cabotage
Cabotage is the law that says only Nigerian flagged ships and Nigerian crew can carry goods between Nigerian ports, to protect local shipping.
In plain English
A Lagos trader flying to Abuja does not need to check whether the pilot is Nigerian or the airline is foreign owned, because the sky between two points inside one country is not treated as a jealously guarded space.
Now put that same trader's cargo on water instead of air, moving from Lagos port to Warri or Port Harcourt, and the story changes completely, because the law suddenly cares very much who owns the ship, who built it, and who is standing on the deck.
That second situation is cabotage, and it exists because coastal and inland waterway trade, moving goods between a country's own ports, is treated as a strategic activity that should stay largely in the hands of citizens and locally registered vessels.
Nigeria's Cabotage Act says vessels used for coastal trade should be built in Nigeria, owned by Nigerians, flagged in Nigeria and crewed by Nigerians, though a licence system allows exceptions when local capacity falls short, which happens often in practice.
The idea is the same one behind a Nigerian bank preferring a Nigerian software vendor for a new system, or a government preferring local contractors for a road, it keeps money and jobs circulating at home instead of leaking abroad every time a ship carries cement from one Nigerian port to another.
Britain has its own version tucked into how it treats domestic shipping and fishing rights, a reminder that even open economies still ring fence certain corridors of trade for their own people.
An oil company needing to move diesel from Lagos to Calabar by sea technically should use a Nigerian owned, Nigerian flagged vessel under cabotage rules, and if none is available, it applies for a waiver, often paying into the Cabotage Vessel Financing Fund meant to help Nigerians eventually buy or build such ships themselves.
Questions people ask
Does cabotage stop foreign ships from entering Nigerian ports at all?
No, foreign ships can still bring cargo into Nigeria from abroad. Cabotage only restricts who can carry goods between two Nigerian ports, that is, purely domestic sea trade.
Why do foreign ships still dominate Nigerian coastal trade despite the law?
Nigeria simply does not yet have enough Nigerian built, Nigerian flagged vessels or trained crew to meet demand, so the government issues waivers to foreign vessels while trying to grow local capacity through funding schemes.
Is cabotage only about shipping, or does it apply elsewhere?
The term started with shipping and still mainly means that, but some countries stretch the idea to aviation and road transport too, always protecting domestic point to point trade from foreign competition.
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