A keel cooler is, in effect, an outboard heat exchanger attached to the submerged pan of a ship's hull and through which fresh water is circulated by the engine-driven pump. This type of cooler originated in the 1800s when a patent was taken out for a simple copper tube placed over the side of a boat to condense steam. The Author describes the main features of a modern cooler in which correct choice of material is paramount in order to avoid galvanic action between the cooler and the ship's underwater hull; this choice is largely dependent on the nature of the waters in which the vessel is intended to operate. Box coolers, of the type used mainly in Europe, consist of heat transfer plates or tubes mounted in a sea chest on the side of the hull and are well protected from physical damage although requiring frequent cleaning. The most advanced forms of keel cooler are exemplified by the packaged systems manufactured by R. W. Fernstrum and Company, Johnson Rubber Co. and Walter Machine Co. These packaged systems are available in many sizes to suit different engine types and operating conditions and are cheaper than the more conventional channel cooling systems and require far less space. Other advantages of the packaged cooler are described.

  • Supplemental Notes:
    • Holland Shipbuilding, 31 <1982>, p.47 <June> (1 p., 2 phot.)
  • Authors:
    • Zinther, T
  • Publication Date: 1982


  • English

Subject/Index Terms

  • Subject Areas: Marine Transportation;

Filing Info

  • Accession Number: 00684450
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM