Energy Efficiency


A fundamental part of Fednav’s efforts to reduce air emissions (see Air Emissions Policy) is achieved through reductions in fuel consumption.

Fednav is accordingly committed to reducing fuel consumption through improved design of its vessels, better operational practices, and implementation of new technologies. Fednav's significant fleet renewal program is the most important step it takes to improving the energy efficiency of its fleet. Fednav works closely with shipyards and engine manufacturers, constantly putting forward technical improvements in order to reduce fuel consumption, thereby ensuring that the energy efficiency of its fleet is continuously improved, per tonne of cargo transported.

Over the last decade, energy efficiency (fuel consumption) of the Fednav fleet has been significantly improved—the daily bunker consumption of a typical 35,000 MT deadweight ocean-going lake vessel [1] has improved from 36 MT/ per day in the early 1980s to just below 29 MT/per day for vessels built in 2000 [2], a reduction of nearly 20%. Fednav expects to further reduce daily bunker consumption on some of its upcoming Lake vessels to about 24 MT/per day (see measures below).

While Fednav's efforts to reduce bunker consumption have been primarily dictated by commercial realities [3], energy conservation and efficiency are part of Fednav's commitment to the continuous improvement of its environmental performance.

Ship operations result in air emissions such as nitrogen oxides (NOx), sulphur oxides (SOx), particulate matters (PM), and carbon dioxide (CO2), which affect local and regional air quality and may contribute to climate change. Improvements in energy efficiency through reduction in fuel consumption translates into proportional reduction of COemissions as well as reductions of SOx, NOx, and PM emissions [4].


Owned vessels

Planned and Preventive Maintenance: The performance of engines is carefully managed through a planned and preventive maintenance program to ensure that vessels are operated at an optimum level.
Hull fouling: Use of anti-fouling hull coating prevents underperformance of the vessel due to marine growth. Fednav has been using environmental friendly anti-fouling paint (i.e., tributyltin-(TBT) free) on all its owned vessels well in advance of the 2008 International Maritime Organization (IMO) mandatory deadline.
Hull cleaning: Whenever hull fouling is discovered, hull cleaning is arranged at the earliest opportunity.
Redesign and technological improvements on new ships:Introduction of additional energy-saving features on new vessels as part of Fednav's efforts to continuously improve energy efficiency per tonne of cargo transported within its fleet.
Ship operations  (applicable to owned and time-chartered vessels): 

Access to weather routing to optimize efficiency of passages which in turn reduces bunker consumption (always subject to the safety of the crew and the vessel).

Speed adjustments to reduce fuel consumption (by reducing the speed of the vessel to arrive at the best opportune time at the next port always subject to the safety of the crew and the vessel).

Instruction given to vessels to optimize cargo lift(trimming and loading conditions) to reduce the amount of ballast (i.e.,energy efficiency by ensuring that vessels carry maximum cargo per tonne of fuel).

Time-chartered vessels

Although several energy efficiency measures result from technological improvements that are beyond the authority of Fednav as a time charterer, reduction of fuel consumption remains a primary objective for the operations of the time-chartered fleet as well. This translates into:

Best efforts to ensure the quality of the time-chartered tonnageusing Fednav's “pre-vetting system” and ongoing Environmental, Quality, and Safety Inspections over the period of the time charter. Quality, well-maintained vessels are more likely to be energy efficient. 

Hull cleaning: Whenever hull fouling is discovered, arrange for hull cleaning at earliest opportunity.

Ship Operations: Fednav applies the same operational measures to time-chartered and owned vessels to reduce fuel consumption including access to weather routing, speed adjustments, and instructions to optimize the cargo lift.

[1] Ocean-going Lakes vessels are bulk carriers built to the specificities of the Great Lakes; i.e., with a restriction on the length and beam to navigate through the Great Lakes St. Lawrence Seaway system.


[2] The daily bunker consumption is for an average speed of 14 knots.

[3] Fuel represents an important percentage of the fleet’s operational costs.

[4] NOx emissions can also be reduced through engine technology solutions which improve the combustion process of ship’s engines or by using exhaust after-treatment such as selective catalytic reductions.