![Russia\'s aircraft carrier, the Admiral Kuznetsov, was damaged in Murmansk when the dry dock PD-5 where it was undergoing a refit sank on Oct. 30, 2018, sending a giant crane crashing on to the ship. PD-5 is known as one of the world\'s largest floating dry docks. (Photo/Agencies)](http://www.ecns.cn/hd/2018/10/31/d4c17620a1df4e0d8a7f9f7184c52d54.jpg)
Russia's aircraft carrier, the Admiral Kuznetsov, was damaged in Murmansk when the dry dock PD-5 where it was undergoing a refit sank on Oct. 30, 2018, sending a giant crane crashing on to the ship. PD-5 is known as one of the world's largest floating dry docks. (Photo/Agencies)
![Russia\'s aircraft carrier, the Admiral Kuznetsov, was damaged in Murmansk when the dry dock PD-5 where it was undergoing a refit sank on Oct. 30, 2018, sending a giant crane crashing on to the ship. PD-5 is known as one of the world\'s largest floating dry docks. (Photo/Agencies)](http://www.ecns.cn/hd/2018/10/31/4cd4d9f31e41448c897c73902af5f574.jpg)
Russia's aircraft carrier, the Admiral Kuznetsov, was damaged in Murmansk when the dry dock PD-5 where it was undergoing a refit sank on Oct. 30, 2018, sending a giant crane crashing on to the ship. PD-5 is known as one of the world's largest floating dry docks. (Photo/Agencies)
![Russia\'s aircraft carrier, the Admiral Kuznetsov, was damaged in Murmansk when the dry dock PD-5 where it was undergoing a refit sank on Oct. 30, 2018, sending a giant crane crashing on to the ship. PD-5 is known as one of the world\'s largest floating dry docks. (Photo/Agencies)](http://www.ecns.cn/hd/2018/10/31/bc7bac3695a24e66b0e71a008bf6b921.jpg)
Russia's aircraft carrier, the Admiral Kuznetsov, was damaged in Murmansk when the dry dock PD-5 where it was undergoing a refit sank on Oct. 30, 2018, sending a giant crane crashing on to the ship. PD-5 is known as one of the world's largest floating dry docks. (Photo/Agencies)