The UK has become the first country to include international shipping, along with aviation, in its national carbon budget under domestic climate laws.
The move is part of a pledge by the government to achieve a 78% reduction in carbon emissions by 2035 and net-zero carbon emissions by 2050.
Prime Minister Boris Johnson said: "We want to continue to raise the bar on tackling climate change, and that’s why we’re setting the most ambitious target to cut emissions in the world.
