Transportation Safety Board has determined that a significant oil spill on B-C’s central coast occurred because the crew member steering a tug and barge near Bella Bella fell asleep while alone on watch. A T-S-B report says the second mate of the Nathan E. Stewart missed a course change and the tug ran aground and sank in shallow water spilling more than 109-thousand litres of diesel fuel and other oils. The report says the crew member had been working a shift that did not allow for sufficient rest and it recommends that watchkeepers be trained to identify and prevent the risks of fatigue, while vessel owners should have fatigue management plans in place. Chief Marilyn Slett of the nearby Heiltsuk First Nation has said the spill fouled prime seafood harvesting and fishing areas, devastating her people socially, culturally and economically.