Diamond Rock () is a
[Tour Of The Caribbean – No Flint Grey and the Stone Ship]
(1925) ''Old and Sold Antiques Digest'' basalt
Basalt (; ) is an aphanite, aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the planetary surface, surface of a terrestrial ...
island located south of "Grande Anse du Diamant" before arriving from the south at
Fort-de-France
Fort-de-France (, , ; ) is a Communes of France, commune and the capital city of Martinique, an overseas department and region of France located in the Caribbean.
History
Before it was ceded to France by Spain in 1635, the area of Fort-de-Fra ...
, the main port of the
Caribbean
The Caribbean ( , ; ; ; ) is a region in the middle of the Americas centered around the Caribbean Sea in the Atlantic Ocean, North Atlantic Ocean, mostly overlapping with the West Indies. Bordered by North America to the north, Central America ...
island of
Martinique
Martinique ( ; or ; Kalinago language, Kalinago: or ) is an island in the Lesser Antilles of the West Indies, in the eastern Caribbean Sea. It was previously known as Iguanacaera which translates to iguana island in Carib language, Kariʼn ...
. The uninhabited island is about from Pointe Diamant.
The island gets its name from the reflections that its sides cast at certain hours of the day, which evoke images of a precious stone. It is notable for having been commissioned into the
Royal Navy
The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...
as the
stone frigate
A stone frigate is a naval establishment on land.
'Stone frigate' is an informal term which has its origin in Britain's Royal Navy (RN), after its use of Diamond Rock, an island off Martinique, as a 'sloop of war' to harass the First French ...
HMS ''Diamond Rock'' in February 1804 during the
Napoleonic Wars
{{Infobox military conflict
, conflict = Napoleonic Wars
, partof = the French Revolutionary and Napoleonic Wars
, image = Napoleonic Wars (revision).jpg
, caption = Left to right, top to bottom:Battl ...
. In mid-1805, a Franco-Spanish squadron captured the rock in the
Battle of Diamond Rock and held it until the British recaptured it in the
invasion of Martinique in 1809. Diamond Rock was returned to French control as part of a postwar trade of Martinique in 1815, and it remains part of Martinique.
HMS ''Diamond Rock''

Diamond Rock occupies a strategic position at the north end of the
Saint Lucia Channel. Possession of the rock permits interdiction of navigation between Martinique and its southern neighbour,
Saint Lucia
Saint Lucia is an island country of the West Indies in the eastern Caribbean. Part of the Windward Islands of the Lesser Antilles, it is located north/northeast of the island of Saint Vincent (Saint Vincent and the Grenadines), Saint Vincent ...
.
In September 1803
Commodore Sir Samuel Hood sailed to the rock aboard (Captain
Murray Maxwell). Hood had received the assignment to blockade the bays at
Fort Royal and
Saint Pierre, Martinique.
''Centaur'' was lying at anchor in Fort Royal Bay, Martinique, on the morning of 1 December when lookouts sighted a schooner with a sloop in tow about six miles off making for Saint Pierre. Hood sent his advice boat, ''Sarah'', after the sloop, and had Maxwell sail ''Centaur'' in pursuit of the schooner. After a pursuit of some , ''Centaur'' captured the schooner, which turned out to be the privateer ''Ma Sophie'', out of Guadeloupe. She had a crew of 45 men, and was armed with eight guns, which she had jettisoned during the chase.
Hood took ''Ma Sophie'' into service as a tender, charging her captain, Lieutenant William Donnett, with watching the channel between Diamond Rock and Martinique for enemy vessels. Donnett made frequent visits to the rock to gather the thick, broad-leaved grass to be woven into sailors' hats, and a spinach-like plant called
callaloo, that when boiled and served daily, kept the crews of ''Centaur'' and ''Ma Sophie'' from scurvy and was a nice addition to a menu too long dominated by salt beef.
Aided by calm weather, the British were able to run lines ashore and hoist two 18-pounder
cannon
A cannon is a large-caliber gun classified as a type of artillery, which usually launches a projectile using explosive chemical propellant. Gunpowder ("black powder") was the primary propellant before the invention of smokeless powder during th ...
s to the summit of the rock.
[The Diamond Rock Affair]
Genealogy of The Westcotts of Honiton The British hastily built fortifications and supplied the position with food and water for a garrison of two lieutenants and 120 men under the command of Lieutenant James Wilkes Maurice, Hood's first lieutenant
First lieutenant is a commissioned officer military rank in many armed forces; in some forces, it is an appointment.
The rank of lieutenant has different meanings in different military formations, but in most forces it is sub-divided into a se ...
. Hood officially commissioned the island as the " sloop" HMS ''Diamond Rock'' (a "stone frigate
A stone frigate is a naval establishment on land.
'Stone frigate' is an informal term which has its origin in Britain's Royal Navy (RN), after its use of Diamond Rock, an island off Martinique, as a 'sloop of war' to harass the First French ...
"). A six-gun sloop, designated , supported the fort. In honour of his admiral, Maurice designated as "Hood Battery" the one 24-pounder that he placed to fire from a cave halfway up the side of the rock. The British also placed two 24-pounder guns in batteries ("Centaur" and "Queen's") at the base of the rock, and a 24-pounder carronade
A carronade is a short, smoothbore, cast-iron cannon which was used by the Royal Navy. It was first produced by the Carron Company, an ironworks in Falkirk, Scotland, and was used from the last quarter of the 18th century to the mid-19th cen ...
to cover the only landing-place. One account puts two 24-pounders on the summit, but all other accounts put 18-pounders there. At some point during this, ''Ma Sophie'' exploded for unknown reasons, killing all but one of her crew.
With work complete by 7 February, Hood decided to formalise the administration of the island, and wrote to the Admiralty, announcing that he had commissioned the rock as a sloop-of-war, under the name ''Diamond Rock''. Lieutenant Maurice, who had impressed Hood with his efforts while establishing the position, was rewarded by being made commander.
While HMS ''Diamond Rock'' was in commission as a stone frigate
A stone frigate is a naval establishment on land.
'Stone frigate' is an informal term which has its origin in Britain's Royal Navy (RN), after its use of Diamond Rock, an island off Martinique, as a 'sloop of war' to harass the First French ...
, Royal Navy ships were required, when passing the island, to show due respect, personnel on the upper deck standing at attention and facing the rock whilst the bridge saluted. Caves on the rock served as sleeping quarters for the men; the officers used tents. A court martial would reprimand Lieutenant Roger Woolcombe at Plymouth
Plymouth ( ) is a port city status in the United Kingdom, city and unitary authority in Devon, South West England. It is located on Devon's south coast between the rivers River Plym, Plym and River Tamar, Tamar, about southwest of Exeter and ...
on 7 December 1805 for "conduct unbecoming a gentleman" for having mess
The mess (also called a mess deck aboard ships) is a designated area where military personnel socialize, eat and (in some cases) live. The term is also used to indicate the groups of military personnel who belong to separate messes, such as the o ...
ed (eaten) at the top of the rock with part of the ship's company. The sailors used pulleys and ropes to raise supplies to the summit. To augment their uncertain food supply, the garrison had a small herd of goats and a flock of guinea hens and chickens that survived on the meager foliage. The British also established a hospital in a cave at the base of the rock that became a popular place to put sailors and marines recovering from fevers or injuries.
Just before ''Centaur'' left the rock, a party of slaves made a clandestine visit to the rock at night to trade fruits and bananas. They brought the news that a French lieutenant colonel of engineers had arrived at their plantation to survey the heights opposite for a mortar battery with which to shell the rock. One of the slaves had been sold by his English owner to the French when the owner left the islands. He did not like his new master and claimed the protection of the British flag. Hood granted him that protection, and promised that the man could serve in the Royal Navy as a free man in return for guiding a landing party to his now-former master's house. A 23-man landing party, including the guide, and under Lieutenant Reynolds, landed at midnight, walked the four kilometers to the plantation house, and took the engineer and 17 soldiers prisoner, before returning safely to ''Centaur''. Apparently the lieutenant colonel was the only engineer on Martinique, and so no mortar battery materialized.
On 23 June 1804, whilst ''Fort Diamond'' was on a provisioning expedition at Roseau Bay, St. Lucia, a French boarding party from a schooner
A schooner ( ) is a type of sailing ship, sailing vessel defined by its Rig (sailing), rig: fore-and-aft rigged on all of two or more Mast (sailing), masts and, in the case of a two-masted schooner, the foremast generally being shorter than t ...
came up to her in two rowboats, boarding her at night while most of the crew were asleep below decks. A subsequent court-martial aboard at English Harbour
English Harbour is a natural harbour and settlement on the island of Antigua in the Caribbean, in the extreme south of the island. The settlement takes its name from the nearby harbour in which the Royal Navy established its base of operations fo ...
, Antigua
Antigua ( ; ), also known as Waladli or Wadadli by the local population, is an island in the Lesser Antilles. It is one of the Leeward Islands in the Caribbean region and the most populous island of the country of Antigua and Barbuda. Antigua ...
, convicted Acting Lieutenant Benjamin Westcott of allowing his vessel to be captured. The board dismissed him from the Royal Navy, never to be permitted to serve in the navy again.[ He became an American citizen three years later.
For 17 months, the fort was able to harass French shipping trying to enter Fort-de-France.][ The guns on the rock completely dominated the channel between it and the main island, and because of their elevation, were able to fire far out to sea. This forced vessels to give the rock a wide berth, with the result that the currents and strong winds would make it impossible for them to reach Fort Royal in a single tack, allowing them to be intercepted by the other blockading ships. During this time the French troops on Martinique made several unsuccessful attempts to retake the rock.
]
Napoleonic Wars
When Admiral Villeneuve embarked on his 1805 voyage to Martinique, he was under orders from Napoleon to recapture Diamond Rock. The French-Spanish combined naval force of 16 ships[The Trafalgar Campaign: The Atlantic and the West Indies]
Rickard, J. ''Military History Encyclopedia on the Web'' under French Captain Cosmao-Kerjulien attacked Diamond Rock. Between 16 May and 29 May, the French fleet completely blockaded the rock. On the 25th, the French were able to cut out from under Maurice's guns a British sloop that arrived from St. Lucia with some supplies.
The actual assault came on 31 May, and the French were able to land some troops on the rock. Maurice had anticipated the landing and had moved his men from the indefensible lower works to positions further up, and on the summit. Once the French landed, the British fire trapped the landing party in two caves near sea level.
Unfortunately for the garrison, their stone cistern
A cistern (; , ; ) is a waterproof receptacle for holding liquids, usually water. Cisterns are often built to catch and store rainwater. To prevent leakage, the interior of the cistern is often lined with hydraulic plaster.
Cisterns are disti ...
had cracked due to an earth tremor. This meant they were short of water and after exchanging fire with the French, they were also almost out of ammunition. After enduring a fierce bombardment, Maurice surrendered to the superior force on 3 June 1805,[ having resisted two French seventy-fours, a ]frigate
A frigate () is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied.
The name frigate in the 17th to early 18th centuries was given to any full-rigged ship built for speed and maneuvera ...
, a corvette
A corvette is a small warship. It is traditionally the smallest class of vessel considered to be a proper (or " rated") warship. The warship class above the corvette is that of the frigate, while the class below was historically that of the sloo ...
, a schooner
A schooner ( ) is a type of sailing ship, sailing vessel defined by its Rig (sailing), rig: fore-and-aft rigged on all of two or more Mast (sailing), masts and, in the case of a two-masted schooner, the foremast generally being shorter than t ...
, and eleven gunboats.[ The British lost two men killed and one wounded, and the French 20 dead and 40 wounded (English account), or 50 dead and wounded (French account), and three gunboats.
The French took the garrison of 107 men as prisoners, splitting them between their two 74-gun ships of the line, ''Pluton'' and the ex-British ''Berwick''. The French repatriated the prisoners to ]Barbados
Barbados, officially the Republic of Barbados, is an island country in the Atlantic Ocean. It is part of the Lesser Antilles of the West Indies and the easternmost island of the Caribbean region. It lies on the boundary of the South American ...
by 6 June. The subsequent court-martial
A court-martial (plural ''courts-martial'' or ''courts martial'', as "martial" is a postpositive adjective) is a military court or a trial conducted in such a court. A court-martial is empowered to determine the guilt of members of the arme ...
of Commander Maurice for the loss of his "ship" (i.e. the fort) exonerated him, his officers, and men and commended him for his defence.[ Maurice took dispatches to England, where he arrived on 3 August, and was given command of the brig-sloop .
The rock remained in French hands until 1809, when the British recaptured it in the invasion of Martinique.] When Martinique was traded back to France in 1815, Diamond Rock was included, and it has not traded hands since.
Battle of Diamond Rock in literature
There is a now-obscure poem of some forty four-line stanzas based on the incident, titled "The Diamond Rock".
The author "Sea Lion" (the pseudonym of Geoffrey Bennett, a career naval officer), based his 1950 novel ''The Diamond Rock'' on the 1804 event, as did Dudley Pope
Dudley Bernard Egerton Pope (29 December 1925 – 25 April 1997) was a British writer of both nautical fiction and history, most notable for his Lord Ramage series of historical novels. Greatly inspired by C.S. Forester, Pope was one of the m ...
in his 1976 novel ''Ramage's Diamond''.
A song called "The Island of Diamond Rock" released in January 2024, by Keyes, has the British classification of the island as a ship as its main subject.
Natural history
The rock is a volcanic plug
A volcanic plug, also called a volcanic neck or lava neck, is a volcano, volcanic object created when magma hardens within a Volcanic vent, vent on an active volcano. When present, a plug can cause an extreme build-up of high gas pressure if risi ...
, a remnant of the strong volcanic
A volcano is commonly defined as a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
On Earth, volcanoes are most often fo ...
activity that affected the region some one million years ago. However, a Captain Hansen of the Norwegian steamship ''Talisman'' reported that on 13 May 1902, he observed what he took to be a volcanic eruption from a hole in the rock. This was at the time of the devastating volcanic eruption of Mount Pelée
Mount Pelée or Mont Pelée ( ; , ; ), meaning "bald mountain" or "peeled mountain" in French, is an active volcano at the northern end of Martinique, an island and French overseas department in the Lesser Antilles Volcanic Arc of the Caribbean ...
that destroyed Saint Pierre. Hansen did not investigate further.
Like the other 47 islets that circle Martinique, the rock has its own ecological characteristics. It is sunnier than the main island, drier, and subject to a long seasonal dry period. Today it is covered in undergrowth and cacti.
Relatively inaccessible and inhospitable, the island is uninhabited, which has permitted it to remain a sanctuary for a species that had been believed to be extinct. A nature survey has suggested that Diamond Rock is probably the last refuge for a species of reptile
Reptiles, as commonly defined, are a group of tetrapods with an ectothermic metabolism and Amniotic egg, amniotic development. Living traditional reptiles comprise four Order (biology), orders: Testudines, Crocodilia, Squamata, and Rhynchocepha ...
once endemic to Martinique, the grass snake ('' Liophis cursor'').[État des lieux publié par la DIREN, p. 6-10]
Lire en ligne
. Consulté le 8 juin 2008. This snake was last seen on Martinique in 1962 and has not been encountered since then. It is now considered to be extinct.
Important Bird Area
The rock has been recognised as an Important Bird Area
An Important Bird and Biodiversity Area (IBA) is an area identified using an internationally agreed set of criteria as being globally important for the conservation of bird populations.
IBA was developed and sites are identified by BirdLife Int ...
(IBA) by BirdLife International
BirdLife International is a global partnership of non-governmental organizations that strives to conserve birds and their habitats. BirdLife International's priorities include preventing extinction of bird species, identifying and safeguarding i ...
because it supports breeding populations of brown boobies, brown noddies and bridled terns.
Diving around the island
Below water, the Diamond Rock cavern, a deep triangular cave
Caves or caverns are natural voids under the Earth's Planetary surface, surface. Caves often form by the weathering of rock and often extend deep underground. Exogene caves are smaller openings that extend a relatively short distance undergrou ...
, is a popular attraction for scuba divers. The cave is said to contain prolific quantities of beautiful sea fan
Alcyonacea is the old scientific order name for the informal group known as "soft corals". It is now an unaccepted name for class Octocorallia. It became deprecated .
The following text should be considered a historical, outdated way of treat ...
s and coral
Corals are colonial marine invertebrates within the subphylum Anthozoa of the phylum Cnidaria. They typically form compact Colony (biology), colonies of many identical individual polyp (zoology), polyps. Coral species include the important Coral ...
s, though strong currents make diving around the island a risky venture.
One of the rock's cannon that the French had toppled from the summit has been reported to have been found on a dive.
See also
* Ball's Pyramid
Ball's Pyramid is an uninhabited islet in the Pacific Ocean located southeast of Lord Howe Island, between Australia and New Zealand. The steep rocky basalt outcrop is the eroded plug of a shield volcano and caldera that formed 6.4million ye ...
* Black Rock, South Georgia
* Lot's Wife (crag)
* Redonda
Redonda is an List of uninhabited regions, uninhabited Caribbean island which is a dependency of Saint John, Antigua and Barbuda, in the Leeward Islands, West Indies. The island is about long, wide, and is high at its highest point.
It lie ...
* Rockall
Rockall () is a high, uninhabitable granite islet in the North Atlantic Ocean. It is west of Soay, St Kilda, Scotland; northwest of Tory Island, Ireland; and south of Iceland.
The nearest permanently inhabited place is North Uist, east in ...
* Shag Rocks (South Georgia)
Notes
Citations
References
*
*
* (This article has a detailed account of the fortifying of the rock, and two diagrams showing the placement of the cannons, the batteries, and the mechanics of raising the cannons to the summit. The author is probably John Donaldson Boswall, who served in the cutting out expedition that captured ''Curieux'', and went on to serve in her under George Edmund Byron Bettesworth).
*
*
* Eckstein, John (1805) ''Picturesque Views of the Diamond Rock taken on the spot and dedicated to Sir Samuel Hood, K.B., Commodore and Commander in Chief of His Majesty's Ships and Vessels employed in the Windward and Leeward Charibbee Islands''. (London: published for the author by J.C. Stadler).
*
*
*
* Southey, Thomas (1827) ''Chronological history of the West Indies''. Vol. 3. London: Longman, Rees, Orme, Brown, & Green.
*
* Stuart, Vivian & George T. Eggleston (1978). ''His Majesty's Sloop-of-war, Diamond Rock''. London: Hale. .
{{Authority control
Conflicts in 1805
Important Bird Areas of Martinique
Islands of Martinique
Landforms of Martinique
Seabird colonies
Stacks (geology)
Uninhabited islands of France
Volcanic plugs of North America