A powerful tug typically driven by a pair of Caterpillar 3516B diesels each developing 2500 hp. Propulsion is by two Schottel SRP1215FP ASD rudder propellers for a bollard pull of around 60 tonnes, both ahead and astem. Free running speed is in excess of 12 knots, again, both ahead and
astem.
Ail Cheoy Lee Z-Techs are built to Lloyds Register class with the notation +100A1 Tug, +LMC, UMS.