"I remembered a story of a white man - a whaleman too - who, falling among cannibals, had been tattooed by them"

Several such tales circulated - two notable in New Zealand, explaining Ishmael's leap?

Online edition of Barnet Burns

http://www.enzb.auckland.ac.nz/document/1844_-_Burns%2C_Barnet._A_Brief_Narrative_of_a_New_Zealand_Chief_%5BHocken_Library_facsim._1970%5D/%5BFront_Matter_and_Introduction%5D/p1?action=null

Online edition of John Rutherford

http://www.gutenberg.org/files/13760/13760-h/13760-h.htm