Two men were rescued from a vessel Tuesday in off-limits waters less than 20 km from the Fukushima No. 1 nuclear power plant, the Japan Coast Guard said.

The coast guard said it rescued the men, aged 40 and 34, after it received a mayday saying the 19-ton boat had been swamped by big waves. The crew had steered the boat, which was used as a floating restaurant, into the no-go zone after it was hit by the waves, according to the coast guard. There were no guests aboard.