Canada ? Canadian rescuers searched freezing waters for 16 missing people Thursday after a helicopter heading to Atlantic oil fields reported mechanical problems and ditched in the sea off Newfoundland.

Of the 18 people aboard, one man was rescued and one body was recovered. Officials said the others were missing about 30 miles out to sea.

There were no signs of more survivors hours after the 7 a.m. CDT accident, but rescuers were holding out hope since those aboard were believed to be wearing survival suits, which serve as life preservers and retain body warmth in frigid waters.

“We’ll continue to search until there is absolutely no chance that any survivors may be located,” said Maj. Denis McGuire of Halifax’s Rescue Coordination Center.

The survival window is about 24 hours with the suits and water-activated locator beacons, said McGuire. Correcting an earlier statement, McGuire said there had been no signals from the beacons.