A large American tugboat is leaking oil after running aground Monday near the tiny community of Bella Bella on B.C.'s Central Coast.

The 50-metre Sea Voyager was headed to Alaska from Seattle when the accident occurred.

The U.S. tugboat Sea Voyager was carrying about 57,000 litres of diesel fuel when it ran aground near Bella Bella.The U.S. tugboat Sea Voyager was carrying about 57,000 litres of diesel fuel when it ran aground near Bella Bella.
(Ian McAllister/Raincoast Conservation Society)
Canadian Coast Guard spokesman Dan Bate said the tug was carrying about 57,000 litres of diesel fuel.

But Bate said it wasn't known how much had oil leaked into the water.
  
"We don't have firm numbers; we only know how much the ship was carrying. So the challenge, of course, is to estimate how much actually flowed out from that point in time," said Bate.

"I should mention there's significant amount of booming surrounding the vessel."

He said the vessel was carrying "light" diesel fuel, which means that evaporation is the primary means to clean up the spill.

Six people were aboard the Sea Voyager when it went aground, but no one was injured.

Bates said the tug's owner was considering sending a salver tug to help the stricken vessel.