SI 2019/311 The Merchant Shipping and Other Transport (Environmental Protection) (Amendment) (EU Exit) Regulations 2019 (link)
The provision made by Part 2 of these Regulations is made under section 2(2) of the European Communities Act 1972 in order to update references to Directive 1999/32/EC, which was repealed and replaced (without substantive amendment) by Directive (EU) 2016/802, and update an out-of-date reference to the EEA agreement in the Transport and Works Act 1992.
The remaining Regulations are made in exercise of the powers in section 8 of the European Union (Withdrawal) Act 2018 in order to address failures of retained EU law to operate effectively and other deficiencies (in particular under section 8(2)(a) and 8(2)(g)) arising from the withdrawal of the United Kingdom from the European Union. Part 3 amends primary legislation, Part 4 amends secondary legislation and Part 5 amends retained EU Regulations and Decisions. The amendments are made to legislation governing environmental impact assessments for certain transport purposes and legislation on the sulphur content of marine fuels and prohibited anti-fouling systems.
Source: HMSO.