Design Features

Design features

The GRIDCOOLER® Keel Cooler is sized to meet your engine’s cooling requirements and operating environment. Our team will work with you to recommend features to optimize the functionality of your cooling system. The following examples show a few of the more common configurations. Additional configurations are available upon request.

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One Piece Header Design

Fernstrum has continually evolved the GRIDCOOLER Keel Cooler’s design to improve efficiency and dependability. The rectangular one piece header design has fewer joints for improved durability and provides greater flexibility in custom cooling solutions.

Single- & Multi-Pass Designs

Fernstrum offers a range of single- and multi-pass designs to help optimize your cooling solution. These designs maximize the efficiency of the engine coolant flow, allowing for a more compact solution.

E1 Series

E1 SERIES units place the zinc anodes and drain plugs on the end of the keel cooler reducing the hull projection; a benefit to high-speed craft and fishermen where entanglement of nets and/or lines is a concern.

HD Series

HD SERIES stiffener plates can be added to units providing additional support to prevent tubes from bowing, bending, or vibrating from the impact of heavy seas. These plates do not have additional mounting points. The HD Series is ideally suited for applications where the vessel is operating in heavy pounding seas, strong currents, or the keel cooler is positioned near the bow of the vessel.

L Series

L SERIES support plates are designed to minimize intermediate support bolt hull penetrations. These support plates extend beyond the keel cooler side tubes, providing additional securing options. This feature is especially useful in retrofitting a keel cooler to an existing vessel.

Z Series

Z SERIES flanges relocate the connecting and mating points to the hull’s exterior, eliminating hull penetrations. The typical through-hull nozzle mounting connections are replaced with a flange. Mating flanges are provided in carbon or stainless steel. Additional mounting hardware is also supplied for isolation. This design is ideal for installations where mounting hardware cannot be easily accessed from the interior of the hull, easing installation on double hulled vessels and may eliminate the need for cofferdams. L Series support plates are standard in this configuration.

One Piece Header Design Single- & Multi-Pass Designs E1 Series HD Series L Series Z Series

Additional Customization Features

  • Bending and/or Twisting of Unit
  • Extended Nozzle(s)
  • Mounting Foot Pad(s)
  • Side Venting
  • Support Plates Available on the Top or Bottom of the Unit
  • Vented Stud(s)

Technical Articles

MAWSA Zebra Mussel Report