DING, CLASH, DONG, BANG, BOOM, BOOM, RATTLE, CLASH, BANG, CLINK, BANG, CLATTER, BANG BANG BANG! What on earth is this! This is, or soon will be, the ACHILLES, iron armour-plated ship. Twelve hundred men are working on her now; twelve hundred men working on stages over her sides, over her bows, over her stern, under…