Piracy off West Africa's has been a problem for many years, for sometime now reporting has shown a growth in attacks and some comparisons have been drawn with Somali piracy - which now appears to have abated.

There are a number of posts on the West African piracy (WAP) theme on another thread, which will be copied over here soon.

Reuters has a short report today that starts with:
Pirate attacks off Nigeria's coast have jumped by a third this year with ships passing through West Africa's Gulf of Guinea, a major commodities hub, increasingly under threat from gangs wanting to snatch cargoes and crews.

Unlike the dangerous waters off Somalia and the Horn of Africa on the east coast of Africa, through which ships now speed with armed guards on board, many vessels have to anchor to do business off West African countries, with little protection.
Link:http://www.reuters.com/article/2013/...99G16320131017

There is a significant difference IMHO. The West African nation-states may not be very effective at governance, but they know how to make money and how involved are those who are in governance - illustrated by the amount of Nigerian oil that goes AWOL and the drug trade in Guinea-Bissau.