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Unloading the ship


Unloading bulk dry cargo is not as easy as loading it. Port workers can use special tools, called grabbers to remove the cargo. A crew at the end of a suction pipe can also remove bulk cargo. It becomes more difficult as the hold becomes empty. At this point, often bobcats or small bulldozers are lowered by a crane into the hold.

They move the last of the cargo to the middle of the hold where it can be removed. The bobcat drivers need to wear special protective clothing and breathing equipment to remain safe. 

Wet bulk carriers like oil tankers are connected to pipes on the wharf or pier through large hoses. The correct valves (taps) along the pipe must be either on or off to make sure the liquid is pumped into the correct storage tank.

As the cargo is unloaded, the ship may need to pump water into its ballast tanks to keep the ship balanced and the propeller just below the water. 

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