| Battle of Koh Chang | | Part of the French-Thai War (World War II) |
Battle map | | | | Combatants |
 Vichy France |
 Thailand | | Strength | 1 light cruiser
2 sloops of war
2 gunboats | 2 torpedo boats
1 coastal defense ship | | Casualties | | 1 light cruiser | 2 torpedo boats sunk
1 coastal defense ship heavily damaged | The Battle of Koh Chang took place on January 17, 1941 during the French-Thai War and resulted in a decisive victory by the French over the Thai Navy. Despite the fall of France in 1940 the Vichy government still held sway over France's colonial territories abroad. One of these territories was French Indochina, what we know today as Vietnam. With the defeat of mainland France obvious doubt was thrown over her ability to defend the far flung outposts of the empire. French Indochina held a particular attraction to her neighbour to the West, Thailand. Combatants Vichy France (first phase), Free France, British and Commonwealth nations (second phase) Thailand Commanders Jean Decoux Plaek Phibunsongkhram Strength 50,000(First Phase), 150,000 (Second Phase) 60,000(First Phase), 120,000 (Second Phase) Casualties 489 military (First Phase), 12,900+ military (Second Phase) 583 military (First Phase...
Combatants Allied powers: China France Great Britain Soviet Union United States and others Axis powers: Germany Italy Japan and others Commanders Chiang Kai-shek Charles de Gaulle Winston Churchill Joseph Stalin Franklin Roosevelt Adolf Hitler Benito Mussolini Hideki TÅjÅ Casualties Military dead: 17,000,000 Civilian dead: 33,000...
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January 16 is the 16th day of the year in the Gregorian calendar. ...
January 17 is the 17th day of the year in the Gregorian calendar. ...
For the movie, see 1941 (film). ...
The Gulf of Thailand is a gulf located in the South China Sea (Pacific Ocean), surrounded by the countries Malaysia, Thailand, Cambodia and Vietnam. ...
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Motto Travail, famille, patrie French: Work, family, fatherland Unoccupied zone of Vichy France (until November 1942) Capital Vichy Language(s) French Religion Roman Catholic Government Dictatorship Head of state - 1940 — 1944 Philippe Pétain President of the Council - 1940 — 1942 Philippe Pétain - 1942 - 1944 Pierre Laval Legislature National Assembly...
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Dutch coastal defence ship Hertog Hendrik Coastal defence ships (sometimes called coast-defence battleships) were warships built for the purpose of coastal defence, mostly in the period 1860-1920. ...
January 17 is the 17th day of the year in the Gregorian calendar. ...
For the movie, see 1941 (film). ...
Combatants Vichy France (first phase), Free France, British and Commonwealth nations (second phase) Thailand Commanders Jean Decoux Plaek Phibunsongkhram Strength 50,000(First Phase), 150,000 (Second Phase) 60,000(First Phase), 120,000 (Second Phase) Casualties 489 military (First Phase), 12,900+ military (Second Phase) 583 military (First Phase...
Thai Navy ensign Thai Navy jack The Royal Thai Navy is the navy of Thailand. ...
Vichy France (French: now called Régime de Vichy or Vichy; called itself at the time État Français, or French State) was the French state of 1940-1944 which was a puppet government under Nazi influence, as opposed to the Free French Forces, based first in London and later...
French Indochina (French: LIndochine française, Vietnamese: Äông DÆ°Æ¡ng thuá»™c Pháp) was the part of the French colonial empire in Indochina in southeast Asia, consisting of a federation of protectorates (Tonkin and Annam, which now form Vietnam, as well as Cambodia and Laos) and one directly...
During the war years, one of the aims of the Siam (Thai) military government of that time was to promote patriotism among Thai people. The sentiment of the day was to reclaim the former Siam’s lands in Indochina (Laos, Cambodia and Vietnam). These lands once belonged to Siam, before they were being aggressively pursued by a series of forced annexations by French Colonialism in years between 1867-1906, under the reign of King Chulalongkorn . The defeat of France by the Nazi military stimulated Thai military government to start the plan of getting back the lost territories. From 1768 to 1932 the area of modern Thailand was dominated by Siam, an absolute monarchy with capitals briefly at Thonburi and later at Rattanakosin, both in modern-day Bangkok. ...
His Majesty King Rama V of Siam, with his son, later King Rama VI (portrait in National History Museum, Bangkok) King Chulalongkorn the Great or Rama V (royal name Phra Chula Chomklao Chaoyuhua) (September 20, 1853 - October 23, 1910) was the fifth king of the Chakri dynasty of Thailand. ...
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In late 1940 the Thais began a series of raids by troops and aircraft against the French possessions, aimed at annexing those parts of French Indochina which the French were unable to hold on to. These attacks tended to concentrate in the coastal regions of Cambodia, to the west of Saigon. The Thais naturally saw themselves as filling a power vacuum which had been created by deflating French colonial interests. The French, however, had other ideas and a state of war was assumed between Vichy France and Thailand (then still often referred to as Siam). Since the main thrust of the Thai assaults had been along the coast the French considered a naval operation against the invaders, although there was grave concern over strengths of the Thai armed forces which would oppose such a mission. Ho Chi Minh City (Vietnamese: Thà nh Chà Minh) is the largest city in Vietnam, located near the delta of the Mekong River. ...
Thai Navy
The Royal Thai Navy could in no way be regarded as a pushover. A number of new vessels had recently been delivered from Japan and Italy. The major units of the fleet included two Japanese-built armoured coast defence vessels which displaced 2,500 tons and carried 8" guns, two older British built armoured gunboats with 6" guns, twelve torpedo boats and four submarines. In addition the Royal Thai Air Force had in its inventory over 140 aircraft, including relatively modem Mitsubishi Ki-30 light bombers, which saw extensive service against the French. These aircraft in themselves were quite capable of causing severe damage to any French naval mission which may be mounted. Other less capable aircraft in the Thai inventory included P-36 Hawk fighters, 70 Chance-Vought O2U-2 Corsair biplanes, 6 Martin B-10 bombers and several Avro 504 trainers. Thai Navy ensign Thai Navy jack The Royal Thai Navy (Thai: ) is the navy of Thailand and was established in the late 1800s. ...
Dutch coastal defence ship Hertog Hendrik Coastal defence ships (sometimes called coast-defence battleships) were warships built for the purpose of coastal defence, mostly in the period 1860-1920. ...
The Royal Thai Air Force (Thai: à¸à¸à¸‡à¸—ัพà¸à¸²à¸à¸²à¸¨à¹„ทย, Kong Thab Akat Thai) is the air force of the Kingdom of Thailand. ...
The Mitsubishi Ki-30 was a Japanese light bomber aircraft of World War II. It was a single-engine, mid-wing, cantilever monoplane with a fixed tailwheel undercarriage. ...
A light bomber is a military bomber aircraft which, when compared to other bombers, is relatively small and fast; such aircraft will probably not carry more than one ton of ordnance. ...
The Curtiss P-36 Hawk, also know as Curtiss Hawk Model 75, was a U.S.-built fighter aircraft of the 1930s. ...
A B-10 being flown during a training session at Maxwell Field. ...
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Initial French moves Despite the strengths of the Thai forces the French Governor General of Indochina and Commander-in-Chief Naval Forces, Admiral Jean Decoux, decided that the naval mission should go ahead. A small squadron, the Groupe Occasionnel, was formed on 9th December 1940 at Cam Ranh Bay, near Saigon, under the command of Capitaine de Vaisseau Régis Bérenger. The squadron consisted of the light cruiser Lamotte-Piquet, the colonial sloops Dumont d'Urville and Amiral Charner, and the older sloops Tahure and Marne. There was no air cover to speak of, apart from eight Loire 130 seaplanes based at Ream which provided reconnaissance. Additional scouting was provided by three coastal survey craft, and intelligence gleaned from the local fishermen. Image File history File links No higher resolution available. ...
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The Lamotte-Piquet was a French Duguay-Trouin class light cruiser, launched in 1924. ...
Image File history File links Size of this preview: 800 × 356 pixels Full resolution (873 × 389 pixel, file size: 81 KB, MIME type: image/jpeg) Aviso colonial, livret ONI203 pour lidentification des navires de la marine française, édité par la Division du Renseignement Naval du Départment de...
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Jean Decoux (1884, Bordeaux - October 21, 1963, Paris) was the governor of French Indochina from 1940 to 1945, representing the Vichy government. ...
Cam Ranh Bay is a deep-water seaport in Vietnam in the province of Khanh Hoa. ...
The rank insignia of the French Navy are worn on epaulettes of shirts and white jackets, and on sleeves for navy jackets and mantels. ...
The Lamotte-Piquet was a French Duguay-Trouin class light cruiser, launched in 1924. ...
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Bérenger's squadron began training manoeuvres in Cam Ranh Bay shortly after coming together. Early in the new year, on January 13th 1941, Admiral Decoux formally requested Bérenger to send the squadron against the Thais to act in support of a land offensive planned for the 16th. This operation was intended to throw back Thai forces which had been advancing along the coast. Because of the disparate speeds of the French ships Bérenger sent the slower sloops on ahead, whilst he remained in Saigon to complete the final elements of the plan. Several options were currently being prepared, the Admiralty in Paris having recently given its formal blessing to the use of naval forces in support of the army. The final planning meeting of the 13th saw an immediate delay in the execution of the operation for 24 hours. With the plans finalised, Bérenger sailed in Lamotte-Picquet, the delay in the start of the operation allowing him to refuel at Cap St. Jacques before the rendezvous with the slower ships at 16:00 on the 15th, 20 miles North of Poulo Condore. Ho Chi Minh City (Vietnamese: Thà nh Chà Minh) is the largest city in Vietnam, located near the delta of the Mekong River. ...
City flag City coat of arms Motto: Fluctuat nec mergitur (Latin: Tossed by the waves, she does not sink) Paris Eiffel tower as seen from the esplanade du Trocadéro. ...
An arial view of the main island The Con Dao Islands or Con Son Islands (Vietnamese Côn Äảo or Côn SÆ¡n) are an archipelago of Ba Ria-Vung Tau Province, in southeastern Vietnam, and a district of this province. ...
The orders from Admiral Decoux were clear and simple, "Attack the Siamese coastal city from Rayong to the Cambodian frontier to force Siamese government to retreat the arms force form Cambodian frontier". On the evening of the 15th, following a final conference on board the flagship, the squadron weighed anchor at 21 15 and closed the Thai coast at 14 knots, the best speed of the sloops. The French ships remained undetected as they entered the Gulf of Siam, but their quarry was not so lucky. The Loire 130s from Ream had completed a sweep of the coast from Trat to Satahib. They had located one coast defence ship and two torpedo boats at Koh Chang, and one gunboat, four torpedo boats and two submarines at Satahib. Their report was sent to Marine Headquarters in Saigon, who retransmitted the report to the Lamotte-Picquet. Bérenger considered his options in the light of this intelligence and opted for a dawn attack on Koh Chang. He discounted an attack on Sattahib because it was not possible for the sloops to reach the port until later in the day, by which time the Thai force was likely to have been alerted to the French presence and the element of surprise would be lost. In addition there was doubt as to the contribution which the harbour defences at Satahib could make. Finally the force at Koh Chang, although formidable, was the weaker of the two and was thought to offer the best chance for victory. The Gulf of Thailand is a gulf located in the South China Sea (Pacific Ocean), surrounded by the countries Malaysia, Thailand, Cambodia and Vietnam. ...
Trat is a town in Thailand, capital of the Trat province. ...
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Bérenger's plan of attack was as follows. The squadron would approach at dawn from the South West. Because the anchorage at Koh Chang was surrounded by islands and islets, many of which were over 200 metres high, the squadron would break up and use the cover of the islands to concentrate fire on portions of the Thai squadron whilst covering all the avenues of escape. The easternmost channel was regarded as the most likely route by which a breakout would be made - this was the most suitable route and was also the area in which the recce report had placed the largest Thai ships. The Lamotte-Picquet would head to the eastern side of the anchorage to block this route whilst the colonial sloops blocked the centre and pounded the Thai ships there. The smaller French ships would concentrate to the West.
Attack The French squadron closed on the anchorage at 05:30 on the 17th. At 05:45 they split into the three groups as planned, the Lamotte-Picquet heading for the Eastern part of the anchorage, Dumont d'Urville and Amiral Charner continuing to the central position and the Tahure and Marne heading for the Western side. Conditions were perfect - the weather was fine, the seas calm and almost flat. Sunrise was due at 06:30, and the scene was lit only by the first rays of light on the horizon and by the dim moonlight. A final aerial reconnaissance of the target area had been arranged using one of the Ream-based Loire 130s (Lamotte-Picquet carried two such aircraft, but these could not be launched due to catapult problems). At 06:05 the Loire 130 overflew the anchorage and reported two torpedo ships. This came as a nasty surprise to the French - previous reports led them to believe that only one of the torpedo boat was present, but during the night the Chonburi had arrived to relieve the Chantaburi, which was to return to Satahib later that day for repairing. Once their presence had been passed to the Lamotte-Picquet the aircraft attempted an attack of its own using bombs, but was forced off by a heavy barrage of AA fire. The effect of this mission was double edged - the French were now aware that they faced both the Thai units, but the element of surprise had been wasted and there was still thirty minutes to go until sunrise. Caught napping by the oncoming French the Thais desperately began to raise steam and make preparations for slipping their anchors. but the torpedo boats were sunk by gunfire from the Lamotte-Picquet.
At 06:38 the lookouts on the Lamotte-Picquet spotted the coastal defence ship, the Dhonburi, at a range of 10,000 metres heading to the northwest. A running battle ensued with the fire of both ships frequently blocked by the towering islets. The fire from the Thai ship was heavy, but inaccurate. By 07:15 fires could be seen on the Dhonburi, which then found herself engaged not only by the cruiser but also by the sloops. In the beginning of the engagement, a lucky shot from the Lamotte-Picquet killed the captain of the Dhonburi and disrupted her operations. Believing they had a better chance of hurting the smaller French ships the Thais shifted their fire onto the Amiral Charner, which soon found 8" salvoes falling around her. The Dhonburi shifted fire back to Lamotte-Picquet after a salvo from the French cruiser put her after turret out of action. Soon she reached the safety of shallow water which the French ships could not enter for fear of grounding, but it all came too late for the hapless Thais as the Dhonburi was burning fiercely and listing heavily to starboard. Her remaining turret was manned and hand and could not fire unless the manoeuvers of the ship put it in appropriate position. At 07:50 the Lamotte-Picquet fired a final salvo of torpedoes at a range of 15,000 metres but lost sight of the Dhonburi behind an island from which she was not seen to emerge.
For the next hour the French ships patrolled the area, picking up survivors and ensuring their victory was total. At 08:40 Bérenger ordered the squadron to head for home, but this coincided with the start of the expected Thai air attacks. Several bombs were dropped close to the Lamotte-Picquet and one hit was scored, although the bomb failed to explode (see below). A vigorous barrage was put up by the ship's AA guns and further attacks were not pressed home. The final raid departed at 09:40, following which the victorious French squadron returned to Saigon.
Aftermath The French left behind them a scene of total devastation. The Dhonburi was heavily damaged and hard aground on a sand bar in the mouth of the Chantaboun river. She was later raised and repaired by the Japanese, survived the war and was used as a training ship until she was retired. The Thai transport Chang arrived at Koh Chang shortly after the French departed and took the Dhonburi in tow . The torpedo boats Chonburi and Songhkla had both been sunk. The only survivors were rescued by the torpedo boat Rayong, the minelayer Nhong Sarhai and the fishery protection vessel Thiew Uthok. These three ships, which had been sheltering to the north of Koh Chang, wisely chose not to break cover and thus were not observed by the French. At a stroke the cream of the Royal Thai Navy (except the four submarines) had been wiped out. The French were elated, for they had inflicted a defeat as decisive in its way as the Japanese at Tsushima. Their success is all the more notable when the difficulties of navigating and fighting in such confined waters are considered, and given the courage and tenacity which the Thai sailors exhibited during the action (a fact which the French were gracious to accept). In the end though it was all for nought - five days later the Japanese government offered to 'arbitrate' in the search for a peaceful settlement, and soon confirmed the Thai annexations. Even this state of affairs did not last for long, as Thailand was invaded later that year during the attacks on Malaya, and was forced to return her short-lived gains to France at the end of WW2. Image File history File linksMetadata Size of this preview: 332 × 599 pixels Full resolution (463 × 835 pixel, file size: 165 KB, MIME type: image/jpeg) Own work/Photo personnelle. ...
Image File history File linksMetadata Size of this preview: 332 × 599 pixels Full resolution (463 × 835 pixel, file size: 165 KB, MIME type: image/jpeg) Own work/Photo personnelle. ...
Combatants Empire of Japan Russian Empire Commanders Heihachiro Togo Zinovi Rozhdestvenski # Nikolai Nebogatov Strength 4 battleships 27 cruisers destroyers and auxiliary vessels 8 battleships 3 coastal battleships 8 cruisers Casualties 117 dead 583 injured 3 torpedo boats sunk 4,380 dead 5,917 captured 21 ships sunk 7 captured 6...
HTMS Thonburi was later raised by Royal Thai Navy. She was repaired in Japan and was used as a Training ship until she was decommissioned. Her gun and deck are placed as a memorial in the Royal Thai Naval Academy, Samutphargarn.
During the post-action investigations it was claimed, on the evidence of sailors and the fisherman around Koh Chang, that heavy damage was seen to have been caused to Lamotte-Picquet and her fleet. The report claims that the crew of Lamotte-Picquet spent all of the following night repairing the damage.
The Royal Thai Air Force launched an air strike on the French battle group after the battle. Corpral Chamraj Moungpaseart (who ended his career as a Wing Commander) flew Corsair V 93 S and dropped one 50kg. bomb on Lamotte-Picquet but the bomb failed to explode.
References - J. Guiglini (trans. K Macpherson) 'A resume of the Battle of Koh Chang' Warship International 1990 No.2
- Romé, Contre-Amiral Paul, Les oubliés du bout du monde: Journal d'un marin d'Indochine de 1939-1941 1998. Danclau, Dinard, France
- (French) La bataille de Koh Chang, netmarine.net
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