SWZ|Maritime's April issue dives into alternative energy sources: wind as an auxiliary power source, ammonia as an alternative fuel, batteries and LNG.

With contributions from Marin, the Delft University of Technology, C-Job and Port-Liner, we present you with examples of solutions that can make shipping cheaper, cleaner and more efficient, either now or in the (near) future.

Other contributions to this issue include the second part of an overview article on four stroke medium speed gas engines and an article that presents you with the latest insights into the current status of shipping and shipbuilding across the world.

Read our April issue online now (subscribers only). Not yet a subcriber? Please visit our subscriptions page.

Picture: The Flettner Freighter 8500, a design for a 8500 t cargo ship C-Job Naval Architects designed for Dutch shipping company Switijnk Shipping. Wind assisted propulsion in the form of two Norsepower Rotor Sails saves 14% fuel.