#86 Operation Palimpsest July 19th to 26th 1941
Palimpsest was in many ways not a naval battle, in the traditional sense, as the British and Italian fleets did not directly clash, with the primary Italian force involved being the Regia Aeronautica. It did however involve a very large British force conducting naval operations under pressure with one goal being to shape naval strategy, and there were clashes with the Italian navy as part of it. It’s importance thus makes it a great naval battle…
…The Battle of Malta and Lampedusa left Britain in a precarious position in the Mediterranean. Malta was rendered defenseless and the British Mediterranean fleet was destroyed. The key British position in the Mediterranean was in danger of falling and the British Army in Egypt was exposed to the threat of Naval bombardment.
Fortuitously the Battles of Eigeroya and Malta had temporarily crippled the Kriegsmarine and Regia Marina surface fleets. Neither navy had any modern capital ships capable of going to sea for the moment while the Royal Navy had 2 fast battleships and 4 battlecruisers that could do so, in addition to two modern slow battleships and a number of obsolete capital ships. This provided a window of opportunity to reinforce Malta and to send naval reinforcements to Egypt.
Operation Palimpsest would consist of 4 forces. Force A would consist of the carriers Leviathan, Argus and Hermes, escorted by the battleships Canopus and Majestic, with 9 destroyers and 3 light cruisers as a screen. Leviathan would play defense while between them the other two would carry 32 Hawker Headhunter fighters and 6 Boulton Paul Ballista Fighter-Dive Bombers between them which would be flown off to reinforce Malta. Force B would consist of the BattleshipDuke of York, the battlecruisers Beatty and Sturdee with 1 heavy cruiser, 2 light cruisers, 1 AA cruiser and 6 destroyers, which would bombard Pula and Cagliari before feinting North. Force C would consist of the Battlecruisers Anson and Hood, 2 light cruisers, 2 AA cruisers and 9 destroyers which would move with Force D into the Strait of Sicily and then break north to bombard Marsala before withdrawing. Force D would consist of the battleships Queen Elizabeth and Warspite, the Battlecruiser Renown, the Aircraft Carrier Audacious, one heavy cruiser, 2 AA cruisers, 3 light cruisers, 1 Minelayer and 14 destroyers. Force D would escort a convoy of 20 old merchantmen as far as Malta, where they would be abandoned to be unloaded and then would sprint at 22 knots for Alexandria to serve as a replacement Mediterranean fleet.
The assembled forces departed Britain on July 1st and successfully managed to avoid any encounters with U-Boats or German aircraft. German and Italian intelligence did pick up on the convoy, but it was assumed that the merchantmen and older ships were bound for Egypt via the Cape route, and that the newer ships were simply bound for Gibraltar. It was not until the combined force passed Gibraltar on the 13th that there was any inkling of a major Operation in the Mediterranean. The Italians were caught flat footed their submarines were predominantly in port after a burst of high intensity operations in June and their maritime aviation was undergoing a reorganization after poor performance in the opening battle of Malta and Lampedusa.
The Italians surged their submarines as fast as could be managed and set up constant air patrols, with their operational surface units moving to fortified anchorages for protection. The Italians were somewhat further hampered by the fact that they did not yet have bases set up in Tunisia and that many units were in the process of moving there. As a result they did not catch sight of the British until just before dark on the 18th, too late to do anything about it.
On the 19th they swept the area southwest of Sardinia and at noon, after losing two recon planes to the British CAP, they found the British force. A force of 30 bombers flew out of Sardinia, but took losses against the CAP and was forced by heavy AA to drop their bombs early, losing 6 planes for no hits. That night an Italian submarine attacked the trailing destroyer in the convoy, failing to get a hit but successfully withdrawing and avoiding contact.
On the 20th the Italians launched 3 larger waves of 40 bombers, all level bombers, after spotting the British early in the morning. One of the groups, not trained in maritime strike, made a navigation error and did not notice before it was too late and needed to return to base. The remainder successfully found and attacked the British fleet. Once more disrupted by the CAP and facing heavy AA gunnery, they managed only minimal accuracy, managing a near miss on a destroyer and a light cruiser, with one hit square on the roof of Beatty’s Y turret, doing no damage, alongside two more near misses and splinter damage to another destroyers, in exchange for the loss of 7 planes. On the night of the 20th a second Italian submarine managed to penetrate into the British formation and sank a pair of transports before being depth charged into oblivion by the escorting destroyers.
On the 21st the Italians managed an even larger strike, 150 level bombers and 30 Torpedo bombers. Coordination from multiple bases proved poor and rather than an overwhelming force, they struck in groups of 30. A light cruiser was hit by two bombs, but remained combat capable, a destroyer was hit by one and lost its forward guns, while two freighters were damaged but remained able to make full speed. Later Majestic took a single torpedo hit, square in the thickest part of her torpedo defenses and remained fully combat capable. The strikes however cost the Italians 14 level bombers and 8 torpedo bombers. Two submarines attempted to attack after dark, one managed to torpedo a destroyer and slip away, with her comrade being targeted and heavily damaged before escaping the next day.
Just before midnight on the 21st Force B slipped away and began its journey north. It was spotted first, by a patrol out of Sardinia looking for the main body and triggered multiple attacks by level bombers, first a wave of 30 followed by a wave of 50 and then another of 30. These proved more accurate, as they were only facing heavy AA and not any airpower. However as level bombers, and predominantly not trained in naval strike, accuracy was still poor and seven bomb hits were managed, three on Duke of York, knocking out one secondary turret and destroying her float plane, one on Sturdee doing no damage, two hits on a light cruiser doing minor damage and one hit on a destroyer knocking out its radar and jamming a turret, in exchange for 7 aircraft shot down. The main body was spotted after the third wave was being launched and it was decided to hold back the bombers as not to feed them piecemeal into a working integrated air defense.
Force B hit Pula in early afternoon, bombarding the docks there before advancing to Cagliari, sinking a half a dozen coasters, an old destroyer and a minesweeper. Around that time 30 single engine recon aircraft launched an attack with light bombs, scoring a dozen hits and causing cosmetic damage to the Sturdee and a cruiser, backed by 30 fighters performing strafing runs that killed 70 crew and knocked out several light AA positions, at a cost of a further 12 aircraft. Force B was able to continue with its mission and advanced northeast into the Tyrrhenian Sea as a feint.
Both the main body and Force B avoided encounters with Italian submarines on the night of the 22nd. During the night Force C detached from the main body and advanced on Sicily. Force C became the primary target and 90 level bombers and 30 torpedo bombers launched a coordinated strike in late morning. Two destroyers were lost, two cruisers were damaged by bomb hits and the Hood took a torpedo and several bomb hits but remained combat capable, in exchange for the loss of 9 level and 5 torpedo bombers. In mid afternoon Force C bombarded Marsala at long range and sank a pair of coasters. Shortly thereafter it was attacked by about 100 single engine aircraft, Hood took several more bomb hits and had a fighter crash on her stern, Anson took 3 bomb hits and had a main battery turret jammed and one of the AA cruisers took a single bomb hit but remained combat capable, while almost all ships took some strafing damage for the loss of 10 aircraft. In this chaos a force of 11 MAS boats attempted to attack from the Aegates islands but were spotted by the British destroyers and were driven off with 2 losses.
While the Italians were busy with Force C and hunting for Force B in midafternoon Argus and Hermes were close enough that their Headhunters, modified with temporary extra fuel tanks, could reach Malta on a one way trip. All aircraft managed to successfully take off and in a feat of navigation all 32 arrived at their destination, guided by the six Ballistas with their onboard navigators and advanced navigation systems. With this accomplished Force A turned around for Gibralar.
During the night of the 23rd Forces A&C rendezvoused and Force B turned south to join them the next day. Italian submarines found these forces too fast to target and there were unsuccessful attempts on each of them by Italian submarines. Force D was not as lucky and two merchantmen were sunk by one submarine that escaped, while Renowntook a torpedo hit that reduced her to 24 knots but left her otherwise combat capable from a submarine which did not.
The day of the 24th proved to be complete chaos in Italian command as they were unsure whether to target the modern warships of the main body or the transports of Force D. In a decision that left Sanna distinctly unamused it was decided to split the difference rather than overwhelm one force. 90 level bombers and 15 torpedo bombers attacked the retreating main body while 45 level bombers and 75 single engine aircraft attacked Force D. The situation in the air turned into a farce as 30 of the level bombers missed the main body due to a bad guess about speed and the remainder attacked in uncoordinated waves, leading to a trio of hits on Hermes that would have rendered her unable to launch aircraft, if she was still carrying any for the loss of 9 bombers. The aircraft attacking Force D were disrupted by the fact that one of their assembly points was in range of the fighters that had been delivered to Malta and the level bombers had to scrub their attacks after losing 6 aircraft due to the fighters there. The single engine aircraft did better, sinking two transports, getting a trio of hits on Audacious that failed to penetrate her armor deck and damaging two destroyers at the cost of 11 aircraft.
During the night of the 24th Force D passed Malta and the merchantmen broke off, reaching Valetta harbor at 2:00 in the morning. An additional 3 were lost to MAS boats, as was a single destroyer in exchange for the loss of two of the small boats. 11 of the 20 freighters managed to reach the safety of the harbor, bringing food, ammunition, additional AA guns, mortars, machine guns, fuel and 6 priceless AT guns, with 12 more lost.
A Token attack by 30 level bombers was made on the main body on the 25th, hitting two cruisers and forcing one to slow down to 15 knots for the cost of a single aircraft. An attack on Force D was scrubbed by bad weather and it avoided encountering any submarines on the night of the 25th.
On the 26th Force D was attacked by two waves of 60 level bombers, one from Italy and one from Libya. The Italian attacking force mistook the heavy cruiser Cornwall for a battleship and unloaded on it, scoring 7 bomb hits, disabling her main battery and reducing her speed to 18 knots. The attacking force from Libya, not being trained for maritime strike, attacked late and disjointed, unsuccessfully attacking the destroyers making the southern portion of the screen to the exclusion of the main body. Such was the lack of coordination that most of Force D did not get a chance to use their AA guns with Warspite having had the luck to avoid needing to fire them all operation. Between the two separate attacks the Italians lost a further 8 aircraft. This proved to be the last air attack of Operation Palimpsest and the last actual attack was the sinking of a Force A destroyer by an Italian submarine at 11:00PM that day and the subsequent destruction of the submarine.
In total Britain had lost 4 destroyers and 9 freighters, with 11 more written off at Malta, along with 50 aircraft due to accident and being shot down. In return they had destroyed 8 Italian freighters, a destroyer, a minesweeper, 3 submarines and 4 MAS boats with 113 aircraft shot down, written off or forced to crash-land. Malta had air cover once more and was supplied for a siege and stubborn defense, while there was now a British fleet in the Western Mediterranean. A large number of British ships were damaged, but with the existing damage to the German and Italian heavies this was not an issue that materially effected the balance of power…
…Palimpsest was critical in buoying British morale and demonstrating to the world that Britian was still in the fight and could strike back effectively…
…Palimpsest served to color future impressions of the effectiveness, or lack thereof, of land based airpower against warships…
-Excerpt from 101 Great Naval Battles, American Youth Press, New York 2010