Rescuers found a survivor and recovered five bodies from a Thai warship that sank over the weekend in the Gulf of Thailand, navy officials said Tuesday, as hopes faded for two dozen people still missing.
Officials acknowledged there were not enough life jackets for all those aboard.
The HTMS Sukhothai, a corvette in service for 35 years, sank Sunday night in rough seas with 105 people aboard. The navy said an earlier tally of 106 people on board was incorrect because one sailor failed to join the journey.
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Navy commander Adm. Cherngchai Chomcherngpat said initially at a news conference in Bangkok that two people had been rescued on Tuesday, but later said he had received updated information that only one person was alive and that five bodies had been recovered.
According to those figures, 76 people have now been rescued, five have been found dead and 24 are still unaccounted for.
Navy Chief of Staff Adm. Chonlathis Navanugraha said the survivor and the bodies, along with some debris, were found about 60 kilometres from where the ship sank. He said the United States, Britain and Malaysia have offered to help in the search.
The survivor, identified as Chananyu Kansriya, was found floating in the sea at about 3 p.m. and was picked up by a passing cargo ship, Chonlathis said. A navy frigate was bringing him back to shore.
Vice Adm. Pichai Lorchusakul, commander of the 1st Naval Area Command, told reporters that Chananyu was in weak condition and would receive medical treatment on the frigate, which has facilities akin to a mobile hospital.
He was quoted by the Thai Rath newspaper as saying search efforts had been accelerated, but the missing could not be expected to survive in the sea for longer than two days.
Chonlathis was slightly more optimistic. "We still have hope," he said. "Judging from the direction of the water and the wind, it is blowing toward the beach. That is good luck. We continue to search with hope."
The navy has deployed four large ships, two maritime patrol aircraft, two helicopters and a drone, and the air force has contributed one plane and one helicopter. Small boats could not be used because the sea remained extremely choppy, navy officers said.
The search is gradually moving south to take into account the currents, Capt. Kraipich Korawee-Paparwit, commander of one of the rescue ships, told Thai PBS television.
Strong winds and high waves caused seawater to enter the ship on Sunday evening, knocking out its electrical system and making control of the ship virtually impossible. Other naval vessels rushed to the scene, about 32 kilometres offshore, to try to assist the stricken vessel but could not do much because of the poor sea conditions. Because the ship could not be controlled, more water entered, causing it to list and sink.
Thailand's Meteorological Department had issued a weather advisory for the general area just a few hours before the accident, saying that waves in the Gulf of Thailand were expected to be two to four metres high. It suggested that all ships "proceed with caution" and warned small craft not to go to sea until Tuesday.
Survivors interviewed by Thai television said there were not enough life jackets because the ship was carrying guests in addition to its normal crew, which the navy website said was 87 sailors and officers.
Navy Commander Cherngchai said about 30 people from the Marine Corps and Air and Coastal Defense Command were aboard the ship, resulting in the shortage of life jackets. He said 18 people without life jackets had been rescued.
Cherngchai said all aspects of the sinking and the provision of life jackets will be investigated.
Earlier Tuesday, Vice Admiral Pichai was confronted at one of the rescue centres by a woman who said she was the mother of one of the missing sailors.
"My son called me with his friend's phone when the ship started to sink," the woman said in an exchange captured on video.
"He said he did not get a life jacket and only a life buoy. As a parent, when I heard this, my heart was broken. If there were not enough life jackets, how much hope can you give me?"
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