DNVs pathways study shows a doubling of present CO2 emissions by 2050 if we do nothing. It further shows that uptake of operational and technical measures combined with biofuels and LNG give a cost effective CO2 reduction potential of 50% in 2050. However, if CO2 emissions from shipping are halved by 2050, the relative share of global emissions contributed by shipping would still be double of what it is today, since other industries improve. Hence, more must be done to stay at par.