Model of a Gun Position on the Afterdeck, Rijkswerf Rotterdam, 1837 demonstration model. gunmodel Model of the aft deck of a paddle steam ship with bomb cannon of 60 pounds on Discount. The loop is 15 cm long and has a 4 mm caliber; An Eleveers screw goes through the grape. The dedilder consists of a wooden frame of two heavy shelves with two slight in between, each with two bullets at the bottom of the ends, which run over the turning clouds; On the front and back the sled runs up to stop the upper off. The upper offspring consists of two cheeks with four stairs, the upper part with a tappan of solid brass; The cross bandage consists of a slanted calf, two axle bodies and a crossbar on which the sole plate rests. The ash bodies have no wheels. For the cheeks, two small wheels have been installed, which run over the rails of the outer shelves, but only when the wheels are raised in the middle of the rear ash and walk over the rails of the middle few shelves. Bugs around the rear ashlij