The U.S. Coast Guard has released a few more details on the sinking of the salmon tender Lone Star in the Igushik River at Bristol Bay.
"The Alaska Department of Fish and Game has conducted an overflight of the site and reports a narrow sheen extending approximately four miles," the Coast Guard says.
The good Samaritan vessel Tradition responded to the report of the sinking vessel, rescued the four Lone Star crewmen and took them to Dillingham.
The Lone Star is partially submerged in 18 feet of water and reportedly has 14,000 gallons of diesel, 250 gallons of gasoline, 150 gallons of lube oil and 150 gallons of hydraulic fluid aboard.
The Coast Guard has issued a broadcast notice to mariners that the overturned vessel is 3.5 miles north of the mouth of the Igushik River, and boats in the area should maintain a sharp lookout to avoid collision.
As for how the Lone Star sank, a crewmember said that while at anchor a change in the tide "swung the ship against the anchor chain, detaching the transducer and coolant lines," the Coast Guard says. "This created a hole in the steel hull and caused the vessel to take on water."
KDLG radio reports the Lone Star was working for Trident Seafoods.