Greek shipping company Spring Marine has struck a deal to use fuel additives produced by Constantine Logothetis-backed SulNOx.

SulNOx said its new partner will be able to reduce bunker consumption and emissions through its product by virtually fully combusting what would otherwise be unburnt fuel normally emitted as particulate matter.

Tests by another shipowner on a four-stroke engine showed an average cut in fuel use of 10.5%