Operation Frankton

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Operation Frankton
Part of Western Front
Date7–12 December 1942
Bordeaux, France
Result British victory
 United Kingdom Nazi Germany Germany
Commanders and leaders
United Kingdom Major Herbert Hasler Nazi Germany Admiral Julius Bachmann
13 men
6 kayaks ('Cockle' mark 2)
4 Frigates
2 Naval trawlers
12 E Boats
12 Patrol boats
6 M-class minesweepers
Casualties and losses
6 men captured & executed
2 died from hypothermia[1]
6 ships sunk

Operation Frankton was a British Commando raid on ships in the German occupied French port of Bordeaux in southwest France during the Second World War. The raid was carried out by a small unit of ten Royal Marine Commandos, from the Royal Marines Boom Patrol Detachment (RMBPD), part of Combined Operations. They were inserted in the Bay of Biscay in five two-man canoes by submarine HMS Tuna, captained by Lieutenant-Commander Dick Raikes who, earlier, had been awarded the DSO for operations while in command of the submarine HMS Seawolf (47S). (The RMBPD would later form the Special Boat Service.)

The plan was for six folding kayaks codenamed Catfish, Crayfish, Cachalot, Conger, Cuttlefish, and Coalfish to be launched from a submarine in the Bay of Biscay, off the coast of German-occupied France. Twelve Royal Marine Commandos would then use the kayaks to paddle 90 miles up the Gironde Estuary by night, to the port of Bordeaux. On arrival they would infiltrate the port and sabotage the docked cargo ships with limpet mines and then escape overland to Spain. Men from no.1 section were selected for the raid; including the commanding officer, Herbert 'Blondie' Hasler, and with the reserve Marine Colley the team numbered thirteen in total.

Upon arriving and surfacing in the Bay of Biscay, trouble struck almost immediately as Cachelot was damaged while being deployed from the submarine, and it and its crew therefore could not take part in the mission. Because of the harsh winter conditions and pitch black darkness, Coalfish went missing shortly after being launched, and Conger capsized due to the strong winds and 1.5m waves. Catfish, Crayfish, and Cuttlefish continued onwards and managed to slip passed four German frigates that were guarding the entrance to the river, and paddled 20 miles up the estuary until they came ashore and hid during the following day. When Catfish and Crayfish regrouped to set sail the following evening, Cuttlefish was absent as its crew had been discovered and captured.

After five nights of paddling for 90 miles, the two remaining Kayaks Catfish and Crayfish arrived at the port in Bordeaux, and the Commandos successfully planted sixteen limpet mines onto six ships that were docked in the port, severely damaging all of them. Although the operation was a success, it came at a huge cost as only two of the ten commandos who launched from the submarine survived the raid, and escaped to neutral Spain: Major Herbert Hasler, and his number two in the kayak, Bill Sparks. Of the other eight, six were captured and executed by the Germans, and two died from hypothermia. British Commando raids during the Second World War such as Operation Frankton forced the Germans to relocate large numbers of troops from the frontlines to guard ports, naval bases and airfields from the threat of Commando raids. British Prime Minister Winston Churchill believed that Operation Frankton shortened the war by six months.


twotwoman kayaks at sea
Cockles MK II

The Royal Marines Boom Patrol Detachment (RMBPD) was formed on 6 July 1942, and based at Southsea, Portsmouth.[2] The RMBPD was under the command of Royal Marines Major Herbert 'Blondie' Hasler with Captain J. D. Stewart as second in command.[2] The detachment consisted of 34 men and was based at Lumps Fort, and often exercised in the Portsmouth Harbour and patrolled the harbour boom at nights.[2][3] On 13 August 1942, Hasler and Stewart visited HMS Tormentor to attend a demonstration of fast motorboat training, in preparation for the operation.[4]

The Bay of Biscay port of Bordeaux was a major destination for goods to support the German war effort. In the 12 months from June 1941 – 1942 vegetable and animal oils, other raw materials, and 25,000 tons of crude rubber had arrived at the port.[5] Hasler submitted a plan of attack on 21 September 1942. The initial plan called for a force of three kayaks to be transported to the Gironde estuary by submarine then paddle by night and hide by day until they reached Bordeaux 60 miles (97 km) from the sea,[6] thus hoping to avoid the 32 mixed Kriegsmarine ships that patrolled or used the port. On arrival they hoped to sink between six and 12 cargo ships then escape overland to Spain.[6]

Permission for the raid was granted on 13 October 1942, but Admiral Louis Mountbatten Chief of Combined operations increased the number of kayaks to be taken to six. Mountbatten had originally ordered that Hasler could not take part in the raid, because of his experience as the chief kayaking specialist, but changed his mind after Hasler (the only man with experience in small boats) formally submitted his reasons for inclusion.[6] The RMBPD started training for the raid on 20 October 1942, which included kayak handling, submarine rehearsals, limpet mine handling and escape and evasion exercises.[6] The RMBPD practised for the raid with a simulated attack against Deptford, starting from Margate and kayaking up the Swale.[7]

Mark II kayaks, which were given the codename of Cockle,[8] were selected for the raid.[9] The Mark II was a semi rigid two-man kayak, with the sides made of canvas, a flat bottom, and 15 feet (4.6 m) in length. When collapsed it had to be capable of negotiating the narrow confines of the submarine to the storage area, and then, before it was ready to be taken on deck, erected and stored ready to be hauled out via the submarine torpedo hatch.[10] During the raid each kayak's load would be two men, eight limpet mines, three sets of paddles, a compass, a depth sounding reel, repair bag, torch, camouflage net, waterproof watch, fishing line, two hand grenades, rations and water for six days, a spanner to activate the mines and a magnet to hold the kayak against the side of cargo ships. The total safe load for the 'Cockle' Mark 2 was 480 lb (220 kg).[10] The men also carried a .45 1911 Colt semi-automatic pistol and a Fairbairn–Sykes fighting knife.[7]

The men selected to go on the raid were divided into two divisions, each having their own targets.

  • A Division
Hasler and Marine Bill Sparks in kayak Catfish.
Corporal Albert Laver and Marine William Mills in kayak Crayfish.
Corporal George Sheard and Marine David Moffatt in kayak Conger.[7]
  • B Division
Lieutenant John Mackinnon and Marine James Conway in kayak Cuttlefish.
Sergeant Samual Wallace and Marine Robert Ewart in kayak Coalfish.
Marine W. A. Ellery and Marine E. Fisher in kayak Cachalot.[7]

A thirteenth man was taken as a reserve, Marine Norman Colley.[7]



On 30 November 1942 under the command of Lieutenant-Commander Dick Raikes DSO the Royal Navy submarine HMS Tuna (N94) sailed from Holy Loch in Scotland with the six kayaks and raiders on board.[7] The submarine was supposed to reach the Gironde estuary and the mission was scheduled to start on 6 December 1942. This was delayed because of bad weather en route and the need to negotiate a minefield.[11] By 7 December 1942 the submarine had reached the Gironde estuary and surfaced some 10 miles (16 km) from the mouth of the estuary. Cachalot's hull was damaged while being passed out of the submarine hatch, leaving just five kayaks to start the raid. The reserve member of the team, Colley, was not needed, so he remained aboard the submarine with the Cachalot crew Ellery and Fisher.[7]

According to Tuna's log the five remaining kayaks were disembarked at 1930 hours on 7 December. However sources differ on the start time between 1936 and 2022.[12][13] The plan was for the crews to paddle, resting for five minutes in every hour.[14] The first night, 7/8 December, fighting against strong cross tides and cross winds, Coalfish had disappeared. Further on the surviving crews encountered 5 feet (1.5 m) high waves and Conger capsized and was scuttled, once it became apparent that it would not be possible to bail it out. The crew consisting of Sheard and Moffatt held on to two of the remaining kayaks, which carried them as close to the shore as possible, and they then had to try and swim ashore.[15] They met the missing Coalfish shortly afterwards and continued.

Carrying on with the raid, the remaining kayaks approached a major checkpoint in the river and came upon three German frigates. Lying flat on the kayaks and paddling silently they managed to get by without being discovered but Mackinnon and Conway in Cuttlefish became separated from the other kayaks in the group.[16] After having been set ashore, MacKinnon and Conway managed to evade capture for four days, but they were betrayed and arrested by the Gendarmerie and handed over to the Germans at La Reole hospital 30 miles (48 km) southeast of Bordeaux, attempting to make their way to the Spanish border.

On the first night the three remaining kayaks, Catfish, Crayfish and Coalfish, covered 20 miles (32 km) in five hours and landed near St Vivien du Medoc.[3][15] While they were hiding during the day and unknown to the others, Wallace and Ewart in Coalfish had been captured at daybreak near the Pointe de Grave lighthouse where they had come ashore.[3][17]

By the end of the second night, 8/9 December, the two remaining kayaks Catfish and Crayfish had paddled a further 22 miles (35 km) in six hours.[18] The third night, 9/10 December, they paddled 15 miles (24 km) and on the fourth night, 10/11 December, because of the strong ebb tide they only managed to cover 9 miles (14 km).[15] The original plan had called for the raid to be carried out on 10 December, but Hasler now changed the plan. Because of the strength of the ebb tide they still had a short distance to paddle, so Hasler ordered they hide for another day and set off to and reach Bordeaux on the night of 11/12 December.[15] After a night's rest, the men spent the day preparing their equipment and limpet mines which were set to detonate at 21:00[citation needed] hours. Hasler decided that Catfish would cover the western side of the docks and Crayfish the eastern side.[19]


The two remaining kayaks, Catfish and Crayfish, reached Bordeaux on the fifth night, 11/12 December; the river was flat calm and there was a clear sky. The attack started at 21:00 hours 11 December, Hasler and Sparks in Catfish attacking shipping on the western side of the dock, placed eight limpet mines on four vessels including a Sperrbrecher patrol boat. A sentry on the deck of the Sperrbrecher, apparently spotting something, shone his torch down toward the water, but the camouflaged kayak evaded detection in the darkness. They had planted all their mines and left the harbour with the ebb tide at 00:45 hours.[15][19] At the same time Laver and Mills in Crayfish had reached the eastern side of the dock without finding any targets, so returned to deal with the ships docked at Bassens. They placed eight limpet mines on two vessels, five on a large cargo ship and three on a small liner.[19]

On their way downriver the two kayaks met by chance on the île Cazeau. They continued down river together until 06:00 hours when they beached their kayaks near St Genes de Blaye and tried to hide them by sinking them.[18] The two crews then set out separately, on foot, for the Spanish border.[19] After two days Laver and Mills were apprehended at Montlieu-la-Garde by the Gendarmerie and handed over to the Germans.[18]

On 10 December, the Germans announced that a sabotage squad had been caught on 8 December near the mouth of the Gironde and "finished off in combat". It was not until January 1943 in the absence of other information that all 10 men on the raid were posted missing, until news arrived of two of them. Later it was confirmed that five ships had been damaged in Bordeaux by mysterious explosions.[19] New research in 2010 revealed that a sixth ship had been damaged even more extensively than any of the other five reported, which were quickly repaired and put back into service.[20]

Hasler and Sparks arrived at the French town of Ruffec, 100 miles (160 km) from where they had beached their kayak, on 18 December 1942.[21] They made contact with escape line leader Mary Lindell and her son, Maurice, at the Hotel de la Toque Blanche and were then taken to a local farm. They spent the next 18 days[22] there in hiding. Lindell arranged for them to be guided on foot across the Pyrenees into Spain and safety.[18]


Monument commemorating Operation Frankton in Saint-Georges-de-Didonne, near Royan.

It was not until 23 February 1943 that Combined Operations Headquarters heard via a secret message sent by Mary Lindell to the War Office[23] that Hasler and Sparks were safe. On 2 April 1943 Hasler arrived back in Britain by air from Gibraltar, having passed through the French Resistance escape organisation. Sparks was sent back by sea and arrived much later.[24]

For their part in the raid Hasler was awarded a Distinguished Service Order and Sparks the Distinguished Service Medal (DSM).[25] Laver and Mills were also recommended for the DSM which at the time could not be awarded posthumously, so instead they were mentioned in despatches.[26]

Wallace and Ewart revealed only certain information during their interrogation,[27] and were executed under the Commando Order, on the night of 11 December,[28] in a sandpit in a wood north of Bordeaux, and not at Chateau Magnol, Blanquefort, as is sometimes claimed. A plaque has been erected on the bullet-marked wall at the Chateau, but the authenticity of the details on the plaque has been questioned; indeed given the evidence of a statement by a German officer who was at the execution it is certain that the chateau has no link with Wallace and Ewart.[29] A small memorial can also be seen at the Pointe de Grave, where they were captured. In March 2011 a €100,000 memorial was unveiled at this same spot.[30] After the Royal Marines were executed by a naval firing squad, the Commander of the Navy Admiral Erich Raeder wrote in the Seekriegsleitung war diary that the executions of the captured Royal Marines were something "new in international law, since the soldiers were wearing uniforms".[31] The American historian Charles Thomas wrote that Raeder's remarks about the executions in the Seekriegsleitung war diary seemed to be some sort of ironic comment, which might have reflected a bad conscience on Raeder's part.[32]

Mackinnon had been admitted to the hospital for treatment for an infected knee.[3] Evidence shows that Laver, Mills, Mackinnon and Conway were not executed in Paris in 1942 but possibly in the same location as Wallace and Ewart under the Commando Order. The exact date of their execution is not known.[3]

Sheard and Moffatt from the capsized Conger were not drowned on the first night but died of hypothermia.[33] The body of Moffatt was found on the Île de Ré on 14 December but Sheard's body is believed to have been recovered and buried elsewhere further up the coastline.[34] Sheard is remembered on the Hero's Stone at his place of birth, North Corner, Devonport.[35]


The words of Lord Mountbatten, the commander of Combined Operations, are carved into a Purbeck stone at Royal Marines Poole (current headquarters of the SBS): "Of the many brave and dashing raids carried out by the men of Combined Operations Command none was more courageous or imaginative than Operation Frankton".[36]

Mackinnon is commemorated on the Portsmouth Naval Memorial.[37]

The bravery of the 'Cockleshell Hero' Royal Marine James Conway was honoured with a permanent memorial unveiled on Sunday 10 December 2017 in his home town of Stockport.[38]

Laver,[39] Sheard,[40] Mills,[41] Conway,[42] Wallace,[43] Moffatt,[44] and Ewart are commemorated on the Plymouth Naval Memorial.[45]

Operation Frankton was described as 'This brilliant little operation carried through with great determinism and courage..." by Louis Mountbatten[46]

In June 2002, the Frankton Trail was opened, a walking path which traces the 100 miles (160 km) route taken through occupied France, on foot, by Hasler and Sparks. The Frankton Souvenir is an Anglo-French organisation, set up to keep alive the story of the raid. It plans to develop the trail, and install explanatory plaques at key points.[3]

On 31 March 2011 a memorial to the Cockleshell Heroes and three French individuals was dedicated. Made from Portland Stone it was transported across care of Brittany Ferries. The memorial cost about £80,000 (equivalent to £103,722 in 2021).[47]

The only known surviving Cockle Mark II kayak from Operation Frankton, Cachalot, together with other original equipment, can be seen at the Combined Military Services Museum, located in Maldon, Essex.[48]

In France : The memory of the heroes of Operation Frankton is commemorated every year, notably in Bordeaux, Blanquefort, Saint-Georges-de-Didonne and Ruffec.

Commemorative plaques have been placed in the Entre-deux-Mers region in Baigneaux and Cessac. Unfortunately, the one in Cessac, located on the edge of a bicycle path, in view of the Jaubert farmhouse, has been vandalized. In 2011, as part of a project to move the monument to the dead of the 1914-1918 war, the municipality proposes to place a second plaque against the wall of the town hall, at the new location of the commemorations. A monument is also present on the town of Montalivet-les-Bains, facing the sea.

A tramway station on line C of the TBM network, located in the town of Blanquefort, is named Frankton.


In 1955 a heavily fictionalised version of the story was depicted in the film The Cockleshell Heroes made by Warwick Films, and starring Anthony Newley, Trevor Howard, Christopher Lee, Victor Maddern, David Lodge and Jose Ferrer who was also the director. The film was a box office hit in 1956 and was quickly followed by the publication of Brigadier C. E. Lucas Phillips' book of the same name. 'Blondie' Hasler had connections with both the film and the book. He hated the title of both and walked away from his role as technical adviser for the former to try and set the matter right in the latter.[49][50]

On 1 November 2011, a BBC Timewatch television documentary called "The Most Courageous Raid of WWII" was narrated by Paddy Ashdown, a former SBS officer.[51] Ashdown describes Frankton as "a Whitehall cock-up of major proportions" due to a simultaneous mission to sink the ships in Bordeaux, led by Claude de Baissac of the Special Operations Executive, which Hasler's team and Combined Operations knew nothing about because of the secrecy and lack of co-operation among British government agencies. De Baissac was preparing to take explosives onto the ships when he heard the explosions of Hasler's limpet mines. The loss of the opportunity for Hasler and de Baissac to work together to strike a harder blow against the Germans in a combined operation led to the setting up of a Controlling Officer at Whitehall, responsible for avoiding inter-departmental rivalry, duplication or even conflict.[52]


  1. ^ Rees 2011, p. 179.
  2. ^ a b c Rees 2008, p. 25.
  3. ^ a b c d e f "Operation Frankton". Royal Marines. Archived from the original on 8 September 2008. Retrieved 13 May 2010.
  4. ^ Oldfield, Paul (2013). Cockleshell Raid. Pen&Sword Military. p. 30. ISBN 9781781592557.
  5. ^ Rees 2008, p. 74.
  6. ^ a b c d Rees 2008, p. 75.
  7. ^ a b c d e f g Rees 2008, p. 76.
  8. ^ BBC Hampshire staff (9 December 2008). "Hayling Island's secret kayaks author Quentin Rees' interview about kayaks and book". BBC.
  9. ^ Rees 2008, p. 81.
  10. ^ a b Rees 2011.
  11. ^ Cohen 2005, p. 93.
  12. ^ Southby-Tailyour 1998, p. 103.
  13. ^ Ashdown 2012, p. 150.
  14. ^ Rees 2011, p. 65.
  15. ^ a b c d e Rees 2011, p. 71.
  16. ^ Cohen 2005, p. 94.
  17. ^ Rees 2008, p. 79.
  18. ^ a b c d Rees 2008, p. 78.
  19. ^ a b c d e "Operation Frankton". Combined Operations. Retrieved 13 May 2010.
  20. ^ Rees 2011, p. 142ff with additional info in the 2011 edition.
  21. ^ Rees 2011, p. 129.
  22. ^ Rees 2011, pp. 134–138.
  23. ^ Rees 2011, p. 141.
  24. ^ Rees 2011, p. 121.
  25. ^ "No. 36072". The London Gazette (Supplement). 29 June 1943. p. 2946.
  26. ^ Rees 2008, p. 80.
  27. ^ Rees 2011, pp. 93–96.
  28. ^ Rees 2011, p. 119.
  29. ^ Rees 2011, pp. 96–98, 120.
  30. ^ Rees 2011, pp. 297–298.
  31. ^ Bird 2006, p. 201.
  32. ^ Thomas 1990, pp. 212–213.
  33. ^ Rees 2011, pp. 117–119.
  34. ^ Rees 2011, pp. 93–120.
  35. ^ "Heroine attends Remembrance Ceremony". Devonport Online.co.uk. 11 November 2009.
  36. ^ Southby-Tailyour 1998, p. 123.
  37. ^ "MacKinnon, John Withers". Commonwealth War Graves Commission. Retrieved 4 December 2019.
  38. ^ "Memorial to be unveiled for Cockleshell Hero". City of Stockport. 1 December 2017. Archived from the original on 4 February 2018. Retrieved 4 December 2019.
  39. ^ "Laver, Albert Frederick". Commonwealth War Graves Commission. Retrieved 4 December 2019.
  40. ^ "Sheard, George Jellicoe". Commonwealth War Graves Commission. Retrieved 4 December 2019.
  41. ^ "Mills, William Henry". Commonwealth War Graves Commission. Retrieved 4 December 2019.
  42. ^ "Conway, James ES". Commonwealth War Graves Commission. Retrieved 4 December 2019.
  43. ^ "Wallace, Samuel". Commonwealth War Graves Commission. Retrieved 4 December 2019.
  44. ^ "Moffatt, David Gabriel". Commonwealth War Graves Commission. Retrieved 4 December 2019.
  45. ^ "Ewart, Robert". Commonwealth War Graves Commission. Retrieved 4 December 2019.
  46. ^ Letter from Louis Mountbatten to the Secretary of the Admiralty, dated 29 April 1943
  47. ^ Rees 2011, pp. 293–298.
  48. ^ Oldfield, Paul (2013). Cockleshell Raid. Pen and Sword. p. 187. ISBN 978-1781592557.
  49. ^ One Foreword for CHFWitness by Matthew Little, former RMM Archivist and librarian
  50. ^ The Cockleshell Heroes at IMDb
  51. ^ a b "The Most Courageous Raid of WWII". BBC. Retrieved 1 November 2011.
  52. ^ [51] M. R. D. Foot, Professor of Modern History, Manchester University


  • Rees, Quentin (2011). Cockleshell Heroes: The Final Witness. Amberley. ISBN 978-1445605951.
  • Rees, Quentin (2008). The Cockleshell Canoes: British Military Canoes of World War Two. Amberley. ISBN 978-1848680654.
  • Bird, Keith W. (2006). Erich Raeder: Admiral of the Third Reich. Annapolis: Naval Institute. ISBN 978-1557500472.
  • Cohen, William A. (2005). Secrets of Special Ops Leadership: Dare the Impossible – Achieve the Extraordinary. AMACOM. ISBN 978-0814408407.
  • Ashdown, Paddy (2012). A Brilliant Little Operation: The Cockleshell Heroes and the Most Courageous Raid of World War 2. Aurum. ISBN 978-1781311257.
  • Southby-Tailyour, Ewen (1998). Blondie – a Life of Lieutenant–Colonel H. G. Hasler DSO OBE RM – Founder of the SBS and Modern Single Handed Ocean Racing. Leo Cooper. ISBN 978-0850525168.
  • Thomas, Charles S. (1990). The German Navy in the Nazi Era. Unwin Hyman. pp. 212–213. ISBN 978-0044454939.

Further reading[edit]

  • C. E. Lucas Phillips. Cockleshell Heroes. William Heinemann, 1956. Pan reprint 2000. ISBN 0330480693.
  • Robert Lyman. Operation Suicide: The Remarkable Story of the Cockleshell Raid. Quercus, 2013[ISBN missing]
  • William Sparks, DSM, with Michael Munn. The Last of the Cockleshell Heroes. Leo Cooper, 1992.[ISBN missing]

External links[edit]