"The GUN CAPTAIN commands, sees his gun cleared and cast loose, portlid unbarred ready for tricing up, or half ports taken out; side and train tackles hooked, the side-tackle to the side training-bolt, and the train-tackle to the eye-bolt in the deck in the rear of the gun; casts loose and middles breeching and places selvagee straps and toggles amidships; takes off lock-cover, and hands it to the train-tackleman, who places it amidships; buckles on his waist-belt"