What is the optimal size (he wonders) of a shard of pottery for firing out of a blunderbuss? When the King's guards shot him before his father's house during the Fire, he was knocked down, bruised, cut, but not really penetrated .Probably the larger the better, which makes his job easier – one would like to see great sharp triangles of gaudily-painted porcelain spinning through the air, plunging into pirate-flesh, severing major vessels. But too large and it won't pack into the barrels. He decides to aim for a mean diameter of half an inch, and mauls the plates accordingly, sweeping chunks that are the right size off into small canvas bags, raking bigger ones toward him for more punishment. It is satisfying, and after a while he finds himself singing an old song: the same one he sang with Oldenburg in Broad Arrow Tower. He keeps time with his hammer, and draws out those notes that make the cargo-hold resonate. All round him, water seeps through the cracks between Minerva 's hull-planks (for he is well below the water-line) and trickles down merrily into the bilge, and the four-man pumps take it away with a steady suck-and-hiss that's like the systole and diastole of a beating heart.