Life At Sea In The Merchant Marine Aboard A Cargo Ship

A ballast tank is a compartment within a ship that holds water, which is used as ballast to provide stability for a vessel. Periodically these tank compartments need to be opened up, ventilated, and then entered to be inspected by ship's crew and various regulatory agencies such as Lloyd's Register. Tanks are completely pitch black, very humid, and often lined with mud and salt water when they are inspected. Tanks must be ventilated and then tested for adequate oxygen levels before entering. Anyone entering the tank must have someone on standby outside the tank to assist in an emergency and remain in constant radio communication with.

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