A ship type now over 55 years old, the parcel tanker is often dedicated to carrying liquid commodities such as methanol, styrene, ethylene glycol and ethylene dichloride, but it can also be used to transport other products, including vegetable oils, animal fats, acids, molasses and lubricating oils. To carry such a wide variety of products the parcel tanker has a large number of independent tanks, most of which are equipped with their own separate pumps and lines so that a substantial number of commodities can be handled at any one time. Because of the potential dangers in this trade, dangerous chemicals that might cause a chemical reaction by mixing are not loaded into adjoining tanks.
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