SEOUL - South Korea’s coast guard said on Tuesday that it had arrested a Chinese national who tried to enter the country after travelling by jet ski from China – a journey of more than 300km.

Wearing a life vest and helmet, the man crossed the Yellow Sea on a 1800cc jet ski from Shandong province, using binoculars and a compass to navigate and towing five barrels of fuel.

“He refilled the petrol on the ride and dumped the empty barrels into the sea,” the coast guard said in a press release.

When his jet ski got stuck in tidal flats near the International Cruise Terminal in the western port city of Incheon, he called for rescue.

The coast guard said the man, who was not identify, was arrested after he “attempted to smuggle himself into” Incheon.

The authorities said they found no sign that the man was a spy.

The jet ski escapee is Chinese rights activist Kwon Pyong, according to South Korea-based campaigner Lee Dae-seon of non-governmental organisation Dialogue China.

Mr Kwon, 35, had posted pictures on social media mocking Chinese President Xi Jinping and spent time in jail in China for subversion, said Mr Lee.

“While his means of entry into South Korea in violation of the law was wrong, surveillance of the Chinese authorities and political persecution of Kwon since 2016 are behind his life-risking crossing into South Korea,” Mr Lee said.

“He is now weighing whether to apply for refugee status in South Korea or choose a third country.”

South Korea grants only a handful of refugees asylum each year.

The Chinese embassy in Seoul declined to comment when contacted by AFP. AFP