| Measurement of onboard power consumption |
For one year, we measured the power consumption of individual devices on board PCC and containerships. Based on those measurements, we simulated various power-generation arrangements on PCC and learned that we could reduce the ship's total energy consumption 0.5% by using the most ideal arrangement of power-generating and power-consuming devices. |
| Development of a performance monitoring system for ships |
We developed a system called "SIMS" iShip Information Management Systemj that enables real-time monitoring of a vessel's performance (vessel speed, fuel consumption, etc.) on a PC. And we developed both ends of the system to allow monitoring both shipside and shoreside. |
| Onboard testing of a ballast water management system |
We conducted onboard testing of the ballast water management system manufactured by JFE Engineering. We collected all the data required for final approval from G9 and type approval from G8. And finally we were accepted by G9 at MEPC60 in March 2010. Additionally, we received type approval from the Ministry of Land, Infrastructure and Transport (Marine Bureau) on May 26, 2010. |
| Performance evaluation at sea of energy-saving devices (MT-FAST* and bow thruster cover) for vessels |
We evaluated the performance of MT-FAST by using the monitoring system called FUELNAVI (please refer to FUELNAVI). We conducted the tests to prove efficiency during actual sea voyages by two identical vessels, one with the energy-saving devices and one without.
*MT-FAST: This is a pre-swirl stator-type device that is attached to a ship's hull just forward of the propeller to improve the flow of water around the propeller and thus improve the function of the propeller.
|
| Studies in the reduction of wind resistance |
First, we brainstormed ideas for above-water ship forms that might lower a vessel's wind resistance. We then evaluated these ideas with computational fluid dynamics (CFD) and wind-tunnel tests. The results showed that we can reduce the wind-resistance index by 20%, which translates into reduced fuel consumption: 1% for a PCC and 1.7% for a containership. |
| Studies in the performance of the Contra-Rotating Propeller (CRP*) |
We evaluated the performance of the CRP by varying the output rates of the two propellers, and the data we collected should be valuable for further development.
*CRP: A transmission system that drives two propellers rotating in opposite directions. |
| Reduction of cargo-handling time for car carriers [since 2008] |
To reduce loading and unloading times for car carriers, we used cargo-handling simulators to evaluate the layout of the inner slopes on which cars run. We also used the simulators to evaluate the best configuration for cargo-handling gangs. |
| Evaluation of a soot-removing device |
We evaluated the Diesel Particulate Filters (DPF) made by NGK Insulators Ltd. for removing the soot from exhaust gas. We also studied engine room layouts to determine the best places for the device in upcoming onboard tests. |
| Study of fuel cell systems for onboard marine use |
First, we reviewed small-capacity fuel cell systems for onboard testing. In 2009, we decided to install 50 kw fuel cell systems for the feasibility study required in onboard testing. We then created the system diagram and layout, and got advice from ClassNK as we studied how best to handle various regulations. |
| Study of a power plant that can store energy for onboard marine use |
We used simulators to evaluate models of a power plant that can store energy for marine use; we calculated the needed capacity and came up with a list of requirements and problems to be solved. The study also considered how to install such a plant and how to comply with ClassNK regulations. |
| Development of a new control method for CPP |
We developed a new control method for controllable-pitch propellers (CPP) and conducted onboard tests to confirm its performance. |
| Studies in carbon dioxide capture and storage (CCS) equipment for marine use |
In an effort to reduce CO2 emissions from vessels, we evaluated a business model of CCS equipment that was developed on shore. |
| Installation and evaluation of LED lighting fixtures in the cargo holds of car carriers |
LED lighting fixtures were installed in the cargo holds of real vessels, and we evaluated the fixtures' brightness, durability, energy efficiency, and so forth during actual cargo operations. |
| Onboard testing of a solar power generation system |
In 2008, a solar power generation system was installed in two car carriers (Auriga Leader and Equuleus Leader), and for one year we examined the durability of the solar panels and the stability of their electricity-generating capacity. |
| Measurement of vibration and friction during the PCC transport of cars |
We measured ship vibration (angle of pitch, angle of roll, speed of acceleration, and vibration span) and the stiction (static friction) of tires on board. That helped us to evaluate lashing effects and confirm the accuracy of the friction index that we use to calculate the lashing of cars during PCC transport. |