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
Ogonek class river patrol craft Ogonek class river patrol craft The "Ogonek"-class river patrol craft, also known as Project 12130, is a Russian Coast Guard vessel. The patrol craft is designed to operate in rivers, and perform various missions of the Russian Coast Guard like protecting Russian maritime borders, law enforcement, enforcement of navigation rules, search and rescue, and fisheries protection. These vessels work alongside other classes of Russian Coast Guard vessels, such as the Vosh class and the Piyavka class river patrol vessels. The patrol craft are designed similar to other Russian river patrol vessels. In terms of armament, PSKR-201, 202 are only equipped