ExxonMobil Marine Fuels (EMMF), a world leading supplier of marine fuels, has warned that alternatives to a pure sulphur cap on fuels need to be investigated, made workable and used, if serious pitfalls are to be avoided. Steve Walker, Global Technical Manager of EMMF, told the recent International Bunker Conference in Rotterdam that, while any move to ensure cleaner air should be welcomed, the current EC proposal for amendment of the Sulphur in Liquid Fuels Directive has yet to look in depth at the real effect it will have on the end-user. Walker explained that, for internationally trading vessels, the current proposal would involve having three grades of fuel – 4.5 per cent sulphur bunker fuel…