A Royal Thai Navy warship sank in severe weather on Sunday night, leaving 31 of its crew of more than 100 sailors missing in stormy seas in the Gulf of Thailand.<br />'' <br />'' The HTMS Sukhothai sank after water flooded its power controls. On Monday, authorities said, they rescued 75 sailors, but 31 were still missing in rough seas.<br />'' <br />'' Search crews worked through the night to find survivors, with the operation continuing on Monday with air force assistance.<br />'' <br />'' Footage shared by the Thai Navy on Twitter showed crew members wrapped in blankets and receiving treatment after they were rescued. Some were being airlifted to hospital.<br />'' <br />'' The navy also announced an investigation into the cause of the disaster.