They also detailed expected costs both for installation and the expected life of the vessel. Selected technologies Cyclonic separation with UV radiation. Alternative secondary treatment would be chemical treatment. Life cycle costs using chemical treatment are higher then similar costs of UV treatment. However, engineering considerations such as limited engine room space and time constraints make the use of UV technology in the tanker vessel unadvisable.
Containership has a much lower ballast water demand than the tanker vessel.
Selected technologies Cyclonic separation with UV radiation, or Filtration with UV radiation. The unit cost on the containership appears higher than the unit cost of treatment on a tanker. The total volume of ballast treated on a containership is significantly less than the volume treated on a tanker, hence the unit cost may make treatment appear more expensive than it is. He suggested a better overall cost measurement would be the change in required freight rate that ship owners must charge to prospective charterers due to the addition of ballast water treatment technologies. B allast Water Treatment Technologies Lessons learned aboard the cruise ship Regal Princess , as presented by Thomas Mackey, Hyde Marine The July issue of CQD Journal for the Maritime Environment Industry will be about the Cruise Ship industry and their unique environmental challenges.