Umbrella
An umbrella in maritime context refers to a type of device that is used to protect a ship from the effects of nuclear, biological, or chemical (NBC) weapons. It is a large, dome-shaped structure that is placed over the ship and is designed to prevent the entry of harmful agents. The umbrella is made of a special material that is resistant to NBC agents and is supported by a framework that is attached to the ship. The umbrella is an important component of a ship's NBC defense system and is used in conjunction with other measures such as air filtration systems and protective clothing.
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