 Frauenlob shortly thereafter encountered the British cruiser HMS Arethusa and opened fire at 09 : 09 . She quickly found the range and hit the British ship an estimated 25 – 35 times , disabling all but one of her guns and inflicting serious damage . One shell detonated a cordite charge and set Arethusa on fire . The ship 's engine room flooded and her speed fell to 10 kn ( 19 km / h ; 12 mph ) . She turned away to starboard in order to escape from the punishing fire , but Frauenlob kept up with the badly damaged British cruiser until she disappeared in the fog . In return , Frauenlob was hit ten times , but was not seriously damaged ; in all , five men were killed and another thirty @-@ two were wounded . After the engagement ended , Frauenlob took the badly damaged minesweeper T33 under tow and returned her to Heligoland , before proceeding to Wilhelmshaven . 
