Sentence:  White in the deck, black-tarred her hull,  a leviathan of a ship of two hundred tons, stalwart, braced in the bows for ploughing Atlantics, with pigtailed Plymouth men manning her and her captain with the face of Neptune himself, bearded and <WSD>sideboarded</WSD> and a gold-buttoned tunic. 
Meaning of the word marked with <WSD> tags:  Having sideburns.