In the beginner's mind there are…
Map of the fibre optic network in Gabon: http://aninf.ga/images/carte-projets/bng2.png
Phase 1 is the part that corresponds with CAB4. And phase 1 starts now: http://gabonreview.com/blog/projet-fibre-optique-backbone-1100-km/
In Libreville the fibre is already available, and this is what will support the LTE network announced three days ago: http://www.gaboneco.com/nouvelles_africaines_33773.html
And a request, please but the Libreville, Gabon, ACE landing station back on your map, it is active.
Map of the fibre optic network in Congo-Brazzaville (page 17): http://www.itu.int/en/ITU-D/Regulatory-Market/Documents/Brazzavile/Session9%20-1%20Luc%20Missidimbazi%20%282%29.pdf
The red part is already live, it’s the part where the cables are suspended from the electricity pylons. The yellow part will have to be dug into the ground as there are no pylons. I thought it was going to happen at the same time at the paving of the road between Mambili-Ouesso, but I haven’t seen any cable work on that stretch yet. Maybe they’ll wait for the tarring to finish in 2016… The blue parts are the regional interconnections that are being developped simultaniously to the CAB.
A little more info on the difference between the SNE and PCN: http://www.arpce.com/fr/grands-dossiers/fibre-optique.html?tmpl=component&print=1
Super helpful, thanks Jon! Will add these to the AfTerFibre map.