Essential for all vessels who wish to enter an Emission Control Area, at berth in a United Kingdom port, a UK passenger ship operating in UK waters, controlled waters, and any other passenger ship which calls at a port in the UK.

The Merchant Shipping (Prevention of Air Pollution from Ships) Regulation 2008, as amended, require the master of a ship - to which the regulation apply - to make a record to demonstrate compliance for any ship using separate fuel oils and make a record of any fuel changeover operation.

The master of a ship to which the regulations apply is required to make a record:

• In the case of a UK ship, in a log book in the format prescribed in Appendix 6 to Merchant Shipping Notice 1819 (M+F)
• In the case of any other ship, in a ship's log book.