These Regulations amend the Merchant Shipping (Light Dues) Regulations 1997 by increasing the rate per ton at which light dues are payable from 37 and a half pence per ton to 38 and a half pence per ton and by making a corresponding upward adjustment (from £15,000 to £15,400) to the maximum amount for any one voyage by a ship where that voyage ends at a port or place in the United Kingdom on or after 1st April 2021.