After advancing the Innovative Bunker and Idle-time Saving (IBIS) Project for containerships, we launched the IBIS TWO Project to intensify fuel-saving efforts for other vessel types. By focusing on lowering engine loads and standardising vessel operations, we have saved fuel and reduced CO2 emissions.
IBIS TWO Project in Each Division
The following explains our fuel-saving efforts for each type of vessel.
Car Carrier Division
1. Pursuing additional benefits through measures other than slow-steaming operations
We have realised fuel-saving benefits of several percent through various initiatives. For example, we are installing energy-saving fluorescent lighting– cold cathode fluorescent lamps (CCFLs)– to replace the vast numbers of the fluorescent lighting systems that are used in the interiors of car carriers, which resemble multistory carparks. Also, we are applying to vessels’ bottoms a coating that saves energy by lowering friction between the hull and seawater.
2. Changing awareness of fuel-saving efforts through information sharing
Within the Group, we compile a list of each vessel’s fuel consumption and share the list with related employees daily.
Vessels that have consumed more fuel than normal are shown at the top of the list, and the reason for the increase is given. Sharing information in this way daily has encouraged us to check the day-to-day status of vessels in more detail than before and heightened our awareness of fuel-saving efforts.
Dry Bulk Carrier Division
In October 2013, we established the Save Bunker Promotion Team, which changed its name to the Vessel Operation Optimisation Team in April 2015. This team provides comprehensive support to departments promoting fuel saving activities, shares information, and introduces standardised measures.
Our efforts focus on optimum navigation, engine performance, and information distribution. To realise optimum navigation, we are using a variety of tools that includes optimum ship routing (OSR) and encouraging communication among relevant parties. As for information distribution, we are currently establishing places and methods for sharing information.
Since beginning the IBIS TWO Project, members of the Tanker Division’s marine technology and sales departments have worked as a single team to advance fuel-saving efforts.
Respective managers are monitoring the performance of vessels and searching for ways to achieve further improvements, mainly through technological measures. Specifically, having considered the technological impact, we are stepping up slow-steaming operations (operating at 30% of maximum power), implementing laterally a fuel-saving mode for vessels in port, and adding appendages to existing vessels.
Although falling fuel prices mean the need for slowsteaming operations has become less pressing, we will continue pursuing technological initiatives and operational optimisation.
Developing Equipment Needed for ‘Visualisation’
The IBIS Project uses a range of data to ‘visualise’, and thereby further fuel-saving efforts, which previously tended to rely on experience and instinct. Having initially introduced the SIMS monitoring system to containerships to enable ‘visualisation’, we steadily installed this system in car carriers, dry bulk carriers, and other vessel types. It has allowed us to gather increasingly large amounts of diverse data.
Further, we use Vessel Performance Analysis System (VPAS) software to create graphs showing the relationship between speed and fuel consumption for each vessel. Generally, extraneous matter steadily adheres to vessels as they operate, which increases friction between the hull and seawater and reduces fuel efficiency. Using VPAS enables the rapid identification of small changes in vessels’ fuel efficiency and performance. Consequently, we are able to choose the best time to clean vessels’ bottoms and polish propellers. The NYK Group has been using VPAS to analyse vessel performance for 20 years. Moreover, we have upgraded this software so that we can incorporate data acquired through SIMS. This has significantly increased the accuracy of and shortened the time needed for analysis. In addition, onshore operators directing vessel operations can now check details of performance of vessels on seeing such data, a task that previously only navigation officers and engineers could do. Easier performance checking and greater accuracy has enabled us to prepare efficient voyage schedules.
Number of Vessels with SIMS