The Wales Act 2017 (Welsh Harbours) (Transitional Provisions and Savings) Regulations 2018

Section 29 of the Wales Act 2017 transfers certain functions, which were exercisable by a Minister of the Crown in relation to Welsh harbours, to the Welsh Ministers with effect from 1st April 2018.

Link: The Wales Act 2017 (Welsh Harbours) (Transitional Provisions and Savings) Regulations 2018
Source: Legislation .gov.uk