R.W. Fernstrum Equipment Showcase
GRIDCOOLER® Keel Cooler – 5000 Series Aluminum
TIG-welded 5000-series aluminium keel cooler designed for unpainted aluminium hulls in fresh or cold seawater — alloy-matched to the hull to prevent galvanic pitting.
Description
The aluminium version of the Fernstrum® GRIDCOOLER® Keel Cooler is built specifically for unpainted aluminium hulls operating in fresh water or cold seawater. It uses a 5000-series marine aluminium alloy that is compatible with the hull plating and resistant to saltwater corrosion, so the cooler and hull do not set up a galvanic couple — preventing pitting and damage from dissimilar metals.
Features
- 5000-series aluminium alloy, TIG-welded construction for durability
- Same closed-circuit keel cooling principle as the copper-nickel GRIDCOOLER: engine coolant is cooled by seawater outside the hull with no raw-water intake
- Eliminates raw-water pumps, strainers, seacocks and seawater piping
- Custom sized to the engine heat rejection, coolant flow and minimum hull speed
- Factory assembled and tested; made in Menominee, Michigan, USA
Typical applications
Aluminium workboats, patrol and pilot boats, landing craft, fast crew boats, fishing vessels and recreational craft operating in fresh or cold-water environments.
For painted steel, fibreglass or wood hulls, and warm seawater service, Fernstrum recommends the 90/10 copper-nickel GRIDCOOLER.
Specifications
| Type | Keel cooler (external, closed-circuit hull cooler) |
|---|---|
| Mounting | Externally on the hull below the waterline: recessed, external (faired) or side mounted |
| Max test pressure | 35 psi (2.41 bar) |
| Manufactured in | Menominee, Michigan, USA |
| Quality | ISO 9001:2015 (ABS QE Certificate 60149); Buy America compliant |
| Material | 5000 series aluminium |
| Construction | TIG welded |
| Hull compatibility | Unpainted aluminium hulls |
| Environment | Fresh water or cold seawater |
Documents
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