Sentence:  "Hiram Jefferson and John Moreton to the pumps!" cried the captain. "Mr. Tomlinson, <WSD>clear away</WSD> the long-boat and let us see if we may set her right, though I fear that she is past mending." 
Meaning of the word marked with <WSD> tags:  To prepare some object for use by removing obstacles, untying or unfastening it.