sank, causing one of its 70-ton cranes to crash onto the ship's flight deck, leaving behind a hole. One person was reported missing and four were injured as the drydock sank in Kola Bay. The ship was in the process of being removed from the dock when the incident occurred and was towed to a nearby yard after the incident. The cost of repairing the damage was estimated to be RUB 70 million (about US$1 million). The fallen crane was removed by the end of 2018. In late May 2019, repair work of the aircraft carrier was underway. That same month, it was also announced that two graving docks in Murmansk would be merged and enlarged to accommodate the ship, the work taking a year and a half. In December 2019, a major fire broke out on board the ship as work continued on the ship's refit. Two people died and more than a dozen were injured in the fire, and damage to the ship was estimated at US$8 million. In June 2021, Vladimir Korolev, Vice President of the United Shipbuilding Corporation announced that the overhaul and upgrade of Admiral Kuznetsov was expected to be completed by the first half of 2023. The avionics, flight deck with the ski jump, electric equipment, and the power plant are expected to be replaced as part of this process. The carrier would also receive a new fully domestic takeoff and landing control system, with the onboard airpower remaining the same. Due to the lack of a large enough drydock, a new drydock was being constructed in Murmansk. In November 2021 it was reported that "bad weather" had caused significant delays to repair work which might push back the completion of the refit by more than one year. The ship was finally dry-docked on 20 May 2022. By 27 July 2022, the drydock had been drained, allowing repairs on the aircraft carrier to commence. On 15 August 2022, the head of the United Shipbuilding Corporation confirmed that Admiral Kuznetsov would be handed over to the Russian Navy in the first quarter of 2024, and that the ship is expected to remain in service for at least another 25 years. On 22 December 2022, as the ship was being prepared to leave drydock, another fire occurred. The fire was extinguished, and no casualties were reported. On 25 January 2023, it was reported that Admiral Kuznetsov