The Viking Energy, an oil platform supply ship undergoing a pioneering retrofit to run on ammonia fuel, is now scheduled to begin operations in 2026—two years later than initially planned.

Ammonia, NH 3, is an alkaline gas and so turns damp red litmus paper blue. Ammonium ions (NH 4 +) – found in ammonium compounds such as ammonium chloride, ammonium nitrate and ammonium sulfate ...