The Battle of the Espero Convoy was the first Second World War surface engagement between Italian and Allied warships. It took place southwest of Crete on 28 June 1940, after a force of seven cruisers and 16 destroyers, preparing to escort three Allied convoys to Alexandria, were informed of the presence of an Italian flotilla of three destroyers. The Italian warships were bound from Taranto to Tobruk, carrying an anti-tank army unit to north Africa.
On 10 June 1940, Italy declared war on Britain and France. The Italian High Command (Comando Supremo) expected a British Army advance into Cyrenaica led by armoured forces, and decided that an anti-tank unit should be moved to Tobruk as soon as possible. The unit comprised ten anti-tank guns, 120 short tons (110 t) of ammunition, and 162 soldiers.
The Italians chose three Turbine-class destroyers to transport the anti-tank unit, for their high speed (36 kn (41 mph; 67 km/h)) and loading capacity. The three chosen were Espero (flagship), Zeffiro and Ostro. The Italian flotilla was commanded by Capitano di Vascello Enrico Baroni.
At the same time, three Allied convoys—two from Malta and another from Greece—were to be brought to Alexandria, covered by seven cruisers (two light cruisers—HMS Capetown and Caledon—and five of the 7th Cruiser Squadron: HMS Orion (flagship), Liverpool, Gloucester, Neptune and HMAS Sydney) and 16 destroyers. The British warships were commanded by Vice-Admiral John Tovey. The Allied operation was supported by Short Sunderland flying boats from Alexandria and Malta.
The Italian destroyers were found at noon by two Sunderlands some 50 mi (43 nmi; 80 km) west of Zante island. They were within striking range of Tovey’s 7th Squadron, so he ordered them to intercept the Italians in two divisions.
The first 6 in (150 mm) salvoes from the Allied cruisers were fired at 18:30 at the surprised Italian flotilla at a range of 18,000 yd (16,000 m). Baroni realised that—despite the best speed of his ships—they were hopelessly outgunned. He therefore decided to sacrifice Espero in order to enable the other two to escape: Espero laid smokescreens and conducted evasive manoeuvres. Zeffiro and Ostro headed safely to the southwest at full speed.
Despite heavy firing, Espero was not hit until 19:20, when the range had closed to 14,000 yd (13,000 m). By this time, Tovey had given up the chase of the other two destroyers. The 7th Squadron expended about 5,000 shells before Espero was sunk, after 130 minutes of fierce fighting.
A single Italian 4.7 in (120 mm) shell hit HMS Liverpool, but caused little damage. The battle exacerbated a shortage of ammunition at Alexandria so that the planned Malta convoys were suspended for two weeks. HMAS Sydney rescued 47 men from the Italian destroyer, and six others were later found alive by an Italian submarine almost 20 days later. Captain Baroni died aboard his ship, and was posthumously awarded the Medaglia d´oro al valor militare. Zeffiro and Ostro both reached Benghazi the next day and arrived at Tobruk shortly after. Two-thirds of the convoy had been saved.
There were lessons learned by both sides after this battle. For the Allies, the battle showed that a daylight naval action at long range was unlikely to be decisive when the enemy units outmatched one's own speed. For the Italians, this was a grim lesson about the importance of well-coordinated air surveillance. Had Italian aircraft spotted the Allied cruisers before they came within range, all three destroyers would have escaped unscathed.
- Greene & Massignani, p. 63
- De La Sierra, p. 59
- "Enrico Barone, Captain (translated from Italian)". Ministero della Difesa. http://translate.google.co.uk/translate?hl=en&sl=it&u=http://www.marina.difesa.it/storia/movm/parte06/movm6007.asp&ei=3bZZTM2SMZKI0wSopMjYCA&sa=X&oi=translate&ct=result&resnum=5&ved=0CCcQ7gEwBA&prev=/search%3Fq%3Denrico%2Bbaroni%26hl%3Den%26client%3Dopera%26hs%3DY5O%26rls%3Den%26prmd%3Do. Retrieved 4 August 2010.
- Woodman, p.42
- Greene & Massignani, pp. 63–65
- De la Sierra, pp. 58–63
- De la Sierra, p. 58
- Miller, War at Sea, p. 113
- Green & Massignani, p 65
- De la Sierra, p 62
- O'Hara, p. 34.
- Greene & Massignani, p 65
- Greene, Jack & Massignani, Alessandro: The Naval War in the Mediterranean, 1940–1943, Chatam Publishing, London, 1998. ISBN 1-86176-057-4.
- Miller, Nathan: War at Sea: A Naval History of World War II, Oxford University Press, Oxford, 1995. ISBN 0-19-511038-2 (Pbk.).
- De la Sierra, Luis: La Guerra Naval en el Mediterráneo, Editorial Juventud, Barcelona, 1976. ISBN 84-261-0264-6. (Spanish)
- O'Hara, Vincent P. (2009). Struggle for the Middle Sea: The Great Navies at War in the Mediterranean Theater, 1940-1945. Annapolis, Maryland: Naval Institute Press. ISBN 978-1-59114-648-3.
- Woodman, Richard (2000). Malta Convoys 1940-1943. London: John Murray. ISBN 0-7195-6408-5.
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