At dawn on 20 September,
Königsberg entered the southern end of the Zanzibar approaches and sailed past the picket ship
Helmuth, firing a few warning shots as she passed.
Helmuth could neither stop the
Königsberg from entering the harbour nor even warn
Pegasus of the German cruiser's approach. Once
Königsberg came within of
Pegasus, she began firing
salvos.
Pegasus sat at anchor in Zanzibar Harbour, preparing steam and at that moment, was helpless. For about 20 minutes while
Königsberg fired,
Pegasus remained stationary.
Pegasus did raise the
White Ensign and began firing, but her shells splashed into the water well short of
Königsberg. The light cruiser slowly continued forward and fired until the range had closed to within . One of the first British sailors wounded was
gunnery officer Lieutenant Richard Turner, who suffered both of his legs being mangled by shrapnel. Despite his injuries, Turner rallied his men, telling them; "
Keep it up, lads, we’re outclassed and done for; but damn them, and keep it up!" The British continued their futile fight for around 20 minutes more, taking additional hits from
Königsberg, the majority landing on
Pegasus' deck. Her ensign was shot away during the fight. Also, because the Germans were always at least beyond the range of
Pegasus guns, no British rounds struck
Königsberg.
Pegasus became holed near her waterline and began taking on water. All hope of defeating the Germans having gone, Ingles
struck his colours and gave the order to abandon ship.
Pegasus later sank. After
Königsberg had finished with
Pegasus, she fired a few parting shots at
Helmuth, whose crew managed to abandon ship before one of the German cruiser's salvos struck the tug. Having achieved a clear victory,
Königsberg turned around and headed back for the Rufiji Delta. ==Aftermath==