|Part of World War II|
| United Kingdom
|Commanders and leaders|
|Henty Henty-Creer †||Hans Meyer|
|6 midget submarines,
6 conventional submarines
|2 battleships, 1 heavy cruiser|
|Casualties and losses|
|9 killed, 6 prisoner||1 battleship damaged|
The attacks took place in September 1943 and succeeded in keeping Tirpitz out of action for at least six months.
The attack was masterminded and directed from HMS Varbel, located in Port Bannatyne on the Isle of Bute. 'Varbel' (named after Commanders Varley and Bell, designers of the X-Craft prototype) was the on-shore headquarters for the 12th Submarine Flotilla (midget submarines). It had been a luxury 88-bedroom hotel (the Kyles Hydropathic Hotel) requisitioned by the Admiralty to serve as the Flotilla’s headquarters. All X-craft training, and preparation for X-craft attacks (including that on 'Tirpitz'), was co-ordinated from 'Varbel'.
Intelligence contributing to the attack on Tirpitz was collected and sent to the RN by the Norwegian resistance, especially brothers Torbjørn Johansen and Einar Johansen.
Six X-craft were used. HMS X5, X6 and X7 were allocated the battleship Tirpitz, in Kåfjord. HMS X9 and X10 were to attack the battleship Scharnhorst, also in Kåfjord. HMS X8 was to attack the heavy cruiser Lützow in Langfjord.
The craft were towed to the area by conventional submarines (HMS Truculent (X6) Syrtis (X9), Sea Nymph (X8), Thrasher (X5), Stubborn (X7), and Sceptre (X10)) and manned by passage crews on the way. Close to the target, the operation crews would take over. X9, while commanded by S-Lt E Kearon of the passage crew and probably trimmed heavily by the bow in the heavy sea for the tow, was lost with all hands on the passage when her tow parted and she suffered an abrupt plunge due to her bow-down trim. X8 (passage crew commanded by Lt. Jack Smart) developed serious leaks in her side-mounted demolition charges, which had to be jettisoned; these exploded, leaving her so damaged she had to be scuttled. The remaining X-craft began their run in on 20 September and the attacks took place on 22 September 1943.
Scharnhorst was engaged in exercises at the time, and hence was not at her normal mooring, X10's attack was abandoned, although this was due to mechanical and navigation problems, and the submarine returned to rendezvous with her 'tug' submarine and was taken back to Scotland.
X5, commanded by Lieutenant Henty Henty-Creer, disappeared with her crew during Source. She is believed to have been sunk by a direct hit from one of Tirpitz's four-inch guns before the crew had a chance to place her charges. In 2004, a saddle charge identical to those used by the X-class was found on the bottom of Kåfjord, a short distance from the site of the attack. Although it has not been positively identified, it is believed to be from X5.[contradiction] An expedition jointly run by the late Carl Spencer (Britannic 2003) and Bill Smith (Bluebird Project) and the Royal Navy using the mine hunters HMS Quorn and HMS Blyth in 2006 mapped the north and south anchorages used by Tirpitz and was able to prove without doubt that this charge was well inside the net enclosure of the north anchorage and was therefore most likely to have come from X6. In June 2011 this device was detonated by the Royal Norwegian Navy.
X6 and X7 managed to drop their charges underneath Tirpitz, but were unable to make good their escape as they were observed and attacked. Both craft were abandoned and six crew survived to be captured. Tirpitz was heavily damaged. While not in danger of sinking, she took on over 1,400 tons of water and suffered significant mechanical damage, including shock to the roller bearings in "D" turret aft. Tirpitz could not leave her anchorage until April 1944. For this action, the commanders of the craft, Lieutenant Donald Cameron (X6) and Lieutenant Basil Place (X7), were awarded the Victoria Cross, whilst Robert Aitken, Richard Haddon Kendall, and John Thornton Lorimer received the Distinguished Service Order and Edmund Goddard the Conspicuous Gallantry Medal. The commander of the X8, John Elliott Smart was appointed a Member of the Order of the British Empire (MBE).
X-craft and crews
- X-5 — unofficially named Platypus, commanded by Henty-Creer, crew S-Lt Nelson, Midshipman Malcolm, and ERA Mortiboys; passage crew Lt Terry-Lloyd (commanding), LS Element, Stoker Garrity. Henty-Creer, Nelson, Malcolm, and Mortiboys were killed in the attack, though X-5's exact fate is unknown.
- X-6 — named Piker II, commanded by Lt Donald Cameron, crew Lt J. T. Lorimer, S-Lt. R. Kendall, and ERA Goddard; passage crew Lt Wilson (commanding), LS McGregor, Stoker Oxley. Cameron earned a Victoria Cross (VC), Lorimer and Kendall the Distinguished Service Order (DSO), Goddard a Conspicuous Gallantry Medal (CGM).
- X-7 — unofficially named Pdinichthys, commanded by Lt Basil Place, crew S-Lt Aitken, Lt Whittam, and ERA Whiteley; passage crew Lt Philip (commanding), LS J. J. Magennis, Stoker Luck. (Place also earned a VC, Aitken the DSO, while Philip was appointed a Member of the Order of the British Empire (MBE); Whittam and Whiteley were killed.)
- X-8 — commanded by Lt McFarlane Royal Australian Navy (Smart was passage crew commander.)
- X-9 — commanded by Lt Martin RN, commanded by S-Lt E Kearon (passage crew) when it foundered on 16 September 1943
- X-10 — unofficially named Excalibur, commanded by Lt Hudspeth Royal Australian Naval Volunteer Reserve
In popular culture
- The operation was later portrayed in the 1955 war film, Above Us the Waves, featuring John Mills, which was based on both Operation Source, and the earlier Chariot human torpedo attacks on Tirpitz.
- The CO of X5, Henty Henty-Creer was an Australian commissioned in the RNVR and five members of the Royal Australian Navy were among the crew of the British midget submarines involved. Worledge, Ray. 2012 Australians in Midget Submarines. (Access date: 24 March 2012.)
- Bute at War
- Grove, Eric. Sea Battles in Close-up: World War 2, Volume 2 (Shepperton, Surrey: Ian Allan, 1993), pp.124.
- Grove, p.124.
- Grove, p.127.
- Grove, pp.124 & 127.
-  Supplement to The London Gazette, p.996 of the article or p.4 of PDF file
- Her sprenges bomba som skulle senke «Tirpitz»
- Grove, p.131.
- The London Gazette: . 10 September 1943. Retrieved 2008-01-24.
- The London Gazette: . 17 December 1943. Retrieved 2008-06-23.
- Grove, pp.124 & 128.
- Grove, pp.127 & 128.
- Magennis later earned a VC in the midget submarine attack on Takao. Grove, p.127.
- Grove, p.128.