The Poseidon Principles for Marine Insurance are a global framework for assessing and disclosing the climate alignment of insurers’ portfolios. They establish a common, global baseline to quantitatively assess and disclose whether insurers’ hull and machinery portfolios are in line with adopted climate goals, including the target of net-zero emissions 2050. Moreover, they recognise the role insurers play in the shipping industry and promote responsible environmental stewardship throughout the maritime value chain.