AUXILIARY GENERATORS FOR SUPERYACHTS

It is late in the evening, at anchor, well after the last tender has come alongside. Below deck, the auxiliary generator is still running, quietly carrying the load that keeps the yacht comfortable: air conditioning through the night, lighting, the galley on standby for an early start, and navigation and communication systems that never switches off. Nobody on board thinks about where that power comes from, which is exactly the point.

An auxiliary generator set is an independent power source that runs alongside the yacht’s main systems, not in reserve for them. A diesel engine drives an alternator that converts mechanical energy into electrical current, and that current feeds the superyacht’s continuous electrical demands. Unlike a standby set that starts only on failure, an auxiliary set runs under varying load for extended periods, and that duty cycle is what determines the configuration: the number of units, their power range, and how the control system shares load as demand shifts through the day.

Custom built

Many auxiliary generator sets required customization to meet different design criteria. Our engineering department customizes the genset from both internal architecture to external connections and flexible mounts. In early project stage, we work together with the naval architect, shipyard, the owner’s team and integrator to capture needs and requirements. Based on the briefing, we tailor each genset to fit in both new as existing machinery room layouts. With experience built up over the years, we advise on both straightforward and more technically demanding designs.

Our systems

The Zenoro marine generator covers the full auxiliary power range a superyacht needs, from single-unit installations to multi-set configurations on larger builds. The engine, alternator, and control system are matched to the application. The premium sound enclosre unsures further noise level reductions and for optionally integrated Xeamos after treatment.Zenoro fits each generator set with a Xeamos aftertreatment system, choosing DPF-only, SCR-only or a combined DPF/SCR configuration to match the emission legislation.