed Wainwright that over 20 , 000 Bedouin warriors had descended on the coast to join the pirates . Understanding that a protracted land campaign would be impossible with the forces available , Wainwright determined to make a series of small raids against the principle pirate bases in the area of the Straits of Hormuz , beginning with Ras al - Khaimah , to the north of the Strait on the Arabian coast . Battle of Ras al - Khaimah . The British flotilla arrived off the independent town of Ras al - Khaimah on 11 November , discovering " Minerva " and a fleet of dhows in the harbour . The pirate fleet initially sailed out to attack the British but retreated once the size of the expeditionary force became clear . " Minerva " failed to make the return to port successfully and was wrecked on a sandbank , the crew setting fire to their ship to prevent her seizure by boats launched from " Chiffone " . Onshore , the pirates and their Bedouin allies ( whose numbers are unknown , but were significantly less than 20 , 000 ) formed a series of emplaced defences around the town that were protected from offshore bombardment by sandbanks which blocked the approach of Wainwright ' s heavier warships . On 12 November , Wainwright deployed his smaller ships close inshore to bombard the town and provide cover for his troop dispositions offshore . At 02 : 00 on 13 November , two squadrons of ship ' s boats made amphibious landings : a small force under Lieutenant Samuel Leslie landed to the north of the emplaced positions , acting as a diversion while the main body of the expeditionary force landed to the south under Lieutenant Colonel Smith . Leslie ' s diversion distracted the Arab defenders , but enough remained in the southern defences to make a significant counterattack on Smith ' s beachhead . Cannon fire from the ship ' s boats covering the landing drove the Arabs back , and Smith ordered his men to advance with their bayonet s fixed , pushing into the town and driving out the Arabs house by house . To cover their advance , Smith ' s men set fire to the buildings in their path , which created a pall of smoke under cover of which Smith was able to storm and capture the Sheik ' s palace . With the harbour secure , Wainwright ordered the squadron into the bay and there burnt over 50 pirate craft , including 30 large bhagalas . Smith secured the town itself , burning the warehouses where the pirates ' loot was stored and destroying the ammunition stores and fortifications around the town . The Arab forces , who had retreated after the fall of the palace , taunted the British from the surrounding hills but did not make any counterattacks . By the morning of 14 September , the operation was complete and the British force returned to their ships , having suffered light casualties of five killed and 34 wounded . Arab losses are unknown , but were probably significant , while the damage done to the pirate fleets was severe : over half of the largest and most dangerous vessels had been destroyed at Ras al - Khaimah . Further operations . On 17 November , Wainwright ordered an attack on the Persian town of Linga , the inhabitants fleeing at the arrival of the British fleet , and Wainwright ' s ships burning 20 dhows without opposition or casualties . Further exploration on the Southern Persian coast revealed that most harbours were empty . Wainwright ' s main target was Laft on Qeshm Island , which was a principal pirate stronghold . Sending ships to block the passages to the Qeshm Channel , Wainwright hired local pilots and descended on the town on 26 November . Following fruitless negotiations with local sheiks , Wainwright ordered an attack on 27 November at 14 : 00 , Smith ' s troops landing unopposed . Assuming the enemy to have fled , Smith ' s men approached the town ' s fortress , but a heavy fire was unleashed upon them as the British troops reached the gate . Despite heavy casualties , Smith was able to rally his forces and , with artillery support from the sloop " Fury " , forced the fort to surrender at sunset , after the sheik had been given guarantees he would not be harmed or taken prisoner . Eleven large pirate vessels were burnt by British landing parties , while the expeditionary force suffered 70 casualties in the fight at the fort . Arab losses were estimated at more than 50 killed in the fort alone . The town was turned over to Sheik Dewar , a local ruler who professed support for the British , and Wainwright withdrew his forces to Muscat in early December ; all of the squadron reassembled there by Christmas . Only one further operation was launched , a successful attack on 3 January 1810 against the town of Shinas , which had rebelled against Sultan Sa ' id and was swiftly recaptured and restored to him . Although minor naval operations against individual pirate ships continued into 1810 , Wainwright and the main body of the squadron returned to Bombay in January , having considered their mission to inflict significant damage on the pirate forces in the Persian Gulf to have been a success . Aftermath . The operation succeeded in its aim of reducing French influence in Oman and in dissuading the political forces in the region from encouraging attacks on British shipping , but it was unable to totally halt piracy in the Persian Gulf . By 1811 , when much of the Royal Navy and HEIC forces in the Indian Ocean were diverted to Java , the pirates had returned in force , although their destructive actions were weaker than before and rarely strayed into the Arabian Sea . Ultimately , it was not until the forces of the Ottoman Empire seized Medina in 1812 , that some measure of control could be exerted over the pirates of the Arabian peninsula . Subsequent British intervention , both military and diplomatic , also reduced the threat from piracy during the nineteenth century . The campaign had a significant effect on British cartography of the region . Wainwright reported that the available charts of the Persian Gulf were inaccurate or incomplete , thus allowing pirate ships to hide from his squadron in uncharted inlets . The Bombay Marine had long been aware of this problem and had been developing charts of the region in the years leading up to the campaign , under David Ewen Bartholomew , who had been on " Sapphire " during Corbet ' s mission to the region and whose charts were published in 1810 as a response to these problems .