 SMS Medusa was the seventh member of the ten @-@ ship Gazelle class , built by the Imperial German Navy . She was built by the AG Weser dockyard in Bremen , laid down in early 1900 , launched in December 1900 , and commissioned into the High Seas Fleet in July 1901 . Armed with a main battery of ten 10 @.@ 5 cm ( 4 @.@ 1 in ) guns and two 45 cm ( 18 in ) torpedo tubes , Medusa was capable of a top speed of 21 @.@ 5 knots ( 39 @.@ 8 km / h ; 24 @.@ 7 mph ) . 
