Japan's Mitsubishi Heavy Industries has introduced a high-performance propeller that can increase 5% efficiency and save up to $1 million in potential fuel costs per year.
It is reported that this kind of propeller called MAP Mark W is especially suitable for the modification of the boat. To reduce the cost of the initial modification of the MAP Mark W, Mitsubishi Heavy Industries said it would buy back the old propeller.
Mitsubishi Heavy Industries received its first MAP Mark-W order in 2010 for a bulk carrier and then for a pure car carrier. At present, there are 6 sets of MAP Mark-W devices in service, which have achieved the expected performance results.

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