Lagos - An official says 12 sailors are missing after a vessel working on behalf of Chevron sank off the coast of Delta state.
The Jascon 4, a tug boat, went down on Sunday. Sea Trucks Group spokeswoman Corrie van Kessel said Tuesday that divers were searching for missing sailors and an investigation was under way. The Jascon 4 worked for a Sea Trucks subsidiary called West African Ventures.
Working offshore of Nigeria can be dangerous, as sailors face attacks by pirates and militants. Industrial accidents happen as well. A sailor drowned in 2010 after falling overboard from a boat working for French oil firm Total SA.
Chevron, based in San Ramon, California, operates offshore oil sites through a subsidiary in concert with Nigeria's state-run oil company.