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Dunkirk shipwrecks give up secrets in new survey between Historic England and French marine archeaologists

By: Matt Leclere mleclere@thekmgroup.co.uk

Published: 12:08, 17 October 2023

The locations of three boats used in the Dunkirk evacuation in the Second World War have been uncovered for the first time by a detailed survey of 30 shipwrecks off the French coast.

Commanded from the tunnels underneath Dover Castle, the mission codenamed Operation Dynamo saw more than 338,000 Allied soldiers rescued in small boats.

Multibeam survey of the wreck of the destroyer HMS Keith, showing the displaced hull section, after she sank off the coast of Dunkirk during the evacuations in 1940. Picture: Drassm/MSDS Marine/Historic England

The rescue spanning nine days between May 26 and June 4 saw private boats, fishing vessels and lifeboats requisitioned by the navy from British coastal towns.

Dover and Deal residents played major roles in the operation both militarily and from the civilian response manning the “little ships”.

Now Historic England and its French counterpart, Drassm, have carried out detailed surveys of 30 wrecks showing their position, characteristics and condition in “remarkable detail”.

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“The results give us a striking insight into our shared heritage that still lies beneath the waters off Dunkirk.”

The main instrument used for the survey was a multi-beam echo-sounder mounted beneath the hull of the Drassm research ship Andre Malraux.

Drassm's archaeological research vessel, named Andre Malraux, that carried out the survey off Dunkirk to find lost ships during 'Operation Dynamo' in 1940. Picture: CUD/Ville de Dunkerque

The instrument emits a fan of sound that is recorded as it bounces off the seabed, and the data is used by geophysicists to create a highly detailed three-dimensional image of seabed features such as shipwrecks.

A total of 27 Operation Dynamo wrecks were located and studied, with the precise location of 12 of these not previously known.

Four wrecks, either destroyed or covered by sand, could not be found.

A report in the East Kent Mercury edition on June 8, 1940 praised the efforts of the Deal boatmen who rallied to the call and took part in the evacuation.

It read: “Of all the deeds that have helped to build the wonderful traditions of the Deal boatmen, their part in the evacuation of Dunkirk will go down in history as an unforgettable instance of willing sacrifice and indomitable courage that will ever be associated with those who had the honour of participating in so glorious an event.”

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Many civilian craft were involved and also among them was the Walmer lifeboat – which was crewed by Royal Navy reservists.

Multibeam survey of the wreck of the Normannia after she sank off the coast of Dunkirk during the evacuations in 1940. Picture: Drassm/MSDS Marine/Historic England

The vessel, named Charles Dibdin, had a difficult crossing back after limping into Dover with the engine out of order but no records remain about how many soldiers were rescued at Dunkirk.

Tracer bullets were found in her hull several years later during an inspection by the RNLI.

Speaking on the latest shipwreck project, a spokesperson for Historic England said: “A further 19 features have been studied, three of which appear to correspond to the location and characteristics of vessels lost during Operation Dynamo that were previously undiscovered.

“The identities of two wrecks – the French auxiliary minesweepers Denis Papin and Moussaillon sunk by air attacks on June 1 1940 – have been corrected.

“The new data showed that previous identifications had confused the two wrecks.”

The Normannia, requisitioned as a troop carrier and sunk by an air attack on 30 May 1940. Picture: Historic England

The spokeswoman said added that the survey data was detailed enough to confirm the identification of 19 wrecks by matching dimensions and features with historic photographs.

“On one wreck, the davits from which lifeboats once hung can be seen in the survey data. Their precise form – together with other details and dimensions – confirm that it is the Normannia, requisitioned as a troop carrier and sunk by an air attack on 30th May,” she said.

“The survey has confirmed that many of the Dynamo wrecks are in relatively good condition.

Multibeam survey of the wreck of the destroyer HMS Keith, showing the displaced hull section, after she sank off the coast of Dunkirk during the evacuations in 1940. Picture: Drassm/MSDS Marine/Historic England

“However, the new data also shows recent changes.

“The destroyer HMS Keith was surveyed in 2016 and 2019 by the Port of Dunkirk (Grand Port Maritime de Dunkerque – GPMD). The 2023 survey shows that part of the destroyer’s hull has degraded in just a few years, collapsing away from its former position.”

The survey is the first part of an ongoing project which next year will see local divers carry out further investigations, with the findings to be displayed in museums and online.

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