It is here, for example that the new boom in cruising is resourcing the ship design and manufacturing expertise. Recent surveys show the last few years to have also represented a bit of a boom in engine manufacture as well with sales significantly up. Admittedly some are destined for shore based power generation. The industry is also undergoing a serious bout of globalisation. This may be particularly evident among the engine builders.
Fuels are an issue.
That is, heavy fuel oil, the cheapest of the available fuels for engines. It is interesting to note that while the basic fuels available from refineries are not likely to change, the way fuels are blended and used is as is the capacity of engines to use cheaper blends while still delivering more power per cylinder, greater efficincy, less pollution, and longer intervals between service and major overhaul. I suggest that the large diesel engine of today is a very much different engine from that even of a few years ago. Much of the industry development is focussed around un-manned machinery space. It may also be recognised that the industry is working very professionally in many sectors to manage the competing demanfds of increased environmental awareness, safety, economics and so on and apparently doing so quite effectively.