An explosion aboard the Trinity Spirit off the coast of Nigeria last year that killed five workers and left two others unaccounted for stands among the deadliest tragedies on an oil ship or platform in recent years. The Trinity Spirit fits a pattern of old tankers put to work storing and extracting oil even while on the brink of mechanical breakdowns. (Oct. 30) (AP video Grace Ekpu)

Deadly explosion off Nigeria points to threat posed by aging oil ships around the world

An explosion aboard the Trinity Spirit off the coast of Nigeria last year that killed five workers and left two others unaccounted for stands among the deadliest tragedies on an oil ship or platform in recent years. The Trinity Spirit fits a pattern of old tankers put to work storing and extracting oil even while on the brink of mechanical breakdowns. (Oct. 30) (AP video Grace Ekpu)