31 sailors are missing as a warship carrying over 100 crew members collapsed and drowned in the Gulf of Thailand.
On Sunday night, the HTMS Sukhothai sank after water filled its electrical controls.
Authorities reported on Monday that they had saved 75 crew members, but 31 remained missing in high waves.
A navy official told the BBC, “It’s been more than 12 hours, but we will keep looking.”
The search for survivors continued on Monday with air force support after search teams worked all night.
The navy also revealed that it would look into what caused the accident.
“This has nearly never happened in our force’s history, especially to a ship that is still active
According to officials, the ship sank after absorbing water, which swamped its hull and shut down its power room.
After losing power, the crew struggled to keep the ship from listing before sinking at 23:30 local time Sunday.
Sunday’s storm struck the ship 32km (20 miles) east of Bang Saphan in Prachuap Khiri Khan province.
The Thai Navy’s Twitter feed shows the ship listing and rescue ships searching turbulent waters for survivors.
Three naval ships and helicopters were dispatched to assist, but only the HTMS Kraburi reached the vessel before it sank.
The navy stated the frigate took most of the Sukhothai’s crew. Life-jacketed 31 sailors are missing 31 sailors are missing as a warship was located in water and life rafts. The navy has revealed little about their condition. Local media showed medical staff at the dock removing crew members on stretchers.
Authorities were looking into the incident, according to a statement made public on Monday by Prime Minister Prayut Chan-o-Cha.
About five people had critical injuries, according to the news that I am actively monitoring, he said.
In the middle of the 1980s, the US produced the HTMS Sukhothai for the Thai navy.