- ISO
- CCS
- ASME
- Pressure Vessel
Custom Marine Box Cooler Manufacturer
JEDHeatExchanger manufactures custom marine box coolers for newbuild and replacement vessels, based on your drawing, existing cooler dimensions or confirmed project requirements.
Send your information for review before quotation.
A Box Cooler Built for Your Vessel
Installed inside the vessel’s sea chest, a marine box cooler—also written as boxcooler—transfers heat from the closed cooling circuit to the surrounding water.
JEDHeatExchanger customizes the unit to fit the available space and required cooling duty without circulating raw seawater through the engine-room cooling equipment.
What We Can Customize for Your Project
Key design details are confirmed according to the vessel installation and operating conditions.
Cooling Duty and Circuits
Configured for the required heat load, coolant, flow rate, operating temperatures and circuit arrangement.
Sea Chest Fit and Mounting
Sized for the available sea chest space, mounting position and installation arrangement.
Tube Bundle and Materials
Tube construction and materials selected for the operating water, corrosion conditions and fouling risk.
Headers and Connections
Connection sizes, flange standards and nozzle positions matched to the vessel’s piping arrangement.
Need to Replace an Existing Box Cooler?
JEDHeatExchanger can evaluate a replacement from an existing drawing, nameplate, photos or available dimensions.
We review the sea chest fit, mounting plate, connections and cooling duty, then confirm any missing details with you before quotation.
Quality Certificates and Inspection Support
Depending on the project, support can include material certificates, dimensional and connection inspection, pressure or leak testing, NDT and third-party inspection when specified.
Built for Marine Engine and Equipment Cooling
- Main and Auxiliary Engines: Cooling for propulsion engines and auxiliary engines operating under continuous or variable loads.
- Generator Sets and Power Systems: Heat rejection for onboard generators and related power equipment.
- Thrusters and Hydraulic Systems: Cooling for bow thrusters, stern thrusters, hydraulic power units and related equipment.
- HVAC and Auxiliary Equipment: Cooling for air-conditioning systems, compressors and other onboard auxiliary equipment.
Need a Custom or Replacement Marine Box Cooler?
Tell us whether you need a box cooler for a newbuild, retrofit or replacement project. Send the information you already have, and we will confirm the remaining details with you before quotation.
JEDHeatExchanger will review the product structure, material, connection, mounting details, and testing requirements before quotation.
Marine Box Cooler FAQ
No. On this page, a box cooler refers to a marine tube-bundle heat exchanger installed inside a vessel’s sea chest. It transfers heat from a closed cooling circuit to the surrounding water.
Stationary operating conditions can be considered, but the required performance depends on the cooling duty, sea chest arrangement, surrounding water circulation and available design margin.
A box cooler should be inspected for biological fouling, corrosion and physical damage. The inspection and cleaning interval depends on the operating water, vessel service and anti-fouling arrangement.
A multi-circuit arrangement can be reviewed when several closed cooling circuits need to reject heat through one sea chest installation. The duty and separation of each circuit must be confirmed before production.
Lead time depends on the cooler size, material availability, circuit arrangement, documentation and inspection requirements. A project-specific schedule is provided after the technical requirements are confirmed.
