Who should pay for shipping's efficiency drive?

With the uncertain availability of alternative zero-emission fuels, energy-saving devices offer fuel savings today - but who picks up their expensive tab? Joshua Minchin of Lloyd's List investigates

Energy-saving devices are in vogue. And for good reason, as they offer fuels savings today in a world where the future of zero-emission fuels looks uncertain to say the least. The problem is, like all things, they cost money and owners are starting to wonder whether the extra investment at the yard is worthwhile.