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.