Royston - specialists in the sale, service and repair of diesel engines, generators and turbochargers for Tugs and Workboats across the globe! Exclusive dealers for GE Marine engines and Niigata spares and official distributors for Volvo Penta, Cummins, Perkins and Scania. We also represent Yamaha, Deutz and Woodward fuel injectors. Royston has developed leading edge technology in the remote monitoring of engine performance, fuel consumption tracking and engine health logging