Blockade of Zanzibar

Blockade of Zanzibar
Part of the Scramble for Africa

Portuguese navy in the Zanzibar blockade, 1889
DateNovember 1888 – October 1889
Location
Result Coalition victory
Belligerents
German Empire German Empire
British Empire
Portuguese Empire
Kingdom of Italy Kingdom of Italy
Sultanate of Zanzibar
Commanders and leaders
German Empire Karl August Deinhard
British Empire Edmund Fremantle
Augusto de Castilho
Kingdom of Italy Francesco Preve
Sultan Khalifa bin Said
Strength
25 warships
~4,200 men
Unknown
Casualties and losses
Minimal Minimal

The blockade of Zanzibar (1888–1889) was a joint international operation led by Germany, with the support of the British Empire, Portugal and Italy, against the Sultanate of Zanzibar, with the aim of ending the slave and arms trade off the eastern coast of Africa.

This coalition aimed to coerce Sultan Khalifa bin Said of Zanzibar into rigorously enforcing existing treaties that prohibited the maritime slave trade and the illicit arms trade emanating from his East African dominions. The action followed the 1886 Anglo-German Agreement of 1886, which delineated British and German spheres of influence on the mainland, increasing pressure on the Sultanate.