 Gloire 's wooden hull was modelled on that of a steam ship of the line , reduced to one deck , sheathed in iron plates 4 @.@ 5 inches ( 110 mm ) thick . She was propelled by a steam engine , driving a single screw propeller for a speed of 13 knots ( 24 km / h ) . She was armed with thirty @-@ six 6 @.@ 4 @-@ inch ( 160 mm ) rifled guns . France proceeded to construct 16 ironclad warships , including two more sister ships to Gloire , and the only two @-@ decked broadside ironclads ever built , Magenta and <unk> . 
