Italy:
Submarine
Axum fitting out at Monfalcone, 1936; on 12 August 1942, she fired four torpedoes at a British naval formation, all of which hit, critically damaging the cruiser HMS Cairo (later scuttled) and damaging the light cruiser HMS Nigeria and the tanker SS Ohio
The
Axum (commanded by Tenente di Vascello Renato Ferrini) was part of the Axis deployement to contrast the Allied effort to resupply Malta in mid-August 1942 (codenamed Operation Pedestal); among other phases, no less than fifteen Italian submarines and two German U-Boote would be lying in wait.
Departing Cagliari on 11 August 1942 bound for the channel of Skerki Bank, together with four other submarines (all of which, save one, would successfully attack the Allied ships), it reached the area on 0600 h of the next day, and it submerged. After moving towards Cape Blanc in the belief that the convoy would hug the coast as much as possible, at 1840 h the
Axum saw on its starboard side smoke, and also smoke coming from AA fire, and turned towards it, believing that the enemy was there.
Coming up to periscope depth at 1927 h, TV Ferrini was able to spot the enemy formation at about 8'000 m, and assumed parallel course to better observe it. After noticing a change of course of the enemy convoy, he ordered to maneuver to get close and fire torpedoes, standing at 15 m depth and at half ahead.
At 1955 h, at an estimated range of 1300 m from the first column of merchantmen and of 1800 m from the cruiser he could see, all four torpedoes of the fore tubes were fired, after which evasive maneuvers were started at once.
After sixty-three seconds, one detonation was heard, then twenty-seven seconds later other two very close together. Ferrini judged to have hit one ship of the first column and another of the second one, but instead he had hit three ships, and none of his torpedoes had been lost.
The first torpedo had struck HMS
Nigeria (a Crown Colony-class cruiser) at the height of the bridge, killing fifty-two crewman, flooding the engine rooms and jamming the rudder; the damaged cruiser, after disembarking Admiral Borrough, had to make for Gibraltar at 14 knots, escorted by three destroyers. It would be under repair until September 1943.
Two torpedoes had struck the old cruiser HMS
Cairo (a C-class cruiser converted into an anti-aircraft cruiser), killing twenty-four men and removing the aft section of the ship; the stricken cruiser had to be abandoned and finished off by HMS
Derwent with gunfire.
The final torpedo had hit the tanker
Ohio, temporarily immobilizing her and causing a violent fire; in twenty minutes, however, the crew managed to put out the fire, and the gallant ship (it would be subjected to further attacks, but it would be one of the ships that made it to Malta) steamed on at 13 knots.
To top it off, the loss of the two cruisers (one forced to double back, the other doomed) fitted with radio and personnel to coordinate with the CAP meant that Force X would have a much harsher time against subsequent Axis air attacks.