"With the 20-ft seas, his boat is getting pretty well thrown around," said an aircraft crew-woman over the radio.
He had no control, and the boat was "pretty much dead in the water", adrift in high seas.
The Coast Guard contacted the Polar Pioneer, which is an oil drilling vessel used by Royal Dutch Shell off Alaska's north-west coast this summer. The ship and support vessels were nearby as they make their way back to Port Angeles, Washington.
The Polar Pioneer sent a support ship, the Tor Viking, to rescue the sailor.