Sentence:  In his time, the veteran director Mike Newell has tackled a remarkably wide range of film genres. . .  .[H]e was the <WSD>steady hand on the tiller</WSD> of the phenomenal "Four Weddings and a Funeral", a deceptively effortless-looking romantic comedy which, lest we forget, did not direct itself. 
Meaning of the word marked with <WSD> tags:  A person exhibiting such control.