Industry coalition SEA\LNG and the Society for Gas as a Marine Fuel (SGMF) faced questions about the relevance of their newly commissioned "well-to-wake" study launched last week, which details that using LNG as a marine fuel can cut shipping's greenhouse-gas emissions by up to 21%.

The 168-page report, entitled The Life Cycle GHG Emission Study, was conducted by independent consultancy firm thinkstep and looked at the entire chain from gas production to burning the product in the engine.