Considerable energy was shown in railway construction and by the end of 1918 there were combined railway and steamer routes from the mouth of the Congo to Dar es Salaam and Cape Town.
The depth of water at the main entrance is 41 to 5 fathoms and in the western bay 3 to 4 fathoms. For lack of docks and quayage, large vessels lie off Steamer Point and all cargo is handled by means of lighters, the labour being either Somali or Arab.
The steamer on reaching the given position lowers one, or perhaps two, mark buoys, mooring them by mushroom anchor, chain and rope.
Cuyaba has uninterrupted steamer communication with Montevideo, about 2500 m.
It is the terminus of steamer navigation on the Brahmaputra, and also of a railway running to important coal-mines and petroleum wells, which connects with the Assam-Bengal system.