Detailed design of the Tonbo Hybrid Marine Power (HMP) solar-electric concept vessel has now commenced and Eco Marine Power Co Ltd is now working with a number of development partners in order to finalise the overall specification. The Tonbo design will incorporate the latest solar module, Lithium battery, propulsion and power management technologies in order to reduce fuel costs for operators/owners and reduce the emission of harmful gasses into the environment.

At present a number of different propulsion systems are being studied so that a solution can be found that is not only energy efficient but also kind to the marine environment. High efficiency solar modules will also be used and a unique mounting system for these modules is currently being developed as part of the overall Tonbo concept vessel design project.

tonbo_front_viewBy using an advanced on-board hybrid power control and energy management system the Tonbo will be able to significantly outperform vessels using traditional diesel propulsion systems in terms of energy efficiency and operation costs.

The solar modules on-board Tonbo can be lowered so that the vessel can pass under low bridges or adjusted so that they can take full advantage of the available solar energy. A rapid charging system will enable the installed Lithium batteries to be re-charged quickly when the Tonbo is alongside even for relatively short periods. The batteries will also be charged via the high efficiency solar modules and/or the on-board generator and allow the Tonbo to operate in all-electric mode in some cases, even at night.

For information about the Tonbo please visit the Eco Marine Power website:

About Eco Marine Power Co. Ltd.

Eco Marine Power Co. Ltd is an internationally focused company that develops and promotes innovative eco-friendly power and propulsion systems for use across a variety of boats, ships, ferries, bulk carriers and other vessels. The company has recently launched the 'Aquarius' project which aims to develop a commercial system for utilising wind power and solar energy on ocean going ships and vessels. The company is based in Fukuoka, Japan.


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Hybrid marine power solutions including solar power save fuel, reduce pollution and are cost effective. Eco Marine Power is at the forefront of developing low emission & fuel saving solutions for ships, Our computer systems also provide a control interface between renewable energy & other systems on-board ships.
Eco Marine Power is at the forefront of providing innovative marine renewable energy technologies for shipping that harness the power of the sun & wind. These solutions include Aquarius MRE, EnergySail & Aquarius Marine Solar Power. These reduce fuel consumption, lower noxious gas emissions and deliver cost benefits.
Aquarius Management & Automation System or Aquarius MAS is a cost effective alarm handling, monitoring & data logging platform suitable for a wide range of ships. The system is based upon the reliable KEI 3240 Data Logger and is class approved. Aquarius MAS can also monitor fuel use & calculate vessel emissions.
Our design & consulting services include green ship & eco ship concept designs, renewable energy surveys, renewable energy systems design & consulting support for new ship and retrofit projects. We work with ship owners, ship managers and ship yards to develop the right renewable energy solution for their needs.
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