Diesel Engine-Driven Self-Priming Pumps: All You Need to Know

Marine pumps, also known as ship pumps and navy pumps, are essential in marine operations. They are crucial in managing fluids on board, from fuel and water to waste and ballast. Selecting and maintaining the right pump is essential to ensure the smooth functioning of a vessel and the safety of its crew. 

In the article, we will discuss the types of impeller pumps in a ship and the factors to consider when selecting the right one. Additionally, there are 5 professional tips for the maintenance of marine pumps

Explore EDDY Pump, a trusted US Navy supplier for 25 years, for our wide range of ship pumps if you are looking to buy highly operational ones.

What are ship pumps and their types?

Ship pumps are mechanical devices used on ships. They transfer liquids, such as water, fuel, and oil between different compartments or tanks. Pumps used in ships play a crucial role in maintaining the stability, safety, and operational efficiency of a ship at sea.

Ships are of various kinds, including passenger ships, tankers, cargo ships, fishing vessels, offshore support vessels, research vessels, naval vessels, tugboats, and yachts. Based on the type of ship and the requirement, the ship pumps are chosen. 

Several types of pumps such as centrifugal pumps, reciprocating pumps, gear pumps, screw pumps, and vane pumps are commonly used in ships. All of these have specific designs and applications, serving different purposes on ships. For instance, tugboats require pumps for firefighting and ballast operations. Hence, they use positive displacement and centrifugal pumps

You can read our blog to know more about the top 5 marine pumps found on ships.

Centrifugal pump cross-section and working
Centrifugal pump cross-section and working

Factors to consider when selecting a ship pump

When selecting marine pumps, there are several factors to consider:

  • Pump type: Different kinds of pumps have differing features, suitability for particular applications, and performance capabilities. Choose the appropriate ship pump type for the specific application. For example, centrifugal pumps are commonly used due to their moderate pressure capabilities and high flow rates. For fuel transfers, positive displacement pumps are utilized because of their constant flow rate.
  • Flow rate: The term refers to the quantity or volume of fluid that passes through a system or a pump per unit of time. It is a highly significant factor since it determines the quantity of fluid that a pump is capable of handling within a given duration.
  • Power source compatibility: Electric pumps are driven by electric motors and are hence dependent on electric power supply. On the other hand, hydraulic pumps are powered by pressurized hydraulic fluid. Ensure that the pump can be powered by the available power sources on the ship.
  • Reliability and maintenance: Consider the reliability and ease of maintenance of the pump. This ensures long-term performance and easy upkeep.

By considering these factors, you can select the most suitable ship pump for your specific requirements.

Motor pumps installed on a ship
Motor pumps installed on a ship

5 tips for maintenance of ship pumps

It is extremely crucial to properly install and maintain pumps in ships. They ensure the reliability, longevity, and optimal performance of navy pumps. Here are 5 tips from the experts:

  • Regular inspection: Conduct routine inspections of ship pumps to identify any signs of damage, leaks, or worn-out components. Check for loose connections, corrosion, or blockages that could affect the pump’s performance.
  • Lubrication: Follow the manufacturer’s guidelines to ensure proper lubrication of pump components. Lubricating moving parts such as bearings and seals helps reduce friction and prevent premature wear.
  • Cleaning: Keep the pump clean to prevent debris or foreign objects from entering the pump system. Regularly remove dirt that can impact the pump’s efficiency.
  • Filter maintenance: Monitor and clean or replace filters as recommended by the manufacturer. Clean filters prevent clogs and maintain optimal flow rates. This ensures the pump operates smoothly.
  • Follow maintenance schedules: Adhere to the maintenance schedules provided by the pump manufacturer. Outline recommended maintenance tasks and intervals. It also helps to prevent potential issues and prolong the lifespan of navy pumps.

These maintenance tips for marine pumps are common for centrifugal pumps, reciprocating pumps, and stripping pumps used in ships. Read another piece on navy pumps on the EDDY Pump website.

Pump used on a drillship
Pump used on a drillship

Why choose EDDY Pump?

EDDY Pump has been a trusted US Navy supplier for 25 years. We, at EDDY Pump, offer innovative products. These pumps are perfect for tackling the toughest dredging, slurry, and abrasive pumping applications.

The heavy-duty ship pumps are designed with patented EDDY Pump technology. It ensures exceptional performance and reliability. Our pumps provide high suction, low wear, and low maintenance.

Key takeaways

Selecting the right ship pump involves considering various factors. These factors include pump type, flow rate, pressure capacity, power source compatibility, and size. Also, regular inspections and maintenance are key steps to keep different types of ship pumps operating smoothly.

For your slurry pump, dredging equipment application in construction, mining, chemical, oil & gas, pulp and paper, sewage treatment, and marine industries, contact EDDY Pump or call us at 619-558-3250.

You can also request a free sales quote from us. Make the right choice and choose from our wide range of high-efficiency marine pumps.

Frequently asked questions about pumps used on ships

1. Which is the most common ship pump?

Centrifugal pumps are the most common ship pumps. They are used extensively due to their versatility, simplicity, and efficiency. They are used for various tasks, including cooling, ballasting, fire fighting, and fuel transfer. These pumps are known for their ability to handle large volumes of liquids and tolerate challenging conditions. Thus, they are among the top 5 marine pumps.


2. How often should navy pumps be inspected and maintained?

The frequency of pump inspection and maintenance varies based on different factors. Some factors are the pump type, its usage, and manufacturer guidelines. However, a general recommendation is to conduct inspections monthly, quarterly, and annually. Preventive maintenance should also be performed during these inspections to ensure optimal performance and longevity of the pump.


3. What are common issues with marine pumps?

Marine pumps may have many common issues. Some are leakage, reduced pump performance, and corrosion. Mechanical failures such as bearing and seal wear are also usual. These issues may result from irregular maintenance, poor installation, misuse, or aging. Regular inspection and maintenance can help detect and resolve these issues early.


4. Can navy pumps be repaired or replaced at sea?

Yes, basic repairs of navy pumps can be performed at sea by the ship’s engineers. However, major repairs or replacements usually require docking and professional servicing. Spare parts of marine pumps are typically carried on board as preparation for minor repairs. Planning and preventative maintenance can help minimize breakdowns during voyages.