Bhubaneswar, Aug. 25 -- Despite continuous searches by the Indian Navy and Coast Guard, there is no trace of the 22 crew members missing from cargo vessel MV Ocean Winner, two days after it sank in the deep waters of the Bay of Bengal, officials said. The search operation, involving naval aircraft and Coast Guard vessels about 700 km east of Visakhapatnam, has so far found an oil slick near the vessel's last known position and two empty liferafts. Two Chinese crew members, Chen Jianhe and Pan Tonglai, were spotted floating on liferafts by a naval aircraft and rescued by crude oil tanker MT AISOPS. The Panama-flagged vessel, carrying more than 72,000 tonnes of iron ore fines from Paradip port in Odisha to China, sank about 230 nautical miles off the port. "The vessel sank at a location in the Bay of Bengal where the sea is extremely deep," said Coast Guard spokesperson Commandant Amit Uniyal. "Both aerial search by Naval plane as well as surface search operations by Coast Guard ships Varad, Anmol and Vijit are still going on. So far no debris have been found near the spot where the ship likely sank. But it is highly unlikely of any of the 22 crew members surviving." The 225-metre Panamax bulk carrier had departed Paradip on August 20 with 72,100 tonnes of iron ore fines and 24 crew members - 20 Chinese nationals, three Myanmar nationals and one Bangladeshi national. The two survivors, who are undergoing treatment, told rescuers that the vessel developed a heavy list on Friday evening and sank within about eight minutes, forcing the crew to abandon ship....