PM or particulate matter is a generic term used to describe a complex group of air pollutants that vary in size and composition depending upon the location and time of their source.  PM equals pollution by particles. PM floats through the air and with every breath we take, we breathe it in.  Although it is in most cases invisible, particulate matter is the air pollution that most commonly affects our health. 


PM produced by yachts and other ocean going vessels are chemical in nature. Their formation is derived from sources that burn fuel and emit gases.  The pollutant, like diesel fuel, vaporizes and then condenses to become a particle of the same chemical compound.


The PM10 and PM2.5 measurements reported by the EPA or Environmental Protection Agency refer to the total weight of the particle. PM10 are particles between 2.5 and 10 microns in diameter (a human hair is about 60 microns in diameter). PM2.5 particles are smaller than 2.5 microns. The smaller the particle, the longer it can remain suspended in the air we breathe and the waters we love.               


The EPA has concluded that marine vessels contribute to the deterioration of air and water quality. A single engine on a cruise or cargo ship is large enough that if it were based on land, it would be considered a major source of polluting emissions and would require mandatory emission controls.     


The clean-exhaust system

  • is formidable in emulsifying toxic particulates
  • makes our air better to breathe
  • facilitates cleaner harbors
  • helps preserve the purity of our oceans
  • is kind to marine life
  • helps us to live with other docked crews in a symbiotic state
  • is labor saving
  • can add years to the life of hull paint


The clean-exhaust Crew has a passion for a healthy lifestyle and for the sea. It is their mission to be part of the marine pollution solution…not part of the problem.