On the whole, Italy’s aviation industry was badly organized
and inefficient, producing a wide variety of aircraft types in small numbers.
The various companies involved resisted manufacturing each other’s more
successful designs, and the almost artisan production methods resulted in production
times that were more than 50 percent longer than for comparable German
aircraft. The Italian air force largely depended on radial engines, but these
low-powered machines seldom exceeded 1,000 hp. Adoption of the bulkier but much
more powerful German-designed Daimler-Benz in-line engine helped solve that
problem.
The fact that the CR-42, a wood-and-canvas biplane fighter
with nonretractable landing gear, was still in production in 1944 (and a
serious candidate for the Daimler-Benz engine) reveals the sad state of Italian
aircraft production. Italian fighters were almost all underarmed, due to
financial considerations and poorly designed, weak wings. Radios were not
installed in all aircraft until 1942; fuel was stored in thinly lined, leaking
tanks; most airfields were dirt runways; and pilots were slow to adapt to
closed canopies. On any given day, operational efficiency was rarely higher
than 70 percent. Ground-support aircraft, based on precepts developed by
General Amadeo Mecozzi, were so poorly designed that early in the war, Italy
simply retired its ground-attack planes and purchased 159 Ju-87 Stuka
dive-bombers from Germany.
One area in which the Italian air force excelled was the
torpedo-bomber. Although use of this plane was hindered by interservice rivalry
before the war, the torpedo-bomber was deployed to units by late 1940. German
air units later successfully emulated Italian torpedo-bombing tactics and
purchased torpedoes from Italy. Yet the Italians chose simply to adapt a
three-engine SM-79 level bomber for torpedo bombing rather than design a true
torpedo-bomber.
1940
The Sparviero began its torpedo bomber (Aerosilurante in
Italian) career on 25 July 1940 when a new unit was established after several
years of experiments. The "Special Aerotorpedoes Unit" was led by
Colonel Moioli. After having ordered the first 50 torpedoes from Whitehead
Torpedo Works, on 10 August 1940 the first aircraft landed at T5 airfield, near
Tobruk. Despite the lack of an aiming system and a specific doctrine for
tactics, an attack on shipping in Alexandria was quickly organized. There had
been experiments for many years but still, no service, no gear (except
hardpoints) and no tactics were developed for the new speciality. This was
despite previous Italian experiments into the practice of aerial torpedoing in
1914, 26 years earlier.
The first sortie under way on 15 August 1940 saw five SM.79s
that had been modified and prepared for the task sent to El Adem airfield.
Among their pilots were Buscaglia, Dequal and other pilots destined to become
"aces." The journey was made at an altitude of 1,500 m (4,920 ft) and
after two hours, at 21:30, they arrived over Alexandria and began attacking
ships, but unsuccessfully. The departure airport had only 1,000 m (3,280 ft) of
runway for takeoff, so two of the fuel tanks were left empty to reduce weight,
giving an endurance of five hours for a 4.33 hour journey. Only Buscaglia and
Dequal returned, both aircraft damaged by anti-aircraft fire. Buscaglia landed
on only one wheel, with some other damage. The other three SM.79s, attacking
after the first two, were hindered by a fierce anti-aircraft defence and low
clouds and returned to their base without releasing their torpedoes. However,
all three ran out of fuel and were forced to jettison the torpedoes which
exploded in the desert, and then force-landed three hours after the attack. Two
crews were rescued later, but the third (Fusco's) was still in Egypt when they
force-landed. The crew set light to their aircraft the next morning, which
alerted the British who then captured them. These failures were experienced
within a combat radius of only about 650 km (400 mi), in clear contrast with
the glamorous performances of the racer Sparvieros just a few years before.
Many missions followed, on 22–23 August (Alexandria), 26
August (against ships never found), and 27 August (Buscaglia against a
cruiser). The special unit became known as the 278th Squadriglia, and from
September 1940 carried out many shipping attacks, including on 4 September
(when Buscaglia had his aircraft damaged by fighters) and 10 September, when
Robone claimed a merchant ship sunk. On 17 September, after an unsuccessful day
attack, Buscaglia and Robone returned at night, attacking the British ships
that shelled Bardia. One torpedo hit HMS Kent, damaging the heavy cruiser to
the extent that the ship remained under repair until September 1941. After
almost a month of attacks, this was the first success officially acknowledged
and proven. After almost a month of further attacks, a newcomer, Erasi, flew
with Robone on 14 October 1940 against a British formation and hit HMS
Liverpool, a modern cruiser that lost her bow and needed 13 months of repair.
After several months, and despite the losses and the first unfortunate mission,
the core of the 278th was still operating the same four aircraft. The last
success of this squadron was at Souda Bay, Crete, when Buscaglia damaged
another cruiser, HMS Glasgow, despite the anti-torpedo netting surrounding the
ship, sending it out of commission for nine months while repairs were made. The
aircraft continued in service until a British bomb struck them, setting off a
torpedo and a "chain reaction" which destroyed them all.
1941
The year started out badly, but improved in April when many
successes were recorded by SM.79s of the 281st and 280th . They sank two merchant
ships, heavily damaged the British cruiser HMS Manchester (sending it out of
service for nine months) and later also sank the F class destroyer HMS
Fearless. However, one SM.79 was shot down 25 nmi (46 km) north west of Gozo on
3 June, landing in the sea and staying afloat for some time. Further Italian
successes came in August, when the light cruiser HMS Phoebe was damaged. The
large merchant ship SS Imperial Star (10,886 tonnes/12,000 tons) was sunk by an
SM.79 in September. The 130th and 132nd Gruppi were also active during the
autumn. On 24 October, they sank the Empire Pelican and Empire Defender, on 23
November they sank the Glenearn and Xhakdina, and on 11 December they heavily
damaged the Jackal.
The year ended with a total of nine Allied ships sunk and
several damaged. The Italians had lost fourteen torpedo bombers and sustained
several damaged in action. This was the best year for the Italian torpedo
bombers and also the year when the SM.84, the SM.79's successor was introduced.
Overall, these numbers meant little in the war, and almost no other results
were recorded by Italian bombers. Horizontal bombing proved to be a failure and
only dive bombers and torpedo-bombers achieved some results. The damaging of
the British cruisers was the most important result, but without German help,
the Italians would have been unable to maintain a presence in the Mediterranean
theatre. The 25 Italian bomber wings were unable to trouble the British forces,
as the Battle of Calabria demonstrated. Almost all of the major British ships
lost were due to U-Boat attacks, with the damaging of HMS Warspite, and the
sinking of HMS Barham and Ark Royal. The British fleet was left without major
ships in their Mediterranean fleet leaving the Axis better situated to control
the sea.
1942
The Axis' fortunes started to decline steadily during 1942.
Over 100 SM.79s were in service in different Italian torpedo squadrons. In
addition to its wide-scale deployment in its intended bomber-torpedo bomber
role, the Sparviero was also used for close support, reconnaissance and
transport missions. In the first six months of 1942, all the Italo-German
efforts to hit Allied ships had only resulted in the sinking of the merchant
ship Thermopilae by an aircraft flown by Carlo Faggioni.
The Allies aimed to provide Malta with vital supplies and
fuel through major convoy operations at all costs. Almost all Axis air
potential was used against the first Allied convoy, Harpoon. 14 June saw the
second torpedoing of Liverpool, by a 132nd Gruppo SM.79, putting it out of
action for another 13 months. Regardless of where the torpedo struck, (amidships
in the case of Liverpool, aft as for Kent, or forward as happened to Glasgow)
the cruisers remained highly vulnerable to torpedoes, but no Italian air attack
managed to hit them with more than one torpedo at once. On the same day the
merchant ship Tanimbar was sunk by SM.79s of the 132nd, and finally the day
after HMS Bedouin, a Tribal-class destroyer, already damaged by two Italian
cruisers, was sunk by pilot M. Aichner, also of 132nd Gruppo. For years this
victory was contested by the Italian Navy, who claimed to have sunk Bedouin
with gunfire.
August saw heavy attacks on the 14 merchant ships and 44
major warships of the Operation Pedestal convoy, the second Allied attempt to
resupply Malta past Axis bombers, minefields and U-boats. Nine of the merchant
ships and four of the warships were sunk, and others were damaged, but only the
destroyer HMS Foresight and the merchant ship MV Deucalion were sunk by Italian
torpedo bombers. Although damaged, the tanker SS Ohio, a key part of the
convoy, was towed into Grand Harbour to deliver the vital fuel on 15 August
1942 to enable Malta to continue functioning as an important Allied base, a
major Allied strategic success.
By winter 1942, in contrast to Operation Torch, 9 December
was a successful day when four SM.79s sank a Flower class corvette and a
merchant ship, with the loss of one aircraft. Carlo Emanuele Buscaglia, another
prominent member of the Italian torpedo-airforce who was credited with over
90,718 tonnes (100,000 tons) of enemy shipping sunk, was shot down the day
after saying "We will probably all be dead before Christmas". The
risks of attempting to overcome the effective defences of allied ships were too
great to expect much chance of long-term survival, but he was later rescued from
the water, badly wounded.
Despite the increased activity in 1942, the results were
considerably poorer than those of the previous year. The efforts made by the
bombers were heavily criticized as being insufficient. Many debated the
possibilities of torpedo manufacturing defects or even sabotage: the first 30
used in 1940 had excellent reliability, but a number of later torpedoes were
found to be defective, especially those made at the Naples factory. During
Operation Harpoon, over 100 torpedoes were launched with only three hitting
their targets.
1943
The year opened with attacks against Allied shipping off
North Africa, but still without much success. In July, the Allies invaded
Sicily with an immense fleet. The Sparvieri were already obsolete and phased
out of service in bomber Wings and its intended successors, the SM.84 and
Z.1007, were a failure, while the latter were not produced in enough numbers.
As a consequence, the latest version of the Sparviero was retained for torpedo
attacks, being considerably faster than its predecessors.
Before the invasion, there was a large force of torpedo
aircraft: 7 Gruppi (groups), 41, 89, 104, 108, 130, 131 and 132nd equipped with
dozens of aircraft, but this was nevertheless an underpowered force. Except
104th, based around the Aegean Sea, the other six Gruppi comprised just 61
aircraft, with only 22 serviceable. Almost all the available machines were sent
to the Raggruppamento Aerosiluranti. But, of the 44 aircraft, only a third were
considered flight-worthy by 9 July 1943.
Production of new SM.79s continued to
fall behind and up to the end of July only 37 SM.79s and 39 SM.84s were
delivered. Despite the use of an improved engine, capable of a maximum speed of
475 km/h (295 mph), these machines were unable to cope with the difficult task
of resisting the invasion. The size of these aircraft was too large to allow
them to evade detection by enemy defences, and the need for large crews
resulted in heavy human losses. In the first five days, SM.79s performed 57
missions at night time only and failed to achieve any results, with the loss of
seven aircraft. Another three aircraft were lost on 16 July 1943 in a
co-ordinated attack with German forces on HMS Indomitable. that was eventually hit
and put out of combat for many months.
SM.79s were not equipped with radar, so the attacks had to
be performed visually, hopefully aided by moonlight, while the Allies had
ship-borne radar and interceptor aircraft. Despite their depleted state, the
Regia Aeronautica attempted a strategic attack on Gibraltar on 19 July with 10
SM.79GAs, but only two managed to reach their target, again without achieving
any result.
The last operation was in September 1943, and resulted in
the damaging of the LST 417, on 7 September 1943. On 8 September, when the
Armistice with Italy was announced, the Regia Aeronautica had no fewer than 61
SM.79s, of which 36 were operational.
Following the Armistice, the SM.79s based in southern Italy
(34 altogether) were used by the Italian Co-Belligerent Air Force as transports
in support of the Allies; those that remained in the North (36) continued to
fight along German forces as part of the Aeronautica Nazionale Repubblicana or
were incorporated into the Luftwaffe. A small number of SM.79s remained in
service in the post-war Aeronautica Militare, where they served as passenger
transports into the early 1950s.
Sorry but this seems to be a little to negative on the Italian Torpedo Bombers
ReplyDelete