Depending on the outcome of a review, to be
completed by 2018, as to the availability of compliant
fuel oil, this requirement could be deferred to 1 January
2025. Within ECAs where more stringent controls on
sulphur emissions apply, the sulphur content of fuel
oil must be no more than 1 per cent, falling to 0.1 per
cent (1,000 ppm) from 1 January 2015