
Cargo pumps
Deepwell cargo and booster pumps for liquefied gas carriers and chemical tankers – engineered for efficient, reliable handling of LPG, LEG, CO₂, ammonia, and other demanding cargoes.

Cargo Pump - explainer
From its energy-efficient design to its superior suction capabilities, this pump sets new standards for the safe and efficient handling of liquified gases in the marine segment.
Watch the video below and discover why DESMI is the go-to choice for shipowners and operators looking for an advanced cargo pump that meets their specific requirements.
Built for demanding cargoes and vessel types
Materials:
-
Stainless steel AISI for cargo temperatures down to -165°C
-
AISI 304 or 316L stainless steel for specialized chemical requirements
The DESWELL pumps are available in various sizes and can be
customized to meet the requirements for your ship
Performance specifications:
Capacities: 1200 m³/h / 5283 US gpm
Pressure: up to 250 mLC / 820 ftLC
Temperatures: down to -165°C / -265°F
Vessel types:
- Fully refrigerated LPG carriers
- Semi-refrigerated and fully pressurized gas carriers
- Ammonia (NH₃) carriers and bunker vessels
- LNG bunker vessels
- Ethylene-capable carriers
- CO₂ carriers and onboard carbon capture systems
- Chemical tankers transporting aggressive or temperature-sensitive liquids
Handling difficult applications
Transporting aggressive or cryogenic cargoes such as LPG, LEG, ammonia (NH₃), ethylene, CO₂, and various chemicals requires a pump system built for durability, flexibility, and performance. DESMI NDW cargo pumps are engineered to handle some of the most challenging conditions found on gas carriers, chemical tankers, LNG bunker vessels, and onboard carbon capture offloading systems.
Every material and component in our cargo pump design has been carefully selected to resist corrosion and withstand the thermal and chemical stress of today’s most difficult cargo types. Whether the cargo is cryogenic liquid CO₂ at -50°C, liquefied ethylene at -104°C, or ammonia with its corrosive characteristics, DESMI pumps are ready for the task.
As global trade evolves and new cargoes are introduced, we continuously evaluates compatibility across cargo types and vessel requirements. We support shipowners in determining whether existing pump installations can handle future cargo demands - ensuring both safety and operational flexibility for the long term.
Booster capabilities
DESMI also manufactures booster pumps to be
placed on the deck and to support the DESWELL
pump obtaining a higher total pressure of the
cargo, if required by the gas terminal.
The booster pumps are single-stage centrifugal
pumps available in various sizes according to
requirements.
Technical Specifications:
Capacity: 850 m³/h / 3742 gpm
Pressure: up to 150 mLC / 0 - 459 ftLC
Temperature: down to -165°C / -265°F
