from the air SOE agent Richard Lippett had obtained employment with the shipping company
John Holt & Co (Liverpool), which had business offices on the island. Having taken up the post, he started to make preparations for the raid. He became aware that the crew of ''Duchessa d'Aosta'' were in the habit of accepting invitations to parties ashore and had held their own party aboard ship on 6 January 1942. Under the guise of a party-goer, Lippett managed to gain information about the readiness of the ship for sea, crew numbers, and the watch arrangements. The raiders left
Lagos in their two tugs on the morning of 11 January 1942, and while en route they practised lowering
folbots (folding kayaks) and boarding ships at sea under the command of Captain
Graham Hayes. They approached Santa Isabel harbour and at 23:15 and 23:30 hours on 14 January 1942; both tugs were in position outside the harbour. Onshore, Lippett had arranged for the officers from ''Duchessa d'Aosta
to be invited to a dinner party; 12 Italian officers and two German officers from Likomba'' attended. The boarding parties assembled on the decks of the two tugs as they entered the harbour.
Vulcan, with March-Phillipps and his second in command Appleyard on board, headed for ''Duchessa d'Aosta
. As they approached, a few men could be seen on the after deck of the merchant vessel, but they seemed to take no notice of the tug other than to shine a torch in its direction. At the same time, folbots under the command of Hayes from Nuneaton
, were being paddled towards Likomba
and Bibundi
, which were moored together. Challenged by a watchman on Bibundi'', they persuaded him with their reply that it was the ship's captain coming back on board. The men from the canoes boarded
Bibundi, and the two-man crew on watch jumped overboard. After attaching explosive charges on the anchor chain, the commandos guided
Nuneaton alongside
Likomba to take her and
Bibundi in tow. As soon as they were ready, the charges were detonated, releasing the anchors, and
Nuneaton started to tow
Likomba out of the harbour. Eleven men from
Vulcan had managed to board ''Duchessa d'Aosta
; while one group attached charges on the anchor chains, another searched below-decks, collecting prisoners. Blowing the anchor chains, Vulcan
started to tow Duchessa d'Aosta'' out of the harbour. The explosions had alerted the population of the town, who started to gather on the pier, but no attempts were made to stop the ships from leaving. Several anti-aircraft emplacements opened fire at imagined targets, believing the explosions to have been caused by an aerial attack, but the six-inch guns protecting the harbour from attack from the sea remained silent. From entering the harbour to leaving with the ships under tow, the operation had taken 30 minutes, without any losses to the raiding party. Out at sea on 15 January 1942, March-Phillipps established a routine of watches and placed guards on the 29 prisoners they had taken. During the evening they started to have trouble with the tugs' engines and the tow ropes to the captured vessels. The next day
Vulcan reached the location for the rendezvous and was "captured" at sea by HMS
Violet.
Nuneaton, suffering from engine trouble, managed to contact the Nigerian
collier Ilorin by
semaphore, which in turn contacted Lagos, and a ship was dispatched to tow them into port. ==Aftermath==