What type of pumps are main cargo pumps on vessels?

Main cargo pumps on vessels are typically centrifugal pumps, and this choice is correct for several reasons. Centrifugal pumps are widely used in maritime applications due to their efficiency in transporting large volumes of liquids at relatively low pressure. They operate by converting kinetic energy from a rotating impeller into hydraulic energy, creating a strong flow of liquid.

This design is particularly advantageous for handling cargo such as fuel oil, ballast water, and other liquids commonly transported by tankers. The ability of centrifugal pumps to maintain a steady flow helps ensure that loading and unloading processes are efficient, reducing the time a vessel spends in port. Additionally, they can handle a wide range of viscosities, making them versatile for various cargo types.

The other types of pumps listed are generally more specialized or suited for different applications. Piston pumps, for example, are positive displacement pumps and are better for high-pressure applications but are not as efficient for bulk liquid transfer in marine settings. Gear pumps also fall under the positive displacement category and are usually utilized for specific tasks that require precise flow control rather than the bulk transfer capabilities needed for main cargo operations. Diaphragm pumps are effective for certain applications involving slurries or corrosive liquids but are less commonly used for large-scale cargo transport due to