Given chat has died down I'll post my first comment to see if this sparks some debate - given the previous posts about hydrogen derived from seawater powering AFC cells with pure water as a bi-product, could this be the future power supply for large ships - eg: cargo / cruise ships (also drinking water with mineral added to 'pure' water (or showers, washing etc without adding minerals)? This 'Hydra ship' is powered by a 5kw AFC fuel cell - [link] This would be an interesting alternative market.