The Tondern raid, officially designated Operation F.7, was a British bombing raid mounted by the Royal Navy and Royal Air Force against the Imperial German Navy's airship base at Tønder, Denmark, then a part of Germany. It was the first attack in history made by aircraft flying from a carrier flight deck. On 19 July 1918 seven Sopwith Camels took off from the converted battlecruiser Furious. For the loss of one man, the British destroyed two German zeppelins, L 54 and L 60, and a captive balloon.
Furious had initially been converted for use as an aircraft carrier during her construction, with a flight deck forward of her main superstructure, and during 1917 had been equipped with the Sopwith Camel 2F.1a navalised variant of the Sopwith Camel. These partially replaced the Sopwith 1½ Strutter. In late 1917 a second flight deck was fitted aft (landing on which proved "almost as hazardous as ditching in the sea.") Until such need arose however, she was dispatched on reconnaissance missions off the Heligoland Bight searching for minefields and looking for evidence of counter-mining by the Germans.
An attack on the bases of the Imperial German Navy's Naval Airship Division was allegedly suggested to Rear-Admiral Phillimore by his Royal Air Force[Note 1] staff officer Lieutenant-Colonel Robert Clark-Hall and one of his pilots, Squadron Commander Richard Bell-Davies, VC. Clark-Hall received Phillimore's approval and the Commander-in-Chief of the Grand Fleet David Beatty's permission.
It was originally planned to use Sopwith 1½ Strutters in an attack, but these were too valuable for reconnaissance purposes and Sopwith Camels were substituted, whose range limitations meant an attack on the airship base at Tønder. The initial attack on Tønder, named Operation F.6 called for two waves of four aircraft, each pilot receiving special training. One of the pilots, Major Moore, was posted away before the operation's scheduled date of 29 June 1918, by which time it was too late to train a replacement. Training consisted of bombing runs on the airfield at Turnhouse, where the outlines of Tondern's three airship sheds were marked out. The pilots were Captains W. D. Jackson, W. F. Dickson, Bernard A. Smart and T. K. Thyne, and Lieutenants N. E. Williams, S. Dawson and W. A. Yeulett.
On 27 June Furious put to sea from Rosyth, escorted by the First Light Cruiser Squadron and eight destroyers from the 13th Flotilla. On 29 June the ships reached the flying off point but with Force 6 winds prevailing flying was deemed impossible and the operation was called off.
The mission was attempted again, renamed Operation F.7, and Furious went to sea at 12:03 on 17 July. This time she was escorted by "Force B", including a division of the First Battle Squadron (all the new Revenge-class battleships), the Seventh Light Cruiser Squadron and a destroyer screen. HMS Resolution's' "Y" turret guns had been loaded with a special shrapnel shell for use against airships. During the passage the destroyer Valentine investigated a reported submarine contact, but nothing else untoward occurred.
At 03:04 in the morning of 18 July Furious was ready to fly off her Camels when a thunderstorm struck. Rather than cancel the operation, it was decided to delay it twenty-four hours and Furious and her destroyer screen fell back on Force B. The combined squadron cruised out of sight off the Danish coast until the morning of 19 July, and in worsening weather conditions Furious flew off her Camels between 03:13 and 03:21. The first flight consisted of Jackson, Dickson and Williams; the second of Smart, Dawson, Yeulett and Thyne. Thyne was forced to turn around with engine trouble before reaching the target and ditched his aircraft before being recovered.[Note 2]
The first three aircraft arrived over Tondern at 04:35, taking the base by surprise. There were three airship sheds, codenamed by the Germans as "Toska", "Tobias" and "Toni". Toska, the largest one, was a double shed and housed the airships L.54 and L.60. Tobias contained a captive balloon and Toni was in the process of being dismantled. The first wave of aircraft focussed on Toska and three bombs hit the shed and detonated the gas bags of L.54 and L.60, destroying them by fire but not causing them to explode and destroy the shed. Another bomb from the first wave hit Tobias shed and damaged the balloon. The second wave destroyed the captive balloon afire and scored a number of near misses on a wagon loaded with hydrogen cylinders. Despite the loss of the two airships the Germans suffered only four men injured.
During the attack ground fire was directed at both waves but the only damage was an undercarriage wheel shot off a Camel from the second wave. Williams, Jackson and Dawson, in the belief that they had insufficient fuel to reach the British squadron offshore, headed for Denmark and landed there. Dickson, Yuelett and Smart flew to sea to find the British ships. Dickson ditched at 05:55 and Smart, having suffered engine trouble, at 06:30. Yuelett was not heard from again and presumed drowned, and it was supposed that he had been forced to ditch prematurely through fuel exhaustion. The British squadron waited for the other pilots until the allotted time period for the Camels' fuel capacity had run-out, then after 07:00 the ships took cruising formation and made for home.
The German Naval Airship Division quickly had the double hangar Toska repaired, but Tondern was abandoned as an active base, and ordered to be used only as an emergency landing site. Defences at the other bases were improved and at Nordholz a swathe of the countryside near the local airbase was burned off so as to prevent it being set alight by enemy bombs. The British conducted no other carrier raids during the war but other raids were being planned. From 1917 onwards a raid on the German High Seas Fleet was being mooted using the new torpedo-carrying Sopwith Cuckoo. The Cuckoo was not available in sufficient numbers until early 1919 and the project was still-born. The concept was revived during the Second World War and eventually resulted in the successful raid on the Italian port of Taranto in 1940. Of the British pilots Dickson was awarded the DSO, whilst Smart received the bar to his previously awarded DSO. Yeulett's body was later recovered from the sea.
- On 1 April 1918 the Royal Naval Air Service was amalgamated with the Royal Flying Corps to form the Royal Air Force. RNAS officers who had been part of the Navy hierarchy became members of the RAF.
- Despite Furious having a landing deck aft, returning aircraft were expected to ditch in the sea, and the pilot would be rescued by a destroyer, and the plane recovered if possible.
- Probert, p. 46
- Layman. "Furious and the Tondern Raid": 380.
- Till. Air Power and the Royal Navy. p. 62.
- Layman. "Furious and the Tondern Raid": 381.
- Layman. "Furious and the Tondern Raid": 382.
- Layman. "Furious and the Tondern Raid": 383.
- Flightglobal/Archive – Aviation History – 1918
- Beatty, Admiral Sir David (1918). Grand Fleet Battle Instructions. London: H.M.S.O.
- Layman, R. L. (1973). "Furious and the Tondern Raid". Warship International. Vol. X no. 4. pp. 374–385.
- Till, Geoffrey (1979). Air Power and the Royal Navy, 1914–1945: A Historical Survey. London: Macdonald and Jane's.
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