Sara Francis / U.S. Coast Guard via AP
In a photo provided by the U.S. Coast Guard the unmanned Japanese fishing vessel Ryou-un Maru dirfts northwest in the Gulf of Alaska approximately 164 miles southwest of Baranof Island Wednesday April 4, 2012.
KING-TV reports: The ship is heading in the direction of the southeast Alaska town of Sitka 170 miles to the north, traveling at about one mile per hour, Coast Guard spokesman David Mosley said.
"Our main concern is maritime traffic," he said. "We're trying to minimize any safety concerns, alerting vessels. We don't want any vessels to run into it."