Bowman Marine Heat Exchangers.
There are three methods employed for water-cooled marine petrol and diesel engines: direct, heat exchanger and keel cooling. Direct cooling of the cylinders and heads by sea-water is unsatisfactory, because the engine - which was probably originally designed for radiator cooling - will run too cold and the sea-water will eventually ruin the cylinder block and heads.
Bowman Heat Exchangers are high-quality products incorporating both the best materials and the latest technical features.