Naval activity occurred all along the coast of German Kamerun in the Bight of Bonny but most of the action took place in the Wouri estuary.

Later, the French armored cruiser Bruix, based in Libreville shelled and severely damaged the coastal towns of Kampo and Kribi further to the south.

On the way to Kamerun's coast, the Cumberland made port in Lagos, Nigeria to allow the exiled King of Duala aboard along with other officials of the tribe who wished to take part in the landings.

[1] On 11 September the 710-ton gunboat HMS Dwarf attempted to enter the rivermouth but was damaged by German artillery fire and retreated.

The Allied commander of the landing force, Major General Charles Dobell, sent an ultimatum to the German garrison at Douala demanding surrender.

[2][6] This battle meant that Germany had effectively no control over the portion of Kamerun to the south of the Spanish colony of Rio Muni The naval operations of the Kamerun campaign resulted in Allied naval domination of the Wouri estuary and Bight of Bonny, as well as the capture of the main port of Douala and much of the colony's coast.

[1] On 26 October, British and French troops traveling by river threatened Edea, a village some German detachments had fallen back to after the capture of Douala.