An 872-foot container ship that went aground on the Columbia River is floating again today.

The Korean-flagged ship Hanjin Beijing got stuck near St. Helens after leaving Portland at about 3 p.m. Monday. It broke free a few hours later when river and tide conditions changed.

The U.S. Coast Guard said tugs escorted the vessel to Kalama, Wash., where it would be checked for damage before continuing its voyage to Japan.

None of the 15 crew members was injured, and there was no sign of pollution, the Coast Guard said.

Also Monday, a Coast Guard helicopter crew flew an Air Force member to waiting emergency medical crews after he developed a health problem while training off the Oregon Coast.

At about 12:15 p.m. Monday, Air Force members were participating in a water survival exercise about 1.5 miles west of Tillamook Bay when the 27-year-old man became ill. He was transferred first to a life raft then to a nearby 47-foot motor lifeboat from Station Tillamook Bay. A Coast Guard HH-60 Jayhawk helicopter from Air Station Astoria then hoisted him aboard and transferred him to an ambulance at the Tillamook station.

In an unrelated case, the Coast Guard responded to another medical emergency Monday, hoisting a 50-year-old Mexican man from the fishing vessel Karen Jan. The 47-foot boat was 90 miles offshore at 9:29 p.m. when the crew called for the medical evacuation of the man, who was suffering from abdominal pain.

The Coast Guard launched an HH-60 Jayhawk helicopter from Astoria, which brought him back to the air station and transferred him to an ambulance headed for Columbia Memorial Hospital. No other information was available, the Coast Guard said.