Sentence:  Listen : I say we signed, and there's no <WSD>unsigning</WSD>. / And the voyage is never completed, though some may ask / What creature is this, with the sea through his eyes looking[?] / ... / We signed and there's no <WSD>unsigning</WSD>. / Hell, no, but she rolls / And she rolls us like foam from her flanks, the gay mulatto. 
Meaning of the word marked with <WSD> tags:  To remove one's signature from (something one has signed).