Marine engineering has come a long way since the paddle, propeller, sail – and now – even the traditional diesel engine, a popular choice to power fleets since the early 1900s. Dwindling natural resources and a constant push to make international shipping more cost effective has driven several sizable advances in marine propulsion technology.
New ideas that are getting increased buy-in and utilization across the globe include alternative fuel designs, dual engine options and even the pursuit of electric marine propulsion technologies.
- Marine Propulsion via Liquefied Natural Gas (LNG)
A popular fuel alternative a few decades ago, peak demand waned for LNG but has since picked back up, especially in the United States and United Kingdom. This resurgence is due to several factors: the belief that the fuel can offer higher financial returns, the continued depletion of other traditional fuels, and fact that LNG is green, putting out substantially less harmful emissions than all other fossil fuels. - The Versatility of Dual Fuel Engines
Fueled by a combination of heavy fuel oil, LNG and marine grade diesel, more and more vessels and rigs are utilizing multiple options for marine propulsion. Operations that previously relied solely on diesel engine-powered ships can now benefit from greater fuel efficiency, tax reductions and other savings associated with incorporating a hybrid approach to their marine propulsion systems. And operationally speaking, having two methods to power a fleet from Point A to Point B is always better than one. - Electric Engines and the Future of Marine Propulsion
If the main criteria for being a suitable propulsion system include being environmentally friendly, being plentiful and being cost effective, then an electrical engine fits the bill. Companies such as Rolls Royce are constructing electric marine propulsion systems that not only fulfill these criteria, but allow large commercial vessels to run lighter and quieter.
Developments in marine propulsion are really picking up steam. Driven by a concern for the environment, forging the future of marine transportation and a drive for increased cost effectiveness, fleet operators as well as other maritime trade and travel professionals are eagerly awaiting the next chapter of this ongoing innovation.
