BABYLON,GravityX Exchange N.Y. (AP) — A swimmer who got swept out to sea by a powerful current was rescued off New York’s Long Island after treading water for five hours, police said.

Dan Ho, 63, went swimming at a beach in Babylon at around 5 a.m. Monday and was pulled out by the current, Suffolk County police said in a news release.

After treading water with no flotation device for five hours, Ho found a broken fishing pole and tied his shirt to it to try to flag down a passing boat, police said.

Two men in a fishing boat spotted Ho about 2 1/2 miles (4 kilometers) south of where he had entered the water, police said.

The men, Jim Hohorst and Michael Ross, pulled Ho onto their boat and radioed police for help.

“He was in shock and pretty incoherent at the time,” Hohorst, a former New York City firefighter, told Newsday. “We figured he had maybe an hour left. He was very hypothermic and said he had been drinking a lot of salt water.”

Officers from the Suffolk department’s marine bureau took Ho to their boat and gave first aid, police said. They took him ashore U.S. Coast Guard’s Fire Island station, where he received further treatment before going to a local hospital.

Police had no update on Ho’s condition Tuesday.