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A closed-circuit cooling unit mounted on the vessel′s hull under water, eliminating the need for heat exchanger and raw water system components. Also offers the Boxcooler heat exchanger that needs no raw water pump or strainer.
[R. W. Fernstrum & Company, Menominee, MI, USA]
Raw water monitor and alarm watches for reduction of cooling water flow caused by obstacles.
[Aqualarm, Chula Vista, CA, USA]
Vertical or horizontal silencers with low back pressure for above- or below-waterline installation.
[Soundown Corporation, Salem, MA, USA]
Keel coolers, with a single thru-hull fitting, require no seawater inside the hull, removing the sea strainers, raw water pump, and other headaches.
[The Walter Machine Company, Inc., Jersey City, NJ, USA]
Exhaust hose must bend happily and withstand high temperatures, corrosive liquids, vibration and movement.
[Trident Marine Systems, Canonsburg, USA]
Modular cupro-nickel spiral tubing design available from 4 to 24 tube units. No through-hull fittings needed.
[Duramax Marine LLC, Hiram, OH, USA]
Marine heat exchanger for OEMs and retrofit.
[E. J. Bowman (Birmingham) Ltd., Birmingham, B6 4AP, UK]
Water jacketed exhaust pipes, manifolds, circulation and distribution systems, tailpipe condensers, sea strainers, and other dry and wet exhaust systems and accessories.
[Gil Marine, Berea, OH, USA]
Custom rectangular keel coolers with high surface area and cupro-nickel tubing that serves as an antifoulant.
[Duramax Marine LLC, Hiram, OH, USA]
Here′s the manual for the Mastervolt keel cooling installation for their genset. While specific to this manufacturer, it gives a good idea of what can be involved in a retrofitted non through-hull installation.
[Mastervolt USA, Inc., Thomaston, ME, USA]
We don′t know the exact percentage of engine failures that result from lack of cooling system maintenance, but it is surely at least 50%.
David Pascoe
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