Keel cooling
R.W. Fernstrum & Company
Menominee, Michigan maker of GRIDCOOLER keel coolers since 1945; also builds WEKA Boxcoolers in the US and supplies OMEGA Laser Plates.
Plate heat exchangers & central coolers
4 companies
Gasketed or brazed plate heat exchangers and central cooling systems using sea water to cool the fresh-water circuit.
Filter companies: Plate heat exchangers & central coolers
Fuel gas supply systems
Alfa Laval
Swedish maker of marine fuel supply systems for LNG, methanol and ammonia, gas combustion units and OceanGlide air lubrication.
Box coolers
Blokland Non-Ferro
Family-owned Sliedrecht (NL) maker of box coolers, bottom-type coolers and shell-and-tube oil coolers, plus propulsion components, since 1962.
Box coolers
Kelvion
Herne-based heat exchanger group (ex-GEA Heat Exchangers) with marine box coolers, plate and shell-and-tube HEX and charge air coolers.