Which HMS Renown is being discussed as Fisher's flagship?
Short answerThe late-Victorian Renown, not the later battlecruiser.
NotesA viewer checks which HMS Renown served as Fisher's flagship. The vessel is the late-Victorian HMS Renown rather than the later battlecruiser. Fisher's flagship was fast and close to a second-class battleship in fighting power. That combination makes the ship a loose precursor to the battlecruiser idea without confusing two different Renowns.