Neither Nicholas nor Pryor makes any reference to a diver with an augur so far as I can see, though both quote from earlier sources to the effect that the galley was immobilised by divers who lashed its steering oars together and was subsequently sunk by ramming. Both also refer to other accounts suggesting that the ship may have been scuttled by its captain. That seems to leave only the cryptic 'MF' as presumed (secondary) source for the cabinboy anecdote. What does MF stand for? Presumably Rodger included a key to abbreviations?