Advertisement

Chinese farmer turns inventor with homemade 7-metre submarine

‘People should have something to dream about,’ Zhang Shengwu says after his 5-tonne vessel makes its maiden river dive

Reading Time:2 minutes
Why you can trust SCMP
6
Chinese farmer Zhang Shengwu pilots his homemade submarine in a river in Hanshan county, in China’s eastern Anhui province. He built his own “Big Black Fish” -- a homemade submarine that stay underwater for 30 minutes at a time. Photo: AFP
Ling Xinin Ohio

On a quiet river in central China’s Anhui province, villagers in Hanshan county stopped to stare as a sleek black shape sliced through the water with a low mechanical growl.

It was not a military test or an industrial prototype. It was a home-made submarine – designed, built, and piloted by Zhang Shengwu, a 60-year-old farmer with no engineering degree and no blueprint to follow.
Zhang’s boatbuilding has become a viral sensation in China. Photo: Handout
Zhang’s boatbuilding has become a viral sensation in China. Photo: Handout

“I’d watched boats all my life,” Zhang told Dawan News, a government-affiliated outlet, referring to the years he spent managing a tiny riverside dock in his village. “But I always felt something was missing.”

Fascinated by invention since childhood, he had often dreamed of building machines that were beyond the means of his rural life. But it was not until 2014, when a programme on state broadcaster CCTV featured a submarine slipping beneath the waves, that one idea took hold with irresistible force.

The homemade submarine made by Chinese farmer Zhang Shengwu is lowered into a river in Hanshan county on July 2. Photo: AFP
The homemade submarine made by Chinese farmer Zhang Shengwu is lowered into a river in Hanshan county on July 2. Photo: AFP

“I’d seen wooden boats and iron boats,” he said. “But never one that could go underwater.” Within days, he had scraped together 5,000 yuan (US$700), bought steel plates, a battery and an engine – and began building in secret while his wife was away caring for his mother-in-law.

The first prototype emerged two months later. It was 6 metres long (19.6 feet), weighed 2 tonnes and was capable of diving 1 metre deep.
Advertisement
Select Voice
Choose your listening speed
Get through articles 2x faster
1.25x
250 WPM
Slow
Average
Fast
1.25x