Top > CSR > Environmental Preservation > Measures for Preventing Air Pollution

Measures for Preventing Air Pollution

Protecting the Atmospheric Environment -Protecting the Atmospheric Environment-

Receives Awards for Vessel Speed Reduction Program from both the ports of Los Angeles and Long Beach

Kawasaki Kisen Kaisha, Ltd. (“K” Line) is honored to have received recognition from the port authorities of both Long Beach and Los Angeles, for recording high level of compliance throughout 2016 with voluntary speed reduction by“K” Line’s containerships, car carriers and dry bulk carriers in the two ports’ respective programs in order to prevent air pollution and warming by slowing ships within the designated water. Ships participating in the program are asked to comply with speed limit of 12 knots within 40 miles (about 74 kilometers) from each port in order to reduce emissions of exhaust gases containing nitrogen oxide (NOx), sulfur oxide (SOx), particulate matter (PM) as well as CO2 from ships. As a result of this year’s achievement, “K” Line has been honored to receive this award from the Port of Long Beach for 12consecutive years since 2005 and from the Port of Los Angeles for 9consecutive years since 2008 when their awards were commenced respectively. Especially, as to the Long Beach program, there were only two carriers including “K” Line which both recorded more than two hundred calls at the port and more than 90% compliance rate.

(“K” Line meets 99.22 compliance rate, totaling 257 compliant legs.) Los Angeles Port “2016 VESSEL SPEED REDUCTION PROGRAM” (”K” Line meets 100% compliance rate, totaling 61 compliant legs.)

Development of next-generation technology for NOx Tier Ⅲ regulations

Regulation which is to control NOx ( Nitrogen Oxide) discharged from ship becomes gradually severe around the world, so IMO ( International Maritime Organization) is going to tighten regulation significantly about new ships after 2016.
“ K”Line have installed diesel generators which is equipped with SCR to new container ship which have started service since March 2013 in collaboration with JMU and Daihatsu. (※1:SCR)
We have assessed new type of diesel generators for 1.5 year, so we confirmed that these are absolutely available at normal operation.
SCR is a technology which transforms NOx of exhaust gas into N2 gas and water. This exhaust gas is mixed Urea-aqueous beforehand, It joins ammonia hydrolyzed by heat of the exhaust gas and NOx together and converts it to nitrogen gas (N₂) and water (H₂O)
“ K”Line tries operational testing of EGR in collaboration with JMU and Kawasaki heavy industry as well. (※2:EGR)
EGR is technology which is lowering the combustion temperature by reusing a part of the exhaust gas for a combustion air. We can control NOx by lowering combustion temperature.
We will install EGR to DRIVE GREENHIGHWAY which will start service since January 2016.
We are not only clear merely regulation, but also aim at the hull maintenance that is kind to the earth without the air pollution, we plan development and the practical use of the new technology in collaboration with marine engine manufacturer and a shipyard.

※1 SCR System::Selective Catalytic Reduction System

※2 EGR System:Exhaust Gas Recirculation System

Reduction of sailing speed at Ise Bay and Mikawa Bay in Japan

We voluntarily reduce the speed of our car carriers to 12 knots or less when passing in Ise Bay and Mikawa Bay. This enables us to reduce the impact of ship navigation on the surrounding atmospheric environment, both on land and at sea. We also control emission of PM (including soot) while ships are in harbor by eliminating soot from the boiler before entering a port. After entering a port, we make the diesel-powered generator load appropriate to maintain a good combustion state.

Providing shore electricity power to ships at berth

Efforts at Long Beach Port in North America

We have facilities for supplying electricity from land (6,600V/60Hz) to ships berthing at the self-managed container terminal at the Port of Long Beach. The electricity is converted into 440V onboard, making it possible to supply all power to be used by ships at berth. This enables securing diesel-powered generators of ships at berth and reduces exhaust gas to zero, improving the air condition in the surrounding area.

Shore electricity power being supplied to the containership Genoa Bridge

Shore electricity power being
supplied to the containership
Genoa Bridge

Connection box for shore power supply cables installed on the quay

Connection box for shore power
supply cables installed on the quay

Power supply cables dropped from the ship
(to be connected to the connection box)

Efforts at Bergen Port in Norway

Bergen implements the project which aims to reduce air pollution at the harbor by using shore power supply equipment. This project enables the berthing vessels to stop the generators. Two offshore support vessels of K Line Offshore AS (KOAS) of our group company participated in this project. It is expected that this activity will reduce NOx (nitrogen oxides) emission during the stay port by about 113 kg per day.

Anchor Handling Tug Supply (AHTS)

Power supply cable supplied from shore.

Connection box for power cable installed on the ship

"DRIVE GREEN PROJECT" - a state-of-the-art environmentally-friendly flagship

“K” Line has launched “DRIVE GREEN PROJECT” in order to pursue environmental protection and energy savings with the world’s most advanced technologies to be integrated on the 7,500-unit Car Carrier on order with Japan Marine United Corporation as Flag ship of this project.



LNG-Powered Vessel Development Project

"K" Line exerts leadership in protection of the global environment, takes a variety of environmental measures in ship operation, including development of environmentally-friendly technologies and ships. We are now attempting conversion to a ship propulsion method that will enable substantial reductions in greenhouse gases in exhaust and environmentally destructive substances. This involves the development of ships that use as fuel liquefied natural gas (LNG), considered a clean energy source. Although the construction of an onshore infrastructure to supply LNG fuel is an issue, we have nearly completed basic technical studies for the development of ships powered by LNG.

LNG-Powered Vessel Development Projectpdf(2MB)

LNG-Powered Vessel Development Project

LNG-Powered Vessel Development Project

Column Use of Water Emulsion Fuel
Water emulsion fuel and its properties
Water emulsion fuel is a mixture of fuel oil and water that has been agitated to disperse minute water particles within the fuel oil. Water emulsion fuel for diesel engines has been found to result in an approximately 20% reduction of nitrogen oxide (NOx) contained in the exhaust gas. We are undertaking a verification test of equipment for using water emulsion fuel by installing it in ships operated by the "K" Line Group.
Combustion reaction of water emulsion fuel
Combustion reaction of the water emulsion fuel is illustrated on the below.

Use of Water Emulsion Fuel

  • The water particle is contained in an oil particle.
  • When the water emulsion fuel is injected into the engine,the water evaporates before the oil particle is ignited.
  • Evaporation of the water causes the fuel particle to disperse into even smaller particles.
  • The extremely small particles of fuel are highly compustible,so the probabilly of perfect combustion increases.
  • Combustion efficiency is improved,resulting in cleaner exhaust gas.


To read the PDF files, you need Adobe Reader installed on your computer.
If you do not have it, you can get it here.