Operation Vigorous

Operation Vigorous
Part of the Battle of the Mediterranean of Second World War
Mediterranean Sea
Date 12–16 June 1942 Location Eastern Mediterranean, towards Malta 35°53′N 14°30′E Result Axis victory
Belligerents
United Kingdom Australia	Italy Germany
Commanders and leaders
Philip Vian	Angelo Iachino
Strength
8 light cruisers 26 destroyers 9 submarines 2 minesweepers 4 corvettes 2 rescue ships 4 MTBs 11 merchant ships 1 auxiliary ship	2 battleships 2 heavy cruisers 2 light cruisers 12 destroyers 6 E-boats 2 U-boats 220 aircraft
Casualties and losses
1 cruiser sunk 3 destroyers sunk 2 merchant ships sunk 1 MTB sunk 3 cruisers damaged 2 merchant ships damaged 200+ killed	1 heavy cruiser sunk 1 battleship slightly damaged 21 aircraft c. 600 killed

Operation Vigorous was a British operation in the Mediterranean during the Second World War, to escort a supply convoy (MW-11) that sailed from Haifa and Port Said on 12 June 1942 to Malta. The convoy was attacked by Axis air and naval forces and forced to turn back and return to Alexandria on 16 June.

Background

Malta

Main article: Siege of Malta

Until the French surrender and Italy's declaration of war, the Mediterranean had been an Allied "lake". The French Fleet and the Royal Navy's Mediterranean Fleet dominated the only potential and credible adversary, Italy's Regia Marina.

The French surrender and its consequences changed that. The French Fleet became a potentially potent threat in Axis hands and so was, in part, destroyed, adding to French antipathy toward the British. French bases in North Africa ceased to offer protection to Allied shipping. The Regia Marina possessed potent modern warships, particularly battleships and heavy cruisers, and Italian and Libyan territory provided centrally located bases that could cut British supply routes. The fall of Greece in 1941 extended the reach of Axis aircraft and submarines, which were consequently able to intercept Allied shipping from Alexandria and Suez.

German and Italian armies from Libyan territory also threatened Egypt and the strategically important Suez Canal by land. A catastrophe in Egypt might in turn lead to destabilisation of Britain's control of Middle Eastern oil supplies, or even worse, to the Axis gaining control of them. This scenario depended upon Axis forces in North Africa receiving adequate supplies from Italy. Malta threatened this Axis supply route, but itself needed regular resupply and reinforcement, to be both an effective threat and to resist Axis invasion.

By mid-June 1942, Malta's supply situation had deteriorated. The German Luftwaffe had joined the Italian Regia Aeronautica to isolate and starve the island and it had become untenable as an offensive base. Axis armies had advanced into Egypt and Crete thereby acquiring their own advance bases and denying the British safety over much of the eastern Mediterranean. New aircraft were regularly flown into Malta but food and fuel were diminishing. The British made great efforts to supply the island. Two convoys, codenamed Harpoon and Vigorous, were gathered, sailing simultaneously to split the Axis opposition.

Convoy MW-11

The British Mediterranean Fleet was reinforced, with forces available from the Indian Ocean, for the passage of two simultaneous Malta convoys, Operation Harpoon, eastwards from Gibraltar and Operation Vigorous westwards from Egypt. Ships were sent from Kilindini in Kenya, to Haifa to cover the eastern convoy, including the Australian N-class destroyers; HMAS Norman, Napier, Nestor and Nizam of the 7th Destroyer Flotilla.

The Operation Vigorous convoy of 11 merchant ships and escorts sailed from Haifa and Port Said on 12 June and were met the next day off Tobruk by Force A (Rear-Admiral Philip Vian), with six light cruisers of the 15th Cruiser Squadron, two Town-class cruisers from the 4th Cruiser Squadron and 17 destroyers.

The escort force comprised eight cruisers and 26 destroyers supported by corvettes and minesweepers and the battleship HMS Centurion, which—having been disarmed between the wars—had been refitted with anti-aircraft guns. HMS Queen Elizabeth and Valiant had been sunk in Alexandria harbour in December 1941 by Italian frogmen, so no battleship was available to provide cover: Centurion simulated a commissioned battleship. Nine submarines were deployed as a screen at Taranto and four more operated west of Malta.

Bomb Alley

The convoy sailed through 'Bomb Alley' between German occupied Crete and north Africa and came under intensive bomb, torpedo and surface attacks almost as soon as the convoy had left Alexandria. Early attacks were concentrated on the cruisers and the 11 ships of the convoy but later the destroyers became the principal targets.

A merchant ship was damaged by air attacks on the 12th and had to divert to Tobruk. Another merchant ship sent to Tobruk due to engine trouble was sunk by further aircraft attacks.

Italian fleet

Battleship Littorio

By 14 June, two ships had been lost to air attack and two more damaged. That evening, Vian learnt that a strong Italian naval force (under Admiral Angelo Iachino) with two battleships, two heavy and two light cruisers plus destroyers had sailed from Taranto to intercept the convoy. The Italian fleet went into combat equipped with a search radar for the first time in the war; a German De.Te system which was mounted on board the destroyer Legionario. The chances of driving them off were slim.

Early on 15 June, the first of five (1-5) course reversals were made as Vigorous tried to break through to Malta. As the convoy now headed eastward (1), German E-boats from Derna, Libya launched torpedo strikes. The cruiser HMS Newcastle was damaged by S-56 and the destroyer HMS Hasty was sunk by S-55. Around 07:00, when the Italian fleet was 200 nautical miles (370 km; 230 mi) to the northwest, the convoy resumed its course for Malta (2).

Royal Air Force aircraft based on Malta attacked the Italian fleet and disabled the heavy cruiser Trento on the morning of 15 June 1942. She was hit by a torpedo from a Bristol Beaufort at 05:15. Trento was immobilised and left behind, assisted by the destroyer Antonio Pigafetta, while the rest of the fleet continued to pursue the Vigorous convoy. The British submarine HMS Umbra found the damaged ship at 09:10 and torpedoed her, hitting the magazine. The ship sank quickly and over half the crew died. Italian support ships attacked the submarine with depth charges without results.

Between 09:40 and noon on 15 June, two more course reversals (3 and 4) were made so that once again the convoy was bound for Malta. All afternoon, there were air attacks and, south of Crete, the cruiser HMS Birmingham was damaged and the escorting destroyer HMS Airedale was sunk by Junkers Ju 87 Stuka dive bombers. During the afternoon, no fewer than 12 aircraft had targeted HMS Airedale, and left her a smouldering wreck. The aft end was completely gone: it's believed that the ship's own ammunition or depth charge store had exploded. She was scuttled the following day by HMS Aldenham and Hurworth.

Sinking HMAS Nestor, 16 June 1942

On the afternoon of 15 June, a signal was received intimating that the Operation Harpoon convoy had succeeded in reaching Malta from the west. The convoy was down to six ships when, at about 18:00 on 15 June, when the convoy was south west of Crete, HMAS Nestor was straddled by a stick of heavy bombs dropped by an Italian bomber which caused serious damage to her boiler rooms. She was taken in tow by HMS Javelin, but at about 05:30 the next morning (16 June)—with the destroyer then sinking by the nose—it was decided to scuttle. The crew was transferred to HMS Javelin and she was sunk at about 07:00 by depth charges.

Operation abandoned

On the evening of 15 June, in view of the strength of Axis air attacks from Axis airfields in North Africa, the presence of a large portion of the Italian fleet, lack of fuel caused by diversionary tactics and seriously depleted ammunition stocks, it was finally decided by Admiral Henry Harwood (commander of the Mediterranean Fleet at Alexandria) to abandon the operation and return to Alexandria (course reversal 5). As the convoy withdrew to Alexandria, the light cruiser HMS Hermione was torpedoed and sunk in the early hours of 16 June by U-205—south of Crete—in Bomb Alley.

At this time, as the Italian fleet returned to Taranto, an RAF Wellington from Malta torpedoed and slightly damaged the battleship Littorio that, however, reached port without reducing speed. None of the Vigorous ships reached Malta. A cruiser, HMS Hermione; the destroyers HMS Airedale, Hasty and HMAS Nestor and two merchant ships had been lost in the attempt. Three cruisers, a destroyer and one corvette were damaged. British air and submarine attacks sank the Italian cruiser Trento and damaged Littorio. The Italian Fleet defeated the convoy operation with no direct contact between the surface forces. Royal Navy gunners shot down 21 of the approximately 220 attacking aircraft.

To try to keep the Italian Fleet away from Vigorous and Harpoon, submarines Proteus, Thorn, Taku, Thrasher, Porpoise, Una, Uproar, Ultimatum and Umbra were detailed to patrol off Taranto and Safari, Unbroken, Unison and Unruffled between Sicily and Sardinia. The submarines had little influence on the convoys, with only the Italian cruiser Trento being sunk, after it had been damaged by an RAF air attack.

Spitfire fighters based at Malta needed fuel to fly, just as Malta needed supplies but Vigorous had failed and only two merchantmen of the six in Harpoon had reached Malta. Air Vice Marshal Keith Park, the air commander in Malta, told London he had only seven weeks’ fuel left. In August, almost all the available strength of the Royal Navy was put into the next convoy, Operation Pedestal.

Order of battle

• † - ships sunk
• # - ships damaged, ## - heavily damaged

Allies

Seven cruisers:

• 4th Cruiser Squadron
  • light cruisers: HMS Newcastle ##, Birmingham #
• 15th Cruiser Squadron
  • light cruisers: HMS Cleopatra, Dido, Hermione†, Euryalus, Arethusa
• light cruiser (AA): HMS Coventry

26 destroyers:

• 2nd Destroyer Flotilla:
  • HMS Fortune, Griffin, Hotspur
• 5th Destroyer Flotilla (Hunt class destroyer escorts):
  • HMS Dulverton, Exmoor, Croome, Eridge, Airedale†, Beaufort, Hurworth, Tetcott, Aldenham
• 7th Destroyer Flotilla:
  • HMAS Norman, Napier, Nestor†, Nizam
• 12th Destroyer Flotilla:
  • HMS Pakenham, Paladin, Inconstant
• 14th Destroyer Flotilla
  • HMS Jervis, Javelin, Kelvin
• 22nd Destroyer Flotilla:
  • HMS Hero, Hasty†, Sikh, Zulu

Four corvettes (Flower-class):

• HMS Delphinium, HMS Erica, HMS Primula, HMS Snapdragon

Two minesweepers (Bangor-class):

• HMS Boston, Seaham

Four motor torpedo boats:

• MTB-259†, MTB-261, MTB-262, MTB-264

Two rescue ships:

• Antwerp, Malines

One auxiliary ship (old battleship):

• HMS Centurion

Nine submarines:

• HMS Proteus Thorn, Taku, Thrasher, Porpoise, Una, Uproar, Ultimatum, Umbra

Allied merchantmen

• 11 ships
  • MW-11A: Ajax, City of Edinburgh, City of Lincoln, m.v. City of Pretoria, Elizabeth Bakke
  • MW-11B: tankers Bulkoil, Potaro #
  • MW-11C: Aagtekirk†, Bhutan†, City of Calcutta #, Rembrandt

Axis warships

Two battleships:

• Littorio #, Vittorio Veneto

Two heavy cruisers:

• Trento†, Gorizia

Two light cruisers:

• Emanuele Filiberto Duca d'Aosta,

12 destroyers:

• Alpino, Antonio Pigafetta, Ascari, Aviere, Bersagliere, Camicia Nera, Geniere, Folgore, Freccia, Legionario, Mitragliere, Saetta

See also

• Battle of the Mediterranean
• Bonner Fellers
• Malta Convoys
• Operation Harpoon
• Operation Pedestal

References

• Bragadin, M'A. (2011). La marina italiana 1940–1945: Segreti bellici e scelte operative. Odoya library. Bologna: Odoya. ISBN 978-8-86288-110-4. {{cite book}}: Unknown parameter |trans_title= ignored (|trans-title= suggested) (help)
• Greene, J.; Massignani, A. (2002) [1998]. The Naval War in the Mediterrnean 1940–1943 (pbk. ed.). Rochester: Chatham. ISBN 978-1-86176-190-3.{{cite book}}: CS1 maint: ref duplicates default (link)
• H. M. Ships Damaged or Sunk by Enemy Action, 3rd September, 1939 to 2nd September, 1945 (PDF). London: Admiralty: Director of Naval Construction. 1952. OCLC 38570200. Retrieved 28 September 2016.
• Llewellyn-Jones, M. (2007). The Royal Navy and the Mediterranean Convoys: A Naval Staff History. Naval Staff Histories. London: Routledge. ISBN 978-0-415-39095-8.
• Playfair, Major-General I. S. O.; et al. (2004) [1st. pub. HMSO:1960]. Butler, Sir James (ed.). The Mediterranean and Middle East: British Fortunes Reach Their Lowest Ebb (September 1941 to September 1942). History of the Second World War, United Kingdom Military Series. Vol. III. Uckfield: Naval & Military Press. ISBN 1-84574-067-X.
• Roskill, S. W. (1956). The Period of Balance. History of the Second World War: The War at Sea 1939–1945. Vol. II. London: HMSO. OCLC 174453986. Retrieved 29 September 2016.

External links

• Campaign summary of Malta Convoys
• RN submarines site
• HMS Grove, escort destroyer