A machine gun is seen on a sandbag on a boat off the Atlantic coast in Nigeria's Bayelsa state December 19, 2013. Nigeria's navy has installed eight automated, camera-equipped surveillance towers in the waters just off its coast, in an effort to tackle a surge in pirate attacks and crude oil theft that have blighted Africa's top energy producer this year. Pirate attacks off Nigeria have jumped by a third this year as ships passing through West Africa's Gulf of Guinea, a major commodities route, have come under threat from gangs seeking to snatch cargoes or hold crews for ransom. Picture taken December 19, 2013. REUTERS/Stringer (NIGERIA - Tags: MILITARY POLITICS MARITIME)
A machine gun mounted on a lookout boat posted to watch for pirates off the Atlantic coast in Nigeria's Bayelsa state. Reuters

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