A 70-year-old Norwegian man made a big splash Friday when he announced his bid to cross the Atlantic — solo on a rowboat.

Spry septuagenarian Stein Hoff plans to row, row, row his boat gently across the pond to England beginning Sunday from Manhattan’s North Cove Marina.

The voyage – fittingly sponsored by “Ripley’s Believe It or Not!” – is expected to cover as many as 3,000 nautical miles, depending on the currents, and take a whopping 90 days on nothing but arm power.

“I live well, eat healthy. Everybody should have a challenge,” he said at the La Marina in upper Manhattan. “People spend too much time at their desk and wasting their lives watching ‘Game of Thrones.’”

Hoff showed off his boat, the Fox II, with which he hopes to recreate the 1896 journey of two Americans – George Harbo and Frank Samuelsen, the first people ever to row across the ocean.

It took the duo, of Norwegian descent, 55 days to make the trip from New York City to England aboard their 18-foot boat, named Fox. Their record stood for 114 years – though it was broken by a crew of four.

Unlike the primitive Fox, the 24-foot Fox II sports the latest in gadgetry, including a GPS system, VHF radio, water-filtration equipment and solar panels.

No one will be trailing the boat, so if Hoff runs into trouble he’ll have to summon help using his satellite phone.

His wife, Diana, prepared all of the vacuum-packed food and provisions to be packed into the boat, including freeze-dried meals, cereal, milk powder, homemade energy bars and (famously indestructible) fruitcakes.

Hoff admitted to feeling a few butterflies.

“This is the biggest challenge I’ve had. I’d be stupid if I didn’t feel some apprehension. I realize it could be risky,” he said.

Noting that others have crossed the Atlantic on a rowboat before, Hoff said he’d be the first Norwegian to do so.

“He’s by far the oldest,” his wife quickly added, laughing.