A document issued by a flag State Administration to an organisation to confirm that a specified fitting, material, appliance or apparatus produced by the organisation will be deemed equivalent to a statutory requirement of the Administration.
For example, under a Letter of Equivalency issued by the MCA to Regs4ships Ltd (www. regs4ships. com), UK ships may, subject to certain provisos, obtain M Notices on-line from that organisation instead of carrying paper M Notices as required by The Merchant Shipping (Safety of Navigation) Regulations 2002. Several other flag State Administrations have issued similar Letters of Equivalency to Regs4ships.
