Cartoon strip published in Warships IFR magazine in December 2010.

The depiction is the working of a gun, showing Os with a sponger, used to douse the fragments of burning paper and powder left after the firing of the gun, before the fresh powder and shot are loaded.  Fungus us seen about to load a ball (they seem to have forgotten the powder charge, but will soon realise when the gun doesn’t fire!).

The flintlock shown was fairly new in 1812, having largely replaced slow match.