Saggar atmosphere, or concentrate the effects of salts, metal oxides and other materials on the surface of their ware. Some pots may be carefully prepared for saggar firing. One method creates a smooth surface covered with clay slip, terra sigillata, which responds particularly well to the saggar technique. This slip covering may be burnished to achieve a gloss. Prepared pots are nestled into saggars filled with beds of combustible materials, such as sawdust, less combustible organic materials, salts and metals. These materials ignite or fume during firing, leaving the pot buried in layers of fine ash. Ware produced in filled saggars
Landing craft ("OTB") craft, they allow troops and material to access more than 70 percent of the world's coastline, while only approximately 15 percent of that coastline is available to conventional landing craft. Like the mechanized landing craft, they are usually equipped with mounted machine guns, although they also support grenade launchers and heavy weapons. These vehicles are commonly used in the United States Navy, the Royal Navy, the Russian Navy, and the Hellenic Navy. Landing barges were adaptations of British Thames barges and lighters as landing craft. In size, they came between the landing craft and landing ships. They were used