These orders were repeated by the first captain of the gun. It is his duty to see the piece cleared and cast loose, and everything made ready for action. He and the second captain "provide" themselves with waist belts and primers, and the first with some other implements. But the handling of one of these great guns is about as technical as a surgical operation would be, and it would be quite impossible for the uninitiated to understand it, though it is every-day work to the ordinary man-of-war's-man.