Our consideration when HMM decided to make carbon calculator.

The selection of transport modes plays a critical role in determining emission levels for international shipments.

While there are usually two kinds of transport mode rail and truck to transport containers, electric rail among various propulsion rail is a much more carbon-efficient and much more cost effective transport mode.
HMM is trying to use best environment friendly transport mode to benefit while transporting inland.

Depending on shippers` choice after their careful consideration of cargo delivery priority, some shipper may use aviation to make cargoes arrived earlier than other transport mode. It may cause expensive fee and record more Greenhouse Gas emitted.
However as lots of media and studies revealed, ocean transportation is cost effective and environmental-friendly mode among others for long distance delivery.
Even though being affected by market situation whether it allows late delivery for cargoes, utilizing slow steaming make ship more eco-friendly mode.

For all modes of travel, emission levels are strongly dependent on the distance travelled by the transport vehicle. HMM's Carbon Calculator considered precise distances, was verified each distances between points and optimized distances to make cargoes be arrived earlier.

Ocean voyage distances are surveyed by using verified distance programs. But as lots of piracy attack is affecting ship operators` intended shortest distance to travel, some deviation is seriously considered for their best safeness against piracy threat.

Distances travelled by truck was surveyed by using the shortest available route between the two locations. Truck travelling data is available for many countries worldwide and their exactness is verified by internationally recognizable verifier.

The exact data for distance traveled by rail shipments and its fuel consumption data is generally not available for outsider except rail operator. Therefore HMM uses internationally revealed data from well known intermodal carbon calculator.
But after concluding to use such data, applying such data is strictly met within HMM`s standard.

Vessels` energy efficiency is the most significant factor in calculating Greenhouse Gas. HMM has been replacing small size vessel with bigger vessel recently. And by utilizing the most energy efficiency technology onto vessels HMM becomes more energy efficient shipping company.
And to make shippers calculate bulk cargoes beside container, HMM analyzed various type of vessels and defined emission factor according to shipping route and various standard.

HMM`s Carbon Calculator uses a model that considers that different types of fuel used by the engines in various forms of transport vehicles.
Jet fuel, light diesel and heavy diesel are each composed of hydrocarbon molecules with different numbers of carbon atoms.
Each fuel will thus generate a different volume of CO2 for each ton of fuel burned.