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A type of [[door]] that seals shut to protect against pressure, explosions, projectile weapons, hazardous chemicals, etc. Usually found on [[tank|tanks]], [[ship|ships]], [[spacecraft]], [[mecha]], and other vehicles built to operate in extreme environments. Not to be confused with [[hatching]]. h4.See also * [[manhole]] * [[trap door]] Updated by bot Sun, Sep 18 '22, 02:54 |