>>1397756This
>>1397588Then
1) Convert all East african rail from metre to cape gauge.
2) build cape to cairo route as the spine. Dual gauge track can be used in egypt.
3) build out to west africa from the spine
4) if economically feasible, dual gauge the cape-cairo route with standard gauge.
In addition,the rapids on the Congo and the Sudd on the Nile would need to be bypassed for shipping to be effective.
The Sudd could be preserved if hovercraft barges were used, otherwise it would have to be bypassed by a canal.
