Thai Navy officers found more clues about the origin of a 'ghost ship' floating off the coast of Thailand.

The Thai Maritime Enforcement Command Centre said that the ship that was abandoned about 100 nautical miles from Songkhla and sank off the coast of Nakhon Si Thammarat province is called 'Jin Shui Yuan 2' as stated in the deck log book.

The ship records dated May 19, 2016 to August 27, 2016 were retrieved upon officers' inspection of the abandoned ship. A government maritime seal was also found during the check.

Rear Admiral Itthipat Kawin Fuengfukul said: 'The evidence has a seal of the Tianjin City Maritime Security Administration, the People’s Republic of China. It indicates that Qi Xue Jun (Song Xuejun) was the ship’s commander but the document sank with the ship.'

The centre had already coordinated with Ocean Mind, an international Cooperation Network for Fisheries Resources, and made a letter to the Director-General of the Marine Department on relevant laws in solving problems in the fishing sector.

The Koh Samui Regional Port office has also inspected the oil spill following the sinking of the ship and found that the stains floating in the seawater are dead planktons.

Director of the regional port, Koh Samui branch Arun Bupohako said: 'We checked the area around Koh Madsum and Koh Taen after we were informed by residents about the oil stains.

'Officers found no oil stains as reported in the news. Images of the floating green stains shared on social media are dead planktons floating on the surface, it is a natural phenomenon called plankton bloom.'

Chevron’s offshore oil rig workers first found the 80-metre-long vessel in the Gulf of Thailand on January 6. The ship, labelled 'Jin Shui Yuan 2' in Chinese characters, was reportedly of unknown origin, and had no crew, cargo, or identifying documents on board.

It was spotted about a hundred nautical miles from the mouth of Songkhla Lak. However, the ship sank during rough seas and strong winds near Sichon District in Nakhon Si Thammarat province while being towed by the Thai navy on January 9.

Local authorities coordinated with the marine department to keep the one-kilometre-wide oil leak from the shipwreck from harming the environment and spreading to nearby holiday islands. Buoys were also placed to mark the area where the ship had sunk. Fishermen have been alerted to be careful while sailing.

A notice has been issued to the shipowner to salvage the vessel within 15 days.

Captain Itthipat Gavinfuengfukul said that the shipowner, if they come forward, would have to pay to claim the tanker. The Centre for National Marine Interest Region 2 will be investigating the matter further.